1) Cavitation occurs due toA) High velocity B) Low Barometric Pressure C) High Pressure D) Low pressureE) None of these

2) The velocity of fluid particle at the centre of the pipe section isA) Maximum B) Minimum C) Average D) R.M.S E) None of these

3) During throttling processA) Internal energy does not change B) Pressure does not changeC) Entropy does not change D) Enthalpy does not change E) None of these

4) In an automobile gear box is fitted betweenA) Engine and clutch B) Clutch and Differential C) Differential and heelsD) Clutch and Wheels E) None of these

5) During an adiabatic process the change in entropy isA) + ve B) –ve C) Zero D) +ve or –ve E) None of these

6) Volume of air at 27°C is 2 cu-m. What will de the volume at 372°CA) 2 cu-m B) 3 cu-m C) 6 cu-m D) 8 cu-m E) None of these

7) Air conditioning meansA) Cooling B) Heating C) Dehumidifying D) All the above E) None of the above

8) Brazing is the process of joiningA) Two ferrous materials B) One ferrous and one non ferrous materialC) Two Non ferrous materials D) Two non-metals E) None of these

9) Second Law of Thermo dynamics defines ……………… A) Heat B) Work C) Enthalpy D) Entropy E) None of the above

10) Acoustic materialsA) Absorb sound B) Reflect sound C) Create sound D) Absorb & create sound E) None of these

11) The basic shaft isA) One which has no upper deviation B) One which has no lower deviationC) One which has least deviation on both upper and lower sideD) Does not exits E) None of these

12) The standard angle between the V belt isA) 20° B) 30° C) 45° D) 40° E) None of the above

13) The purpose of annealingA) Induce Hardening B) Induce stress C) Harden the surface D) Remove Stress E) Noneof these

14) The tool signature comprisesA) 5 elements B) 6 elements C) 7 elements D) 8 elements E) None of these

15) A shim isA) A treatment given to a surface to prevent rusting B) A dull corner on a shaftC) A thin piece of sheet metal used between mating parts to provide the proper distance D) A surfaceon which bearings are fitted E) None of these

16) Spot facing isA) Localized machining of a component B) Machining of a spot to fit other artsC) Machining of spot on the surface of a part to furnish a flat bearing or the head of a bolt or nut D) Aspot prepared on shaper or milling machineE) None of these

17) Quill isA) A tool used in milling machine to cut T-slots B) A holding device used on planers C) Cutting a blindkey way on an object D) A steel tube in the head of some machine tools that encloses the bearingsand rotating spindle on which are mounted the cutting tools E) None of these

18) Which of the following materials will have highest value of contraction allowance?A) Cast iron B) Aluminium C) Brass D) Malleable iron E) None of these

19) In hot blast cupolaA) Temperature is high B) Melting rate is high C) Carbon % in castings is highD) Air supplied is preheated E) None of these

20) Which one of the following is used for Thermocouple junctions?A) Elinvar B) Manganin C) Nichrome D) Muntz metal E) None of these

21) In a sine bar the standard length is measured fromA) Edge to edge B) Between inner circumferences of two buttons C) Between outer circumferences oftwo buttons D) Between the centers of two buttonsE) Any of the above.

22) The surface roughness on a drawing is represented byA) Circle B) Square C) Zigzag lines D) Triangle E) none of these

23) A sine bar is used to measureA) Surface roughness B) Gear Profiles C) Internal tapers D) External tapersE) Any of these

24) M 10 screws have a pitch ofA) 0.5 mm B) 1.25mm C) 1.5mm D) 10mm E) None of these

25) A diffuserA) Converts kinetic energy into thermal energy B) Converts potential energy into kinetic energy C)Converts pressure energy into kinetic energyD) Converts thermal energy into kinetic energy E) None of these

26) A substance above critical temperature exists asA) Solid B) Liquid C) Dry vapour D) Wet vapour E) Gas

27) Working medium for closed cycle gas turbine should haveA) High molecular weight B) Low specific volume C) Higher adiabatic indexD) Lower specific speed E) None of the above

28) In a cupola the raw material isA) Pig iron and iron scrap B) Iron ore C) Cast steel D) Steel ingots E) Steel billets

29) Surging isA) An unsteady, periodic and reversal of flow in the compressor. B) The fixed mass flow rateregardless of pressure ratio C) The reduction in lift force at higher angles of incidence D) None of theseE) All the above

30) Ice is slippery when a man walks on it forA) Its surface is smooth B) There is no friction C) It is very chill D) Increase of pressure causes it tomelt E) It has lubricating capacity

31) In case of black body A) =0, =0, =1 B) =0, =1, =1 C) =0, =1, =0 D) =1, =1, =0 E) =1, =0, =0

32) A hot wire anemometer is used to measure Pressure of gases.

33) The operation of cutting multiple holes is calledA) Trimming B) Notching C) Perforating D) Lancing E) None of the above

34) A twist drill is specified byA) The size of hole it can drill B) A number specifying whole size C) A letter of alphabet D) Any ofthe above E) None of the above

35) Dry bulb temperature depends onA) Humidity of air B) Water vapour content of air C) Condition of airD) All above E) None of the above

36) The potential energy stored up in a deformed body is known asA) Strain energy B) Potential energy C) Resilience D) Deformation energyE) None of the above

37) Idler pulley is used forA) Maintaining belt tension B) Changing direction of rotation C) For stopping motion frequently D)For running during idling periods only E) None of the above

38) Continuous chips may be formed while machiningA) Brittle material B) Hard material C) Tough material D) Ductile materialE) None of the above

39) The output of blast furnaceA) Cast steel B) Mild steel C) Pig iron D) Cast iron E) None of the above

40) An ordinary mercury thermometer can be used for temperature aboutA) 100°C B) 200°C C) 400°C D) 500°C E) None of the above

41. A stone initially at rest is dropped from the edge of a very tall building. Taking acceleration as10m/s2, what was the change in the speed of the stone during the 4th second?a. 10m/s b. 30m/s c. 15m/s d. 40m/s e. None of the above

42. Which of the following methods in welding uses a pool of molten metal?a. Carbon arc welding b. TIG welding c. Submerged arc welding d. MIG weldinge. Thermit welding

43. Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through itsvertex and parallel to the base is __________ than that passing through its C.G. and parallel to the base.a. Nine times b. six times c. four times d. one-half e. one-third

44. A hydrometer is used to measurea. velocity of fluids b. velocity of gases c. flow of fluids d. specific gravity of fluidse. none of these

45. A taper provided on the pattern for its easy and clean withdrawal from the mould is known as A.machining allowance B. draft allowance c. shrinkage allowance d. distortion allowance e. None of theabove

46. How many of the following statements may be false?1. Weight is a scalar quantity. 2. Parallelogram law of forces is applicable for finding the resultant of allkinds of forces. 3. Law of conservation of momentum is developed from Newton’s third law. 4. The unitof impulse is Newton/second. 5. The frictional force depends on shape and area of contact of the bodies.a. One only b. Two only c. Three only d. Four only e. All of the above

47. The standard dimensions of the drawing sheet A2 isa. 594x420 mm b. 420x297 mm c. 841x594 mm d. 297x210 mm e. None of the above

48. ISO stands for International Standards Organisation.

49. The branch of science that deals with study of body in motion, considering the forces that causes themotion is known asa. Dynamics b. Statics c. Kinematics d. Kinetics e. None of these

50. Second law of thermodynamics definea. internal energy b. entropy c. enthalpy d. temperature e. none

51. Which mechanical property a metal should possess to enable it to be mechanically formed?a. ductility b. malleability c. elasticity e. machinability e. None of the above

52. The pH value of water isa. 3 b. 5 c. 7 d.9 e.None.

53. Which of the following refers to investment casting?a. lost wax method b. accuracy casting c. centrifugal casting d. both (a) and (b)e. both (a) and (c)

54. The angle of projection shown in the figures A and B respectively are

A) B)

a. First angle and third angle b. Third angle and first angle c. Third angle and fourth angled. Fourth angle and third angle e. None of the above

55. The ratio of volumes of a sphere and a cone isa. 4r/h b. 4r/3h c. 2r/h d. 3 e. None

56. In green-sand moulding, uniform ramming leads toa. less change of gas porosity b. uniform flow of molten metal into the mould cavityc. greater dimensional stability of the casting d. less sand expansion type of casting defectse. None of the above

57. Which one of the following processes in welding uses non-consumable electrodes?a. TIG welding b. MIG welding c. Manual arc welding d. Submerged arc weldinge. None of the above

58. The properties of LASER are high coherence, unidirectional, Monochromatic, Long distancepropagation

59. The unit of moment of inertia isa. Kg/m2 b. Kg-m2 c. Kg/m d. Kg-m e. None

60. Disposable patterns are made ofa. wood b. rubber c. metal d. polystyrene e. all the above

61. Ball bearing material?a. chromium b. high carbon steel c. medium carbon steel d. low carbon steel

62. Necking? a. drill a hole in a plate b. groove is a cylinder c. initially making a spot to join the metald. drill with rivet

63. Size of lathe specified bya. Gross wt b. chuck dia c. swing d. speed of chuck

64. Power transmitted from lead screw to carriage througha. half nut b. rack and pinion c. gear box d. pulley

65. Left hand tool of lathe - ? Ans: Feed from Head stock to tail stock

66. Using HSS tool in lathe, max speed will be given ina. cast iron b. mild steel c. aluminium

67. In which operation in lathe, cutting speed will be minimum fora. parting off b. taper turning c. finishing d. thread cutting

68. Gratings are used in connection witha. linear displacement measurement b. surface texture measurement

c. angular measurement

69. At what position, strain will increase, when stress is constanta. upper yield point b. lower yield point c. proportional limit d. elastic limit

70. shape of bending moment, it shows when we applied no external load,a. linear b. curve d. parabolic

71. Relationship between E, k, G? Ans: E= 9KG / (3K+G)

72. Mechanism used in petrol engine?a. slider mechanism b. crank mechanism c. slider crank mechanism

73. 18/8 steel containsa. 18% Ni ,8% Cr b. 18% Cr ,8% Ni c. 18% Vd ,8% Ni d. none of these

74. Sulphur is removed from cast-iron when same is melt in cupola the flux is --?

75. Plaster pattern & cores are made up ofa. plaster of paris b. cement c. white powder

76. Pilot tube is used to measure velocity.

77. Darry weisbach formula usage? Ans: Hf = (4f l v 2)/ (2 g d)

78. Velocity distribution for laminar flow in circular pipe? Ans: Parabolic

79. If resultant, R=0, bodya. rotate with uniform accl. b. Rotate with uniform disp. c. Does not rotate d. Rotate

80. Shock load measures energy.

81. Carbon steel is an alloy of iron and carbon with varying quantities of ………..?Phosphorous & sulphur

82. Varigon’s theorem - Algebraic sum of moments of a given set of forces about a point is equal to themoment of their resultant.

83. Compound mechanism is with more than a. 2 links b. 3 links c. 1 link

84. Type of governor used in record player for adjusting the turn table isa. hartung governor b. Pickering governor c. proell governor d. porter governor

85. Pantograph, all pairs are a. sliding b. turning c. spherical d. self closed pair

86. Belt drive isa. positive b. not positive c. for small torque only d. power transmission for parallel axis only

87. Quasi static process, definition

88. Total energy line represents?

89. If mass/energy transfer is zero, then what system? Ans: Isolated system

90. Which cycle is less efficient?

91. What chuck is used for brass castings? a. 4 jaw b. 3 jaw c. collet d. magnetic

92. Which is most important for measuring instrument?a. precision b. sensitiveness c. accuracy d. repeatability

93. Purpose of tolerance a. for perfect fit b. can’t machine exact size c. allowance.

94. According to Boyle’s law for a perfect gasa.T2/T1=P2/P1,if V is kept constant b.T2/T1=V2/V1,if P is kept constantBoth (a) and (b) above. P2/P1=V1/V2, if T is kept constant PV/T constant

95. Absolute Zero pressure will occura. At sea level b. At the centre of the earth c. When molecular momentum of the system become zerod. Under vaccum condition e. At a temperature of -273 degree k

96. Boyle’s law i.e. PV=constant is applicable to gases undera. All ranges of pressure b. Only small range of pressure c. High range of pressure d. Steady change ofpressure e. Atmospheric conditions

97. The Internal energy of a system is a function of onlya. Pressure b. Temperature (absolute) c. Volume d. Pressure and temperature e. Pressure andtemperature and volume

98. Pick up the wrong statementa. 2-stroke engine can be run in any direction b. In 4-stroke engine a power stroke is obtained in 4-strokes c. Thermal efficiency of 4-stroke engine is more due to positive scavenging d. Petrol enginesworks on otto cycle e. Petrol engines occupy more space than diesel engines for same power output

99. Diesel fuel, compare to petrol isa. Less difficult to ignite b. Just about the same to ignite c. More difficult to ignited. Highly ignitable e. None of the above

100. The function of a condenser in thermal power plant is to condense steam into condensate to bereused again

101. In diesel engine, the compression ratio in comparison to expansion ratio isa. Same b. Less c. More d. Variable e. More / Less depending on engine capacity

102. Flash point of fuel is Minimum temperature to which oil is heated in order to give offinflammable vapours in sufficient quantity to ignite momentarily when brought in contact with aflame

103. The function of piston rod in IC engine is toa. Transfer motion from piston to cross headb. Transfer motion from piston to connecting rodc. Provide reciprocating motion to slide valved. Convert reciprocating motion of piston to rotary motione. To control cut off point

104. Electroplating requires? (1) AC 2) DC 3) high frequency ac

105. Carnot cycle has max efficiency for reversible engine

106. Fuel-air ratio in a petrol engine fitted with suction carburetor, operating with dirty air filter ascompared to clean filter will be? Higher

107. In S.I engines, air fuel ratio for idling speed is?

108. Helical gears are used for noise reduction.

109. Hardest cutting tool material is tungsten carbide.

110. for uniform strength of beam condition req.a. Depth constant, width increases. b. Depth increases, width decreases.c. Both should be increases. d. All the above. e. None of the above

111. Phenomenon of chocking in compressor meansa. No flow of air b. Fixed mass flow rate regardless of pressure ratio c. Reducing mass flow rate withincrease in pressure ratio d. Increased inclination of chord with air stream e. Does not occur

112. A jet engine works on the principle of conservation ofa. Mass b. Energy c. Flor d. Linear momentum e. Angular momentum

113. The domestic refrigerator uses following type of compressora. Centrifugal b. Axial c. Miniature sealed unit d. Piston type of reciprocating e. None of the above

114. Ammonia is Toxic and non-inflammable

115. If operating temperature of system is low, then refrigerant with low boiling point should be used

116. Poise to the unit of Viscosity

117. A bucket of water is hanging from a spring balance. An iron piece is suspended intowater without touching sides of bucket from another support .The spring balance reading willa. Increase b. Decrease c. Remain same d. Increase / decrease depending on depth of immersione. Unpredictable.

118. Liquids transmit pressure equally in all directions. This is according toa. Boyle’s law b. Archimedes principle c. Pascal’s law d. Newton’s formula e. Chezy’s equation

119. Piezometer is used to measurea. Pressure in pipes, channels etc. b. Atmospheric pressure c. Very low pressured. Difference of pressure between two points e. Flow

120. The centre of gravity of a triangle lies at the point ofa. concurrence of the medians b. Intersection of its altitudes c. Intersection of bisector of angles d.Intersection of diagonals e. All of the above

121. A ball is throwing up. The sum of kinetic and potential energies will be maximum ata. Ground b. Highest point c. In the centre while going up d. At all the pointse. In the centre while coming down

122. The atmosphere of earth is retained due toa. Gravitational pull of earth b. Outer molecule attraction forces on the molecule c. As a result ofcohesion, adhesion, osmosis, etc. d. Spherical shape of earth e. Mean speed of molecule being much lessthan the escape velocity

123. According to Hooke’s law, stress and straina. Are directly proportional b. Are inversely proportional c. Are curvilineraly relatedd. Have unpredictable relationship e. None of the above

124. In an ideal machine, the output as compared to input isa. Less b. More c. equal d. May be less or more depending on efficiency e. Always equal

125. Creep in belt is due toa. Material of the pulley b. Material of the belt c. Larger size of the driver pulley d. Uneven extensionsand contractions due to varying tension e. Expansion of belt

126. The horse power transmitted by a belt is depending upona. Tension on tight side of belt b. Tension on slack side of belt c. Speed of pulley d. All of the above

127. Melting point of iron isa. 1539°C b. 1601 °C c. 1489 °C d. 1712 °C e. 1131 °C

128. Cupola produces following Materiala. Cast iron b. Pig iron c. Wrought iron d. Malleable iron e. White iron

129. Brass Contains 70% copper and 30% zinc

130. In which type of Welding chemical reaction takes placea. Resistance b. Termite c. Forge d. Gas

131. Resistance to fatigue strength is measured bya. Tensile Test b. Shear Test c. Endurance Limit

132. A fly wheel starts from rest and accelerates uniformly and reaches 25 rpm in 3 seconds. What willbe the angular velocity (in rpm) after 10 seconds? a. 20 b. 25 c. 45 d. 50

133. Radio active materials emitsa. Alpha b. Beta c. Gamma d. All the above

134. Expansion valves are used in pipes carryinga. Water b. Steam c. Viscous fluid d. Air at high pressure

135. ON/OFF Control application Valvea. Ball valve b. Globe valve c. Needle valve d. Butter fly valve.

136. Thermal Conductivity of Solids with increase of tempa. Increases b. Decrease c. Increases then Decrease d. Unpredictable

137. Idling mixture in Petrol Enginesa. Rich b. Lean c. Variable

138. Radiator is made up ofa. Brass b. Steel c. Plastic d. Cast Iron

139. Hysterises loss is least affected by a. Temperature b. Frequency c. Weight d. Density

140. Compiler is used forA. High level to the Language understandable by machines B. To convert the programmes from Digitalto Analog form C. To compile the instructions in registers D. Both B & C

141. Heat treatment of steel changesa. Physical b. Chemical c. Mechanical properties

142. Fusible plug is used fora. To control Steam Temperature b. To put off the fire when the water level in the boiler falls below thealarming limit c. To avoid Explosion.

143. Effect of Cavitation in Turbinesa. Noise and Vibration b. Efficiency c. Decrease in life of blades d. All the above.

144. The correct relation between Gauge pressures, Absolute pressure, Atmospheric pressure (4 choices)

145. Which of the following has the maximum Head?a. 33 inches Hg b. 756 mm of Hg c. 31.6 m of water (Not clear) d. 1.013 kg/sq.cm

146. Manometer is effective fora. High pressure b. Very High pressure c. Low pressure d. None of the above

147. Elasticity of a fluid is measured bya. Modulus of Elasticity b. Rigidity Modulus c. Bulk Modulus d. None of the above

148. Where the bending stress is maximum for I Section Beama. Neutral axis b. At the joint of wedge and flank c. where the shear stress is maximum d. Outer most ofthe fibres

149. The oil of sp. gravity 0.9 and water are kept in two identical vessels, Hydro static Pressure atbottom of oil will be a. More than pressure of the water at the bottom b. Less than pressure of the waterat the top c. Same d. Insufficient data

150. Cp / Cv of Gas at varying temperaturesa. Constant b.Increases c. Decreases(With some conditions)

151. Compression ratio of the C.I. Enginea. 8 to 10 b. 10 to 15 c. 16 to 20 d. None

152. The sate of the refrigerant in the vapour compression cycle before throttlinga. Wet b. Dry

153. Feuler gauges are used to Measure the clearance

154. High moisture content in the last stage of turbine will causea. Corrosion b. Low thermal efficiency c. Low Blade life d. All the above

155. What alloying material imparts corrosive resistance properties of steel a. Ni-Cr b. V,Cr c. Cr

156. Chip breakers are used fora. To permit small chips b. to increase tool life c. Safety

157. Jigs are used fora. Turning b. Milling c. Drilling d. Grinding

158. In coal refineries magnets are used to separatea. Dust b. Iron particles c. Sand d. All the above

159. Statistical processing is done fora. Improve the quality b. maintain the quality c. both 1 and 2 d. to increase the profit

160. What will happen to the specific volume of the water when it is heated from 0 degree ca. Increases b. Decreases c. Remain Constant

161. Reason for slipping when we walk on the Icea. Ice suface is smooth b. When we apply pressure on the Ice it gets melted

162. When the Ice cubes present in the glass of water get melted what will happen to the level of watera. Increases b. Decreases c. Doesn't change

163. First law of Thermodynamics deals witha. Conservation of Mass b. Conservation of Momentum c. Conservation of Energyd. Conservation of Heat

164. Tonnage of 165 domestic refrigerators

165. Thermal Conductivity of Water with increase in tempa. Increases with temp b. Decreases then increases c. Increases then Decreases d. Does not change

166. Purpose of conducting Tensile Test - Ductility

167. Which structure can be viewed by Naked Eye?a. Micro Structure b. Grain c. Macro d. Atomic

168. What is the material of Crank Shaft? Forged Steel or Less Carbon Steel

169. Standard time = a. normal time minus allowance b. reliability time

170. Energy stored in the spring when it is fully compressed without any deformation is Strain Energy

171. For which of the following material machinability is high? Aluminium

172. 24 & 2 in M24X2 represent which of the two parameters respectively?Diameter and Pitch

173. What is the equation governing kinematics links and pairs?a. L=2p-3 b. L=2p-4 c. L=3p-5

174. Pick out the wrong statementa. Joule cycle consists of 2 constant volume processes and 2 adiabatic processesb. Otto cycle consists of 2 constant volume processes and 2 adiabatic processesc. Ericsson cycle consists of 2 constant volume processes and 2 adiabatic processesd. None of the above

175. For same compression ratio which of the following cycle is more efficient?a. Otto b. diesel c. Dual Cycle d. All the above.

176. The angle between face of the tool and plane parallel to the base of the tool isa. rake angle b. clearance angle c. cutting edge angle d. lip angle

177. Bevel gears are used for transmitting torque betweena. Intersecting & coplanar shafts b. Non-intersecting & non-coplanar shaftsc. Non-parallel & non-coplanar shafts d. None of the above

178. Expansion process in Otto cycle lasts from TDC to BDC.

179. Which type of thread is more effective for power transmission in one direction?a. Square b. ACME c. Buttress d. Trapezoidal

180. The state of a liquid during evaporation isa. Vapour b. Steam c. Water vapour d. None of the above

181. Throttle valve is used in steam engines toa. control pressure of steam b. control volume of steam c. control temperature of steamd. none of the above

182. The pressure P in terms of its mean kinetic energy/unit volume E isa .E/3 b.E/2 c.3E/4 d.2E/3 e.5E/4

183. Convert volumetric to gravitational, relative volume of each constituent of flue gasa. %mw b. xmv c. me d. xsw e. %sw

184. Which is correct for reversible polytrophic process?a. temperature constant b. density constant c. volume constantd. entropy constant e. same heat transfer

185. If a gas or vapour allowed to expand through a minute holea. free expansion b. hyperbolic c. adiabatic expansion d. parabolic e. throttling

186. Minimum work of compressor is possible, when the adiabatic index isa.0.75 b.1 c.1.27 d.1.35 e.2

187. Under ideal condition, isothermal, isochoric, adiabatic and isobaric area. Static b. dynamic c. quasi-static d. stable e. thermodynamic

188. If a heat engine attains 100% efficiency, then it isa. Zeroth law b. I law c. II law d. no e. all

189. If Q1 is the heat in source, Q2 is the cold sink for heat pump then COPa. Q1 / (Q1- Q2) b. Q2 / (Q1- Q2) c. (Q1- Q2) / Q1 d. Q2 / Q1

190. The output of diesel engine is increased ifa. more fuel b. flywheel size c. incoming air d. scavenging e. supercharging

191. Key used between shaft and pulley is made from? Cold rolled mild steel bars

192. Hardness of steel depends on shape & distribution of ….in iron? Carbides

193. Hardening of Machine tool guideways is done by? Flame hardening

194. Carriage and tailstock are placed in ….. guideways? Different

195. Acetylene is stored in liquid form

196. Size of shaper is specified by? Length of stroke

197. Hardness of wheel (or) grade of wheel refers to? Strength of bond of wheel

198. For grinding harder materials…… is used? Softer grade

199. Dielectric medium in EDM is? Kerosene

200. The most popular firing sequence a.1234 b.1324 c.1423 d.1243 e.1342

201. Accumulation of carbon in the cylinder increases whena. decrease in volume b. volumetric efficiency c. ignition timed. effective compression ratio e. travel time

202. For same power, same speed, flywheel of petrol and diesel engine area. smaller b. greater c. equal d. none

203. If petrol is used in diesel engine, then which will occura. higher knocking b. black smoke c. More fuel Consumption d. improper combustion

204. Reciprocating compressor is used fora. large quantity of air at high pressure b. large quantity of air at low pressurec. low quantity of air at low pressure d . Low quantity of air at high pressure

205. Thermal diffusivity is ____________a. Dimensionless b. Used in radiation c. used in Convectiond. Used in Conduction

206. When the Centre of pressure and Centre of gravity are equal?When the body is horizontal

207. Flow of particles in definite path without change in the path of the particlea. One dimensional b. laminar c. turbulent d. steady state

208. Vortex on whirlpool is due toa. cavitation b. wake c. drag

209. Sling Psychometer is used for Humidity

210. Axial flow pump is used large flow and small head of fluid

211. Hardening of shear face in press tool is to ---------------.

212. Blank size is equal to ……….in presswork. Size of punch

213. Bending moment diagram for a UDL in cantilever beam.a. Parabola b. Triangle c. Rectangle.

214. Reverse joule cycle is ………. (Bell coalman cycle, Rankine cycle, brayton cycle)

215. During idling and low speed running which mixture is used……..rich mixture, lean mixture,

216. Multi slurry is used for …………? High efficiency, balancing and uniform torque, runcontinuously when one cylinder is failed.

217. Entropy changes with ……?a. internal energy change, b. Pr & Vol change c. change of state d. Change in temp

218. In which process max work can be obtained….? Const Volume, Const Pr, Const Temp, ConstEntropy

219. In throttling process………is constant? (Enthalpy, entropy)

220. To avoid caviation Superheated steam allowed

222. What is Rupture Necking due to prolonged creep

223. A belt drive, where pulley dia is double, and then it key length must bea. doubled b. same c. increase the critical length d.

224. Surface contact in motion is calleda. roller pair b. surface pair c. lower pair d. sliding pair

225. For fluctuating load----------- is useda. ball bearing b. roll bearing c. thrust bearing d. sleeve bearing

226. D1 and D2 are pulley dia, and then the speed ratio is given by D2/D1

227. In pinion and gear design, the design must be made bya. gear b. pinion c. both

228. The plate is severely deformed at a side then it grains becomesa. Ductile b. Malleable c. Brittle

229. What is recrystallation temperature? Maximum temperature upto which old crystal disappears

230. What is austempering? Heated steel is quenched from the Austenizing Temperature

231. Acetylene is stored in --------- forma. liquid b. solid c. compressed d. All the above

232. Tool life is concentrated ona. cutting speed b. material c. feed or depth d. All the above

233. Reamer is used fora. To drill b. to correct the size and finish c. Threading

234. Statistical quality control charts usesa. statistics b. probability c. all the above.

235. Material used for coating the electrode is calleda) Protective layer b) binder c) slag d) deoxidizer e) flux

236. The strength of a properly welded joint as compared to base metala) Same b) more c) less d) unpredictable e) two can’t be compared

237. The surface to be machined are marked on the pattern by the following colora) Black b) yellow c) red d) blue e) green

238. A 20 tonne press implies thata) Weight of press is 20 tonnes b) press can handle works weighing upto 20 tonnesc) it can exert pressure upto 20 tonnes d) its foundation should be designed for 20 tonnes.e) its turnover in a day is 20 tonnes

239. No lubricant is required when cutting threads ina) Tungsten carbide b) Mild Steel c) Titanium d) Brass or cast-iron e) HSS

240. The difference between planner and shaper is that in former casea) Tool moves over stationary work b) tool moves over reciprocating workc) Tool can machine internal as well as external details d) both tool and job reciprocatese) Tool is stationary and job reciprocates

241. Powder metallurgy techniques are used in production ofa) High carbon tool steel b) HSS tools c) tungsten carbide tools d) twist drills e) ceramics

242. Drilling is an example ofa) Simple cutting b) uniform cutting c) orthogonal cutting d) oblique cuttinge) Intermittent cutting

243. Reamer is used to correct thea) Size and position of drilled hole. b) size and roundness of holec) Finish and position of drilled hole. d) finish and size of drilled holee) Finish and depth of a drilled hole.

244. The operation of milling two sides of a work piece simultaneously is calleda) Gang milling b) climb milling c) square milling d) straddle milling e) End milling

245. In which type of milling operation the chip is cut off at thinnest place and the chip thicknessincreases along chip length a) Up milling b) down milling c) end milling d) climb milling e) key waymilling

246. A sine bar is specified bya) Its total length b) the center distance between two rollers c) size of the rollersd) The distance between rollers and upper surface e) weight of sine bar

247. Expressing a dimension as 18.3±0.02 mm is the case ofa) Unilateral tolerance b) bilateral tolerance c) limiting dimensionsd) All the above e) none of the above

248. LASER stands for Light amplification by simulated emission of radiation

249. Gantt chart provides the information abouta) Material handling b) proper utilization of manpower c) production scheduled) Efficient working of machine e) all the above

250. Normalising operation is carried out ina) Furnace b) air c) water d) oil e) controlled atmosphere

251. Draw the Fillet welding symbol

252. Who is the father of scientific management? F.W.Taylor

253. PERT stands for Projection Evaluation and Review Technique

254. Draw Third angle projection symbol

255. What is the unit of specific gravity? No Unit.

256. Momentum is a _______________ quantity (Scalar / Vector)

257. Pressure applied in a liquid in all directions will be given by Pascal’s law.

258. In Piercing and punching, clearance will be applied on Punch

259. Permanent plastic deformation of metals under compression is known as Malleability

260. To increase corrosion resistance which material will be added? Chromium

261. Cycle used in petrol engine? Otto

262. What is the use of index pulley? To provide grip to the pulley.

263. What is resilience? Energy absorbed by the material when it is loaded.

264. M20*2 –in this 20 represents what? Major Dia

265. Property of which type of material is same in all directions? Isotropic of materials

266. Solder is an alloy consisting of Tin & Copper

267. In a cantilever beam when a point load is applied on free end, where will failure occur? At thefixed end.

268. Plastic deformation due to constant load at high temp is known as Creep.

269. What is Galvanizing? The process of coating of zinc by hot dipping.

270. ABC analysis deals with Controlling inventory costs money.

271. When pulley dia is doubled, width is kept constant, tension is kept constant key size should bea. Doubled in length. b. Doubled in depth. c. Both twice.

272. Thermoplastics can be molded by Injection molding

273. Which load is safe for beam---------------?a. Point load. b. UDL locally. c. UDL fully. d. UVL.

274. Machine tool drives are generally given in:a. Arithmetic progression b. Geometric progression c. Harmonic progression d. None of the above

275. Finite element analysis is used in:a. Accurate measurement b. Stress analysis C. metallurgy D. none of the above

276. Coolant is generally not used while machining:A. low carbon steel B. high carbon steel C. cast iron D. alloy steel

277. Machinability of steel is improved by the presence of:A. nickel B. tungsten C. sulphur D. chromium

278. Negative rake angle:A. increases cutting force B. reduces cutting force C. no effect on cutting force D. none of the above

279. The hardest tool material used is:A. coated carbide B. high speed steel C. boron nitride D. diamond

280. Stick slip phenomena is associated withA. spindle rotation B. belt drives C. slide movement D. none of the above

281. Gear hobbing is:A. shaping process B. generating process C. forming process

282. Cutting speed of HSS tools while cutting low carbon steel is:A. 40M/Min B. 250M/Min C. 500M/min D. none of the above

283. Cutting speed of carbide tools while cutting low carbon steel is:A. 40M/Min B. 250M/Min C. 500M/min D. 80M/Min

284. Straightness that can be achieved over a length of 300mm by grinding:a. 0.005-.01mm b. 0.1-0.2mm c. 0.05-0.1mm d. 0.5-0.8mm

285. The circularity achieved by finish turning on a standard centre lathe is:a. 0.005-0.008mm b. 0.0-0.08mm c. 0.1-0.2mm d. 0.2-0.3mm

286. Honing can correct:A. oviality B. taper C. straightness of bore D. axial curvature

287. Machine tool sliding surfaces are finish matched by:a. surface grinding b. fine milling c. slideway grinding d. scraping

288. Close sliding fit is given by:a. H7/g6 b. H7/h6 c. H7/p6 d. H7/k6

289. 60H6 can be achieved by:A. turning B. boring C. drilling D. internal grinding

290. The displacement accuracy which can be achieved on a jig boring machine is:A. 5/µm B. 50/µm C. 100/µm

291. Hardness values in cast iron can be measured in:A. shore b. BHN c. Rockwell d. None of the above

292. Auto collimator is used to measure:a. Dia upto 0.001mm b. Lengths c. Straightness d. Involutes error

293. Surface finish is measured by:a. Comparator b. Planograph c. Sprit level d. None of the above

294. The outside diameter of a 20 teeth 3 module gear is:a. 54 b. 60 c. 63 d. 70

295. Herring bone gear is used for:A. high speed transmission B. noise free transmission C. better load transmission D. none of the above

296. In a right angle transmission by helical gears, the hands of the helix of the gears are:A. same B. opposite C. immaterial D. none of the above

297. Worm drive is always self-locking: true or false

298. Most hydrostatic bearings normally work under:A. const flow system B. const pr system C. const temp system D. const vol system

299. Ball bearings are not generally used in crank shafts of automobiles because:A. of high cost B. of high speed C. cannot be assembled D. none of the above

300. Bronze is used in journal bearings essential to:a. reduce friction b. reduce heat c. eliminate oxidization d. eliminate seizing.

301. The spindle of high precision cylindrical grinder is mounted on:A. ball bearing B. taper roller bearing C. hydrostatic bronze bearing D. needle bearing

302. To accelerate the flow of gases:A. nozzle is used B. diffuser is used C. dia of pipe to be increased D. none of the above will help

303. Hydraulic accumulator:A. acts as an accumulator for dirt B. acts as storage of hydraulic energyC. acts as a pressure relief arrangement D. none of the above

304. When ice which is floating in water, melts, does the level of water:A. goes up B. goes down C. remain the same

305. Hammer blow in pipe happens due to:A. friction in pipes B. change in temperature C. stoppage of flow D. none of the above

306. Temperature rise in fluid flow causes:A. reduction in viscosity B. increase in viscosity C. no effect

307. Ratio between velocity of sound and velocity of any object is:A. prandtl number b. Reynolds number c. Avagadro’s number d. Mach number

308. Cavitation effect in flow occurs due to:a. Excess pressure b. Excess temperature c. Excess flow d. None of the above

309. In electrical locomotives ultimate transmission is by:a. AC motor b. DC shunt motor c. DC series motor d. Synchronous motor

310. Four beams of identical sections and lengths are made of cast iron, aluminium, steel and hardenedsteel. The beams are fixed at both ends, for a uniformly distributed load which will deflect least: a. Castiron b. Aluminium c. Steel d. Hardened steel

311. Geneva mechanism is used for obtaining:a. Intermittent motion b. Accelerating motion c. Continuous motion d. None of the above.

312. Corioles component is associated with:a. Displacement b. Acceleration c. Velocity d. None of the above

313. Effect of increase of outside diameter of a helical compression spring on its rigidity is:a. Increased rigidity b. Decreased rigidity c. No effect d. Dry friction

314. Jominey curve is related to the study of:a. Hydraulics b. Thermodynamics c. Electrical d. None of the above

315. TTT diagram is used in:a. Surface finish b. Heat treatment c. Stress analysis d. Thermodynamics

316. Mehanite is the name given to a type of:a. Alloy steel b. Granite c. Nodular cast iron d. Cast iron

317. Unwanted impurity in molten aluminium is:a. Oxygen b. Carbon dioxide c. Nitrogen d. Hydrogen

318. Carburizing is done:A. For blackening of high carbon steel B. For case hardening of low carbon steelc. For post hardening process to reduce internal stressesd. To increase machinability of high tensile steels

318. Hardness in steel is as a result of:a. Martensitic structure b. Pearlitic structure c. Leduburetic structure d. Austenitic structure

320. Piston of an IC engine is made out of:a. Cast iron b. Steel casting c. Beryllium alloy d. Aluminum alloy

321. Montreal protocol limits the use of Ozone depleting substance

322. The crank shaft of a 300 HP IC engine is:a. Hot forged b. Shell moulded c. Cold forged d. Obtained through investment casting.

323. Rain drop is spherical due to Surface tension

324. Global warming is due to Carbon-di-oxide

325. One ton of refrigeration is equal to 12000 btu/hr

326. For a laminar flow Reynolds flow should be Less than 2000

327. In latent heating a substance changes phase without increase in temperature

328. Degree of saturation is ratio of _______?

329. A pipe friction test shows that, over the range of speeds used for the test, the non-dimensionalfriction factor f, varies inversely with Reynolds No. It can be inferred from above that, ans. Pipe shouldbe smooth.

330. In a rough turbulent flow in a pipe, the friction factor would depend upon?Ans. Pipe diameter and pipe condition.

331. What is the refrigerant used in vapour absorption cycle?

332. Expansion in a vapour compression cycle is an Isenthalpic process

333. What is the work of throttling process? Ans. Expansion

334. What is the material of heat exchanger tubes? Ans. Copper

335. Tachometer is used to measure Speed

336. Mercury is used in manometer because ________?

337. Check valves are used to ensure unidirectional flow

338. Anti-freeze agent used is Ethylene glycol

339. Anemometer can be used to measure _________?

340. Bypass factor of a cooling coil is _________?

341. Aspect ratio of a rectangular duct is the ratio between its _______?

342. The temp that is numerically the same in Fahrenheit & centigrade scales is ________?

343. The loudness of sound depends upon its ________?

344. Dew point is the temperature at which water vapor will undergo ________?Ans. Condensation

345. In inductance _______ leads _______?

346. Power factor is least in ______? a. capacitance b. resistance c. inductance

347. Barometer is used to measure _______?

348. Identify the odd one out a. DIN b. ISI c. JIS d. IIT

349. If the NPSH requirements of a pump are not satisfied it wills _______?

350. Approach of a cooling tower is the difference between temperatures of ________?

351. A parallel flow heat exchanger will perform better than a counter flow heat exchanger. Statewhether this is true or false

352. The index that normally reflects laminar flow in a tube is ______? Ans. Reynolds no.

353. Pressure drop in air duct is influenced by __________? ans. Shape of the duct

354. By increasing the intake air temp, efficiency of IC engine will _______? Ans. decrease

355. The velocity of the sound depends ona. pitch b. quality and pitch c. loudness and quality and pitch d. none of the above

356. Theoretical correct air fuel ratio for petrol a.6:1 b.9:1 c. 10:1 d. 15:1

357. The knock in diesel engine occursA. instantaneous and rapid traverse of first part of the chargeB.Reduction of the delay periodC.instantaneous and auto ignition of the end part of the chargeD.All the above

358. Ignion quality of the diesel fuel oil is measure by index no is calleda. octane b. cetene c. calorific value d. carbon no

359. Carnot cycle maximum efficiency forA. reversible engine b. irreversible c. petrol d. diesel

360. Compressed air coming out of the punctured foot balla. attains atm temp b.remains at same temp c.becomes cooler d.becomes hotter

361. The product of EI isa. flexural rigidity b.section modulus c.polar modulus d.modulus of rupture

362. Which of the following is the thin cylinder?a. boilers b.steam pipes c.water pipes d.all the above

363. Hoop stress induced in the thin cylinder by winding it with wire under tension will bea.0 b.tensile c.compressive d.shear

364. As compared to rivet joint to welded joint has ------ strengtha.higher b.lesser c.either above d.none of the above

365. ------------ gear train is one in which each shaft call as one wheel onlya.simple b.compound c.epicyclic d.none

366. In the clock ----------gear train is used to commonly minute to houra.simple b.compound c.epicyclic d.none

367. If the earth shrinks by half the radius duration of one dayA.4 hrs b.6 hrs c.12 hrs d.24 hrs

368. A tool used in cutting an external thread is calleda. twist drill b.tap c.die d.end mill

369. In ----- moulding green sand is is generally useda. floor b. late c. bench d. it

370. With increase in cutting speed power requirement isa. decrease linearly b.remains constant c.increase linearly d.Unpredictable.

371. What will be the locus of a point on a thread unwound from a cylinder?a. involute b. helix c. straight line d. circle

372. The ratio of no teeth to pitch circle diametera. pitch b. circular pitch c. diametrical pitch d. module

373. Difference between dedendum and addendum isa. backless b.clearence c. flank d. tooth space

374. Compare to air craft air velocity in a rocket isa. 0 b. less c.more d. same

375. -------------is suitable for space travela. turbo jet b. turbo prop c. rocket d. all the above

376. Rain drop is spherical due toA. surface tension B. specific weight C. specific gravity D. all of the above E. none of the above

377. By increasing the intake air temperature, efficiency of an IC engine will generallyA. increases B.decreases C. remains the sameD. increases at the beginning and then decreases graduallyE. none of the above

378. A stone initially at rest is dropped from the edge of a very tall building. Taking acceleration as10m/s2, what was the change in the speed of the stone during the 4th second?a. 10m/s b. 30m/s c. 15m/s d. 40m/s e. None of the above

379. What type of thread is used in lead screw of a lathe?A. acme thread B. V-thread C. square D. buttress E. none of the above

380. In latent heating, a substance involves _________ in phase with _________ in temperature.A. change, increase B. no change, increase C. change, no increase D. no change, no increaseE. none of the above

381. For a cantilever beam with uniformly varying load, shape of bending moment curve isa) Parabolic b) hyperbolic c) Straight line d) cubic e) None of the above

382. Hammer blow in pipe happens due toa) Friction in pipes b) Change in temperature c) stoppage of flow d) All the above e) none

383. Which of the following statement(s) is/are true?a. A parallel flow heat exchanger will perform better than a counter flow heat exchangerb. Montreal protocol (1987) limits the use of ozone depleting substancec. Both (a) and (b) are true d. None of the above is true e. Data insufficient

384. The mercury does not wet with the glass. This is due to the property of the liquid known asa. Cohesion b. Adhesion c. Capillarity d. Surface tension e. both (a) and (b)

385. The increase in hardness due to cold working is known asA. age hardening b. work hardening c. induction hardening d. flame hardening e. none

386. Which of the following methods in welding uses a pool of molten metal?a. Carbon arc welding b. TIG welding c. Submerged arc welding d. MIG welding e. Thermit welding

387. A spark plug gap is kept betweenA. 0.3 to 0.7 mm B. 0.2 to 0.8 mm C. 0.4 to 0.9 mm D. 0.4 to 1 mm E. none

388. Which of the following fuel has little tendency towards detonation?a. Benzene b. Iso-octane c. N-heptane d. Alcohol e. None of the above

389. Which mechanical property a metal should possess to enable it to be mechanically formed?A. ductility b. malleability c. elasticity e. machinability e. None of the above

390. The strain energy stored in a spring, when subjected to maximum load, without sufferingpermanent distortion, is known asa. Strain energy b. Resilience c. Proof Resilience d. Proof stress e. None

391. How many of the following statements may be false?1) The index that normally reflects the nature of flow in a duct is Reynolds number2) One ton of refrigeration is equal to 12000 btu/hr3) Pressure drop in air duct is influenced by shape of the duct4) The viscosity of hydrogen increase with increase of temperatureA. One only b. Two only c. Three only d. All the above e. None of the above

392. Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through itsvertex and parallel to the base is __________ than that passing through its C.G. and parallel to the base.a. Nine times b. six times c. four times d. one-half e. one-third

393. A hydrometer is used to measurea. velocity of fluids b. velocity of gases c. flow of fluids d. specific gravity of fluids e. none of these

394. Which law states that change in internal energy of a perfect gas is directly proportional to thechange in temperature?a. Avagadro’s law b. Gay-Lussac law c. Joule’s law d. Newtonian law e. None of these

395. A taper provided on the pattern for its easy and clean withdrawal from the mould is known asA. machining allowance b. draft allowance c. shrinkage allowance d. distortion allowancee. None of the above.

396. Hygrometry deals with moisture content in air

397. 1 kg-m =9.81 J

398. Relation between gauge, abs atm pressures

399. Work-study deals with

400. Time study deals with

401. Expand MIS-Management Information System

402. CPM and PERT deals with determining the status of the project

403. To avoid cavitation in a centrifugal pump inlet pressure should be high

404. Expand NTP- Normal temperature and pressure

405. Dalton’s law of pressure total pressure equals sum of partial pressures.

406. As per Avogadro’s hypothesis molecular wt of all gases occupy the same volume under sameconditions of temp and pressure

407. Use of intercooler- to reduce work input.

408. Use of after cooler to reduce volume of receiver.

409. Water hammer occurs due to sudden obstruction in flow.

410. ABC analysis deals with

411. Main objective behind plant layout isA. to avoid back tracking b. To minimize the space occupied

412. Efficiency of diesel engine as compared to petrol engine under same rated load (high)

413. Which of the following is not present in a CI engine?a. Fuel injector b. Carburetor c. Fuel pump

414. Which of the following is not present in a SI enginea. Spark plug b. Carburetor c. Fuel injector

415. Pour point is (min temp at which a liquid flows at set condition)

416. Zeroth law of thermodynamics

417. In value engg “value” means----------

420. Second law of thermodynamics deals with entropy

421. Mach no deals with------

422. Output=9kW, Input=30kW, Efficiency=? 30%

423. Overall hear transfer co-eff. Present ina) Conduction b) Convection c) Conduction and convection d) All modes of heat transfer.

424. Orifice Definition provision for flow of liquid with regulation

425. Break even point no profit and no loss

426. If a block of ice floating in a tub of water and gets melted then what will be the level of water a.falls down b.rises c. remains the same

427. Compressed air coming out of a punctured footballA) Remains at the same temperature B) becomes hotter C) becomes cooler

428. Heat transfer takes place as pera) Second law b) First law c) Zeroth law

429. Choking in compressor means change in mass flow rate with proportional to Pr ratio, change inmass flow rate with inversely proportional to Pr ratio, fixed mass flow rate regardless to Pr.

430. Formation of frost in refrigeratora) Can be prevented if design is proper b) Heat transfer becomes more c) Heat lossd) Immaterial.

431. Supercharging is the process of increasing the density of the inlet charge.

432. How will you find the unburnt mixture in exhaust gas?a) Analyzing CO b) Analyzing Oxygen.

433. Compression ratio is the ratio ofa) Delivery pr.to inlet pr. b) Inlet pr to delivery pr. c) Stroke volume to clearance volume

434. To reduce moisture troubles the compressor main should bea) Vertical b) Horizontal c) Slanting

435. Critical activity isa) Zero float b) High float c) Low float

436. Cash discounts is based ona) Sold on credit b) Bargaining capacity of the seller c) Payment of instant cash437. 1 kW-hr=3600 kJ.

438. Which process is more effective for compression?a) Isothermal b) Adiabatic c) Polytrophic

439. What did W.H. Taylor do?

440. An adiabatic compression is one in which no heat enters or leaves the system.

441. What happens if the refrigerator doors are kept open? The room will be warmed up gradually.

442. In break even analysis, profit occurs when sales revenue >total cost.

443. In which device, the temp of the refrigerant is the lowesta) Compressor b) Condenser c) Expansion valve d) Evaporator

444. A material piece weighs 2.5 kg in air and 3 kg, when immersed in water, then sp.gr is

445. A body of sp.gr 7 is immersed in mercury of sp.gr 13.6. What percent of the body will be immersedin water? 0.515.

446. 1 tonne of refrigeration is the cooling effect produced when melting one tonne of ice

447. Unit of power Watt.

448. What is the use of the reverse flow of air in compressor?a) Cleaning the dust particles settled b) Velocity of the air flow increases c) pressure increases

449. Rota meter – Flow measurement

450. If we use petrol in diesel engine lot of fuel will remain unburnt.

451. In V belt drive contact is made on a) bottom b) sides c)bottom and sides

452. The intake of air in an air compressor can be had froma) An area nearby coal yard. b) An area nearby a cooling tower. c) A room in which conditioned air ismaintained at 20°C. d) Atm air maintained at 1°C

453. Section modulus of hollow shaft PI/32*(D4-d4)/D

454. Down milling is also called ___________? Climb milling

455. Drilling is an example of ____________? Oblique cutting

456. Section view of ’C’ washer___________?

457. Deflection of simple supported beam carrying UDL _________? 5/384*WL^4/EI

458. Flexible coupling is used because

459. Washer is used to provide ________________? Bearing area

460. Initial tension is considered in 1) Tension springs 2) Compression springs 3) Both

461. Kelvin plank law deals with 1) Conservation of work into heat 2) conservation of heat into work

462. Soldering alloy consists of __________? Tin and lead

463. Why chromium is used in steel alloys? Corrosive resistance

464. High cutting speed is obtained while machining 1) HSS 2) carbide 3) CBN

465. Metal forming is an example of _____________? chipless machining

466. Top rake angle is provided for______________? Easy removal of chip

467. Alloying is done for increased strength and application

468. Why transformer is used in welding 1) to convert AC to AC 2) AC to DC 3) DC to AC

469. Spherical cast iron is getting from Grey cast iron by adding _________? Mg

470. In throttling process Enthalpy__________? constant

471. 70 cc of engine means____________? Swept volume

472. Geneva mechanism is used for______________? Intermittent motion

473. In NC system for profile machining1) Point to point 2) contour motion 3) paraxial motion.

474. In centreless grinding, the grinding wheel and the regulating wheels rotate in the same direction.

475. Centridal distance of a semi circle 4*r/3*pi

476. Highest packing factor: FCC

477. Which chart takes care of control attributes: P chart, C chart, R chart

478. Fixture is used for holding the work piece without disturbing the tool path

479. Code for circular interpolation G 02

480. Order of transmission in a car: EFCPD (Engine Flywheel Clutch Propeller shaft Differential)

481. Reverse gear has less speed because1. More speed is not necessary in reverse gear 2.Steering is difficult in the reverse direction 3.less spaceavailability 4. Design simplification

482. Use of annealing: _____________? To relieve stresses

483. Pulley question: w=f/2

484. Equivalent stiffness of springs in series: k1k2 / (k1+ k2)

485. Deflection=5 mm. stiffness=k. then applied load is 5 k

486. Bevel gear is used in differential.

487. Which of the following uses consumable electrodes? MIG.

488. Alloy used in the manufacture of surgical instruments.Martensitic stainless steel (Chromium steel)

489. Uses of superconductors.

490. What path does double slider crank mechanism follows. (Check if it is Elliptical).

491. Ratio between Brake horse powers to the energy supplied. Brake thermal efficiency

492. Two emfs E1 and E2 are given. Among two lengths one is given. Be clear with the relationbetween ratios of emfs to the lengths across.

493. What is anodizing?

494. What is honing?

495. What is hermoplastic?

496. The value of pressure used in elec resistance welding 2KN

497. Up milling opposite direction

498. Down milling same direction

499. Pump in sewage lobe pump

500. Pump in oil gear pump

501. Heat transfer based on which the law second law.

502. Sum using thermal coefficient of exp to fin stress

503. Critical speed of a shaft is affected by Span of the shaft

504. Starting friction is low in

505. Heat transfer is based on which law (zeroth, first, 2nd, kirchoff)

506. In refrigeration where will temp be max? Between compress and condenser

507. Stoichiometric AF ratio is chemically correct mixture by efficiency.

508. How will u compute performance of diesel eng? bsfc

509. How will u pump sewage water i.e. which pump? Lobe pump

510. How will u pump viscous fluid? Gear pump

511. Honing process: Surface finish

512. If thread angle is increased (mechanical adv decreases)

513. Principal plane condition :( shear stress 0, normal stress max)

514. If refrigerator is opened in a room, fan is also on. What will happen to room temp? Tempincreases.

515. Graft in casting

516. How will u improve resistance?

517. Magnetic compass indicatesa) true north pole b) anionic earth pole c) geographic north pole d) magnetic north pole.

518. For a cantilever beam with uniformly varying load, shape of bending moment curve isa)parabolic b) hyperbolic c) straight line d) cubic.

519. For perfectly elastic bodies, coefficient of restitution is a) 0 b) 0.5 c) 1 d) infinity.

520. For 1st order lever, mechanical advantage is a) <1 b)>1 c) =1 d) none.

521. 18:4:1 in H.S.S represent a) 18tu : 4vn : 1 cr. Other choices r just interchanged.

522. Due to intense braking of an automobile reaction of wheels on roadA. Will be equally distributed to all 4 wheels. B. Will be more at rear wheels C. Inertia will be on thefront wheels. D. Not remember.

523. Thermal efficiency of I.C engines will be a)20-25% b)30-35% c)60-75% d) 45- 55%.

524. when a mass is supported by spring of spring constant k, which is cut in 4 equal pieces and theconnected in parallel way the equilent spring constant is a)k/4 b) 16k c) 64k d) k.

525. when a mass is supported on roof of a elevator and elevator moves with an acceleration of 4.9 m/s2shows a spring reading of 15kg, then the weight of the body is a) 10 b) 15 c) 30 d)20.526. Mass production of bolts and rivets is bya .hot extrusion b .forging c .cold heading d .cold peening

527. why doesn’t mercury stick to glass tubea .cohesive force>adhesive force b .cohesive force<adhesive force c .cohesive force= adhesive forced .none of the above

528. How r bolts and nuts manufactured? A. head stamping b .cold extrusion c .cold peening d .forging

529. Euler’s formula is used for column of length a. >80 b. <80 c. >90 d. >110

530. If a body weighing 40kg floats in water with 40% of volume immersed, the sp.gravity of the bodyis a. 1 b. 0.16 c. 0.25 d.

531. Axial claw clutches a. Disengages b. engages c. engages only with load d. operates only with load

532. If center distance of a involutes mating gear changes then the pressure anglea. Increases b. decreases c. remains unaltered

533. Normalising isA. heated above critical temp and cooled in air. B. heated above critical temp and quenched in oilC. heated below critical temp and cooled in air

535. The best suited material for permanent magnet a. Alnico b. silicon

536. Hooke’s joint is used forA. parallel and intersecting shafts B. non parallel non intersectingC. nonparallel and intersecting D. parallel and non intersecting

537. To have a const.velocity ratio the two gears should have (or) angular velocity of the gear willremain the same if the .......... cuts the line joining ........ at a fixed point law of gearing

538. Which of the following is a loose running fit a. h6f6 b.h6e6 c. h6d6

539. Fahrenheit and centigrade are equal at a.-40 b.0 c. 32 d.100

540. M10 hexagonal bolt is manufactureda. upset forging and thread rolling b. Casting and thread rolling

541. Specific speed in a turbo machine depends on a. geometric shape, b. size, c. head, d. all the above.

542. Unit of surface roughness is a.micron, b. PPM, c. mm2 d. meter

543. Mohr’s circle is used to find

544. Storage, transportation, operation, delay, inspection symbols are used inA. process chart, b. mam m/c chart, c. grant chart, d. all the above.

545. Melting point of ice changes with a. increase with pressure, b. increase with pressure ratio.

546. If the speed of fan is doubled, quantity of air displaced isa. doubled, b.4times, c.1/2 times d. remains same.

547. Which has less carbon content?A. tool steel, b. spring steel, carburising steel, forging steel.

548. When a helical compressive spring is subjected to axial compression load, the stress induced in thespring will be a. tensile, b. compressive, c. shear. d. none

549. For a bar element if area, length, and stress are doubled the elastic strain energy will beA. Half b. doubled c. 4 times d. 8 times

550. For a punching die, 2mm thick sheet, dia. D, force f, the shear force is 8800.

551. Spheroidising is a process ofA. annealing b. normalizing c. tempering d. case hardening

552. What type of thread is used in lead screw of a lathe A. acme thread B. V C. Square D. buttress

553. Wear allowance of a go nogo end plug gauge is given for a.. go end b. nogo end

554. Internal spur gears can be made by using a. Gear shaping b. slotting c. Gear hobbing

555. Height of the capillary varies with A. Increase with increase in dia of tube B. increase with increasein sp. weight C. increase with decrease in dia D. increase with decrease in sp. weight

556. A bolt of nominal diameter 33mm the stress of 100N/mm2 the safe load isA) 60 KN b) 100 KN c) 160 kN.

557. A cylinder with in 1% of the tolerence capacity limit, the permissible tolerence in height and radiusare is 0.2% radius and 0.25 height.

558. In ball bearings cage is used fora. to maintain the ball position b) to maintain parallelism between inner and outer race.

559. Pumped storage plants are used mainly for A. High head b) run off river.

560. For an incompressible solid, poisson’s ratio is

561. Distance of ozone layer from surface of eartha. 0 to 100 km b 20 to 50 km c. 50 to 100 km d. 10 to 15 km

562. An elevator is moving up with an acc. of 4.9 m/sec2 a body weighing 15 kg is attached with springbalance. What is the value in the spring balance a. 10 b. 15 c. 20 d. 30

563. At same heat input and max pressureA. efficiency of otto cycle more than diesel B. efficiency of dual cycle more than dieselC. efficiency of diesel cycle more than otto

564. Bending stress is (y is the distance from the neutral axis)A. inversely proportional to y b. proportional to y c. independent of y

565. If the body is 40% immersed in water what will be its specific gravity

566. The temp at the three edges of a square shaped body is 0 C and on the fourth edge is 100 c find theTemp at the centre of the square a. 25 b. 100 c. 50 d. 0.

567. Machine tool drives are generally given in:a) Arithmetic progression b) geometric progression c) Harmonic progressiond) none of the above

568. Finite element analysis is used ina) Accurate measurement b) stress analysis c) Metallurgy d) none of the above

569. Coolant is generally not used while machininga) low carbon steel b) high carbon steel c) cast iron d) alloy steel

570. Machinability of steel is improved by the presence ofa) nickel b) tungsten c) sulphur d) chromium

571. Negative rake anglea) increases cutting force b) decreases cutting force c) no effect on cutting forced) none of the above

572. The hardest tool material used isa) Coated carbide b) high speed steel c) boron nitride d) diamond

573. Stick slip phenomenon is associated witha) Spindle rotation b) belt drives c) slide movement d) none of the above

574. Gear hobbing isa) Shaping process b) generating process c) forming process

575. Cutting speed of H.S.S tools while cutting low carbon steela) 40m/min b) 250m/min c) 500m/min d) none

576. Cutting speed of carbide tools while cutting low carbon steela) 40m/min b) 250m/min c) 500m/min d) 80m/min

577. Straightness that can be achieved over a length of 300mm by grindinga) 0.005 -0.01mm b) 0.1-0.2mm c) 0.05-0.1mm d) 0.5-0.8mm

578. The circularity that can be achieved by finish turning on a standard centre lathe isa) 0.005-0.008mm b) 0.0-0.08mm c) 0.1-0.2mm d) 0.2-0.3mm

579. Honing can correcta) oviality b) taper C) Straightness of bore d) axial curvature

580. Machine tool sliding surfaces are finish matched bya) surface grinding b)fine milling c) slide way grinding d)scraping

581. Close sliding fit is given bya) H7/g6 b) H7/h6 c) H9/p6 d) H7/k6

582. 60H6 can be achieved bya) Turning b) boring c) Drilling d) internal grinding

583. The displacement accuracy which can be achieved on a jig boring machinea) 5/µm b) 50/µm c) 100/µm

584. Hardness value in cast iron can be measured ina) shore b)BHN c)Rockwell d)none

585. Auto collimator is used to measurea) dia upto 0.001mm b) lengths c) straightness d) Involutes error

586. Surface finish is measured bya) comparator b) planograph c) sprit level d) none

587. The outside diameter of a 20 teeth 3 module gear isa) 54 b) 60 c) 63 d) 70

588. Herring bone gear is used fora) High speed transmission b) noise free transmission c) Better load transmission d) none

589. In a right angle transmission by helical gears, the hands of the helix of the gears area) Same b) opposite c) Immaterial d) none

590. Worm drive is always self-locking a) True b) false

591. Ball bearings are not generally used in crank shafts of automobiles becausea) of high cost b)of high speed c)cannot be assembled d)none

592. Most hydrostatic bearings normally work undera) Constant flow system b) constant pressure systemc) Constant temperature system d) constant volume system

593. Bronze is used in journal bearings essential toa) Reduce friction b) reduce heat c) Eliminate oxidization d) eliminate seizing

594. The spindle of high precision cylindrical grinder is mounted ona) Ball bearing b) Taper roller bearing c) Hydrostatic bronze bearing d) needle bearing

595. To accelerate the flow of gasesa) nozzle is used b) diffuser is used c) dia of pipe to increased d) none of these will help

596. Hydraulic accumulatora) Acts as an accumulator b) acts as a storage for hydraulic energyc) Acts as a pressure relief d) none

597. When ice which is floating in water, melts, does the level to watera) go up b) go down c) remain the same.

598. Hammer blow in pipe happens due toa) friction in pipes b) change in temperature c) stoppage of flow d) none

599. Temperature rise in fluid flow causesa) reduction in viscosity b) increase in viscosity c) no effect

600. Ratio between velocity of sound and velocity of any object isa) prandtl number b) Reynolds number c) Avagadro’s number d) mach number

601. Cavitation effect in flow occurs due toa) Excess pressure b) excess temperature c) excess flow d) none

602. In electrical locomotives ultimate transmission is bya) AC Motor b) DC Shunt Motor c) DC Series Motor d) Synchronous motor

603. Geneva mechanism is used for obtaininga) Intermittent motion b) accelerating motion c) continuous motion d) none

604. Corioles component is associated witha) Displacement b) acceleration c) velocity d) none

605. Effect of increase of outside diameter of a helical compression spring on its rigidity isa) Increased rigidity b) decreased rigidity c) no effect d) dry friction

606. Jominey curve is related to the study ofa) Hydraulics b) thermodynamics c) electrical d) none

607. TTT diagram is used ina) Surface finish b) heat treatment c) stress analysis d) thermodynamics

608. Mehanite is the name given to a type ofa) Alloy steel b) granite c) nodular cast iron d) cast iron

609. Unwanted impurity in molten aluminium isa) oxygen b) carbon dioxide c) nitrogen d) hydrogen

610. Hardness in steel is a s a result ofa) martensitic structure b) pearlitic structure c) leduburetic structure d) austenitic structure

611. Carburising is donea) For blackening of high carbon steel b) for case hardening of low carbon steel c) For posthardening process to reduce internal stresses d) to increase machinability of high tensile steels

612. Piston of an IC engine is made out ofa) cast iron b)steel casting c)beryllium alloy d)aluminium alloy

613. The crank shaft of a 300 HP IC engine isa) hot forged b) shell moulded c) cold forged d) obtained through investment casting

614. A 6kg ball is suspended from two wires of equal length. The angle between the wires is 90degrees. What is the tension in each wire? a. 58.8N b. 41.6N c. 29.4N d. 83.2N

615. A 523 kg experimental rocked sted can be accelerated from rest to 1602 km/h in 1.82s. What netforce is required? a. 4.6X106N B. 4.6X105N C. 1.6X106N D. 1.3X105N

616. A force that averages 984N is applied to a 0.42kg steel ball moving at 13.8 m/s by a collision thatlasts 0.027s. If the force is in a direction opposite to the initial velocity of the ball, what is the finalspeed of the ball? A. 77.1m/s B. 63.3m/s C. 13.8m/s D. 49.5m/s

617. A stone initially at rest is dropped over the edge of a very tall building. Taking g as 10m/s2, whatwas the change in the speed of the stone building during the 4th second?A. 10m/s B. 30m/s C. 15m/s D. 40m/s

618. How long will it take a 2000w motor to lift a 320kg container vertically upwards for 26m?(g = 9.8 m/s2) A. 29s B. 6.3s C. 4.2s D. 4.1s

619. A collision between two isolated items will in generally conserveA. the total kinetic energy and the total momentum of the system.B. the total kinetic energy but not the total momentum of the system.C. the total momentum but not the total kinetic energy of the system.D. the momentum of each object.

620. What is the force exerted on a submarine window of 2m2 area, if the submarine is at a depth of2km below the surface?(the density of sea water is 1.03X103 kg/m3)A. 4.04X107N B. 4.04X104N C. 2.02X104N D. 2.02X107N

621. A body partially floats with 2/3rds of its volume under the surface of a fluid. If the density of thefluid is X kg/m3, what is the density of the body?A. 3/2 X kg/m3 B. 2/3 X kg/m3 C. 14.7 X kg/m3 D. 0.15 X kg/m3

622. How many of the following statements are true:A. the buoyant force on a body depends on the shape of the bodyB. The buoyant force on a body always acts in the same directionC. the buoyant force on a body depends on the mass of the bodyD. The buoyant force on a body depends on the density of the fluid surrounding the bodyA. only one B. only two C. only three D. only four

623. How many of the following statements may be false?A. The pressure in a fluid depends on the density of the fluid.B. The forces due to pressure in a fluid act perpendicular to the surface of a body immersed in a fluid.C. The buoyant force experienced by a body immersed in a fluid depends on the density of the bodyD. The buoyant force always acts vertically upwards on a body immersed in a fluidA. Only one B. Only two C. Only three D. All four

624. How many atoms are present in a mole of CH4?(Avagadro’s number = 6.023X1023 /mole) A. 1.2X1024 B. 3.01X1024 C. 1.2X1023 D. 6.023X1023

625. A power station generates 500MW of power and exhausts 800MW as waste heat into theenvironment. What is the efficiency of the power station?A. 61.5% B. 38.5% C. 62.5% D. 23%

626. How long does it take a 350W coffeepot to boil of 0.7L of water initially at 100°C.The latent heat of vapourisation of water = 2.1X106 J/kg.A. 6.1 min. B. 7.0 min C. 3.9 min. D. 3.1 min.

627. A 16 ohm resistor and 8 ohm resistor are connected in series across a 12V battery. What is thevoltage across each resistor respectively? A. 8V , 4V B. 4V , 8V C. 12V, 12V D. 6V, 6V

628. How many of the following statements regarding sound are true?A. Intensity depends on the square root of the amplitudeB. Loudness only depends on the intensity of a soundC. The pitch of a sound depends on the frequencyD. Sound is reflected whenever a change in acoustic impedance is encounteredA. Only one B. Only two C. Only three D. All four

629. How many of the following statements regarding light are true?A. Light travels in a straight line even when it crosses between two media of different refractive indexB. Infrared light has longer wavelength than ultra-violet lightC. Light can behave both like a ray and like a particleD. It is possible to get a real image with a concave lenses A. Only one B. Only two C. Only three D. All four

630. The pressure p in terms of its mean kinetic energy/unit volume E isa .E/3 b.E/2 c.3E/4 d.2E/3 e.5E/4

631. Convert volumetric to gravitational, relative volume of each constituent of flue gasa. %mw b. xmv c. me d. xsw e. %sw

632. Which is correct for reversible polytrophic process?a. temperature constant b. density constant c. volume constantd. entropy constant e. same heat transfer

633. If a gas or vapour allowed to expand through a minute holea. free expansion b. hyperbolic c. adiabatic expansiond. parabolic e. throttling

634. Minimum work of compressor is possible, when the adiabatic index isa.0.75 b.1 c.1.27 d.1.35 e.2

635. Under ideal condition, isothermal, isochoric, adiabatic and isobaric area. static b. dynamic c. quan-static d. stable e. thermodynamic

636. If a heat engine attains 100% efficiency, then it isA. Zeroth law b. I law c. II law d. no e. all

637. If Q1 is the heat in source, Q2 is the cold sink for heat pump then COPa. Q1 / (Q1- Q2) b. Q2 / (Q1- Q2) c. (Q1- Q2) / Q1

638. The output of diesel engine is increased ifa. more fuel b. flywheel size c. incoming air d. scavenging e. supercharging

639. Accumulation of carbon in the cylinder increases whena. decrease in volume b. volumetric efficiency c. ignition timed. effective compression ratio e. travel time

640. for same power, same speed, flywheel of petrol and diesel engine area. smaller b. greater c. equal d. none

641. If petrol is used in diesel engine, thena. higher knocking b. black smoke c. lot of fuel d. improper combustion.

642. Reciprocating compressor is used fora. large quantity of air at high pressure b. large quantity of air at low pressurec. low quantity of air at low pressure d . low quantity of air at high pressure

643. Lean relation for a. specific gravity b. dynamic viscosity

644. Centre of pressure = centre of gravity when

645. Vortex on whirlpool is due to a. cavitation b. wake c. drag

646. What it is Rupture?647. A belt drive, where pulley dia is double, and then it key length must bea. doubled b. same c. increase the critical length

648. Surface contact in motion is calleda. roll pair b. surface pair c. lower pair d. slide

649. For fluctuating load----------- is useda. ball bearing b. roll bearing c. thrust bearing d. sleeve bearing

650. In pinion and gear design, the design must be made by a. gear b. pinion c. both

651. The plate is severely deformed at a side then it grains becomesa. ductile b. malleable

652. What is recrystallation temperature?

653. What is austempering?

654. Acetylene is staid on --------- form a. liquid b. solid c. compressed

655. Tool life is concentrated on a. cutting speed b. material c. feed or depth

656. Reamer is used for

657. In an ideal gas compared to a real gas at very high pressure occupies?

658. Kinetic theory of gases assumes that collisions between the molecules are?

659. The condition of perfect vacuum that is at absolute zero pressure can be attained at?

660. Specific heat of air?

661. Which law states that internal energy is function of Temperature?

662. Minimum work done for an adiabatic process the value of n?

663. Air Refrigerator works on?

664. When crude oil heated Which Hydro carbon comes first?

665. What is the purpose of Supercharger?

666. 1Kg of carbon to CO, Amount oxygen required?

667. Horse power per tones of refrigeration?

668. Scale formation on the surface of the boiler tubes due to?

669. Axial shift in steam turbine occurs due to?

670. Latent heat of vaporization at low pressure and temperature?

671. Shaft revolving in a bearing which pair?

672. Difference between dedendum and addendum?

673. The fatigue life of a part can be improved by?

674. Rotational tendency of force?

675. The frequency of transverse vibration is 3 Hz then critical speed?

676. Advantage of V belt?

677. In gear boxes which type of key is used

678. A structural member subjected to an axial compressive force is called?

679. Pig iron is produced in which furnace?

680. Heat generation of arc welding is due to?

681. In what angle does an object thrown height will travel the longest distance?

682. Angle of contact between the journal and bearing?

683. The coupling is required to connect two parallel shaft distance between the shaft is small andvariable?

684. Carbon is added to steel to increase its hardness-True/False

685. Wings of airplane are made by Stretch forming

686. To protect from thrust which type of follower is used? Roller follower/mushroom or sphericalfollower.

687. With increase in temperature--- Viscosity of liquid--- Decreases

688. Heavy machine beds are made of CI for Vibration Damping

689. For shock resistance and vibrations we use malleable cast iron.

690. Rupture strength Load/Neck area.

691. Washer is used for increasing bearing area.

692. Surface endurance limit depends on surface finish

693. In a uniformly distributed load of 6n/m over a 5 meter length simply supported beam, the value ofB.M at the point where shear force is zero (17.5/22.5/55/75)

694. Cam size depends on (base circle/pitch circle/prime circle/none)

695. Poisons ratio is higher in (rubber/steel/wood)

696. In drill tool carbon % is (<0.4 %, 0.8% -1.6%, 1-2.5%)

697. Finishing operation in lathe is done at (low speed/high speed)

698. Degree of freedom in super structure (1/positive/negative/zero)

699. Axial compressors follow the process in ideal conditions (adiabatic/isotropic/isothermal)

700. Forced draft has negative pressure drop (true or false)

701. The key used in the gears for transmitting power (flat/saddle/spline/square)

702. Dye penetration test is (pouring/surface tension/capillary/none)

703. Poisson ratio Lateral strain/linear strain.

704. Endurance limit is depending upon Surface finish

705. in which furnace, pig iron is made blast

706. Corrosion resistant material cr and ni

707. Centipoise is unit of viscosity

708. Broaching is made to produce broaching

709. Steady rest is used for supporting long job in lathes

710. Drill angle 118 degree

711. In parson's turbine, relation between angles a1=b2, a2=b1 (a=alpha,b=beta)

712. Refrigerant used in refrigerator R 134a/ Freon

713. Composition of babbit metal? 88 % tin , 8% antimony, 4% copper

714. Cantilever beam failure of surface finish is represented by? triangle

715. At what angle in the valve timing, Diesel engine injection occurs? 20 degree before TDC

716. Name any one non destructive test? laser beam/ utrasonic

717. Clutch is located between? engine and gear box

718. What is the Melting pt of iron? 1539 degree Celsius

719. Name any one Gear material? cast iron , phosphor bronze, alloy steel , carbon steels

720. Drill material composition? 0.8% - 1.6 %

721. Which mechanism is used to hold the gear? ratchet mechanism

722. Reynolds number range for laminar flow –? for flat plate < 5*10^5 ,for pipe < 2000

723. Nusselt (for natural) number is function of which number? grashoff and prandtl number

724. Angle of contact between journal and bearing?

725. What is the function of cutting fluid? cool the tool and the work piece/lubrication/ improvessurface finish

726. Dual cycle combination of which two cycles? otto and diesel cycle

727. In screw jack --------which thread is used? square thread

728. ACME thread angle? 29 degrees

729. Frequency of a system is 3 Hz then find the speed in rpm? 180 rpm

730. For which gear shafts are co-axial? reverted gear train

731. Say true/false:a) in simple gear train every shaft is attached with one simple gear only Trueb) Radiation heat transfer is varied with T to the power of 4. true

732. The velocity of the sound depends ona. pitch b. quality and pitch c. loudness and quality and pitch d. none of the above

733. Theoretical correct air fuel ratio for petrola.6:1 b.9:1 c. 10:1 d . 15:1

734. The knock in diesel engine occursa. instantaneous and rapid traverse of first part of the charge b. Reduction of the delay periodc. instantaneous and auto ignition of the end part of the charge d. All the above

735. Ignition quality of the diesel fuel oil is measure by index no is calledA. octane b. cetene c. calorific value d. carbon no

736. Carnot cycle maximum efficiency fora. reversible engine b. irreversible c. petrol d. diesel

737. Compressed air coming out of the punctured foot ballA. attains atm temp b. remains at same temp c. becomes cooler d. becomes hotter

738. The product of EI isa. flexural rigidity b. section modulus c. polar modulus d. modulus of rupture

739. Which of the following is the thin cylinder?a. boilers b. steam pipes c. water pipes d. all the above

740. Hoop stress induced in the thin cylinder by winding it with wire under tension will bea.0 b. tensile c. compressive d. shear

741. As compared to rivet joint to welded joint has ------ strengtha. higher b. lesser c. either above d. none of the above

742. ------------ gear train is one in which each shaft call as one wheel onlya. simple b. compound c. epicyclic d. none

743. In the clock ----------gear train is used to commonly minute to houra. simple b. compound c. epicyclic d. none744. If the earth shrinks by half the radius duration of one daya. 4 hrs b.6 hrs c.12 hrs d.24 hrs

745. A tool used in cutting an external thread is calledA. twist drill b. tap c. die d. end mill

746. In ----- moulding green sand is generally used A. floor B. late C. bench D. it747. With increase in cutting speed power requirement isa. decrease linearly b. remains constant c. increase linearly d. Unpredictable.

748. What will be the locus of a point on a thread unwound from a cylinder?a. involute b. helix c. straight line d. circle

749. The ratio of no teeth to pitch circle diametera. pitch b. circular pitch c. diametrical pitch d. module

750. Difference between dedendum and addendum isa. backless b. clearance c. flank d. tooth space

751. Compare to air craft air velocity in a rocket isa. 0 b. less c. more d. same

752. -------------is suitable for space travela. turbo jet b. turbo prop c. rocket d. all the above

753. H7-h6 isa. clearance fir b. transition fit c. interference fit d. sliding fit

754. Thread angle of unified thread isa.30 b.40 c.50 d.60

755. The function of ---------------- is to transform input motion of rotation in to out put motion oftranslationa. screw b. bolt c. nut d. key

756. the most important element which control the physical property of steel isa. silicon b. manganese c. tungsten d. carbon

757. Austempering is the heat treatment process used to obtain greatera. hardness b. toughness c. softness d. brittle ness

758. Zeroth law of thermodynamics, Joule’s law, Newton’s 2nd law of rotary motion, Third law ofthermodynamics

759. Coefficient of friction is the ratio of

760. If a body is moving in a circular path, a force comes into the path, which acts along with the radiusof the circular path and is directed towards the centre of the path, what is the force?

761. Gravitational acceleration at a place is 6 times the value of gravitational acceleration at earth. Theweight of the body at that place will be

762. The acceleration of a particle moving with simple harmonic motion (SHM) is maximum,

763. Low grade fuels have

764. In case of exhaust silencer of a petrol engine is partly chocked it is likely to result in

765. Temporary hardness of water is caused by

766. Velocity ratio of a belt is

767. The compression ratio of diesel engine lies in the range of

768. For any thermodynamic process the area under T-s curve represents

769. When the load on CI engine decreases its efficiency increases. This is due to

770. Torque given by engine will be maximum when the engine

771. Decrease in engine speed from no load to full load is

772. Kinematic pair is classified as

773. Isentropic process means

774. A process in which no heat is supplied or rejected is

775. Which of the following are fire tube boilers?

776. The study that deals with man and environment is

777. What is the effect of supercharging on detonation in case of petrol engine?

778. Mode of heat transfer in which there is no change in molecular motion is

779. Effect on efficiency of carnot cycle……….

780. Question on benzon boiler & composite bar

781. In cold and hot rolling which cannot be done? Hollow circular section

782. Pearlite consists of ---------------------? ferrite and cementite

783. In Pert project time=

784. Crank rotates at 4pi radians per second, crank radius 10 cm piston velocity?

785. Path traced by a point on a double slider crank.

786. For maximum economy air fuel ratio in petrol?

787. Orthogonal cutting angle between relative velocity and

788. In grey cast iron -------- welding is used? MIG

789. For chipless machining non conventional method used ------ Laser beam machinig

790. Melting point of steel -- 1000 to1380

791. To increase toughness in steel ----- ? Nickel and vanadium

792. Notch toughness test? IZOD

793. Number of instantaneous centers in four bars mechanism? Six

794. Circle which takes the basic rolling action as that of the gear? Pitch circle

795. Gear train in gear boxes for automobile? Compound

796. Coupling used in perfectly aligned shafts? Rigid flange coupling

797. Time period of a simple pendulum?

798. Euler’s formula for buckling?

799. Cantilever beam deflection with central loading length l?

800. Efficiency of otto cycle depends on ------

801. Ratio of work and heat transfer in polytrophic process?

802. LVDT purpose?

803. Newton’s law of viscosity relatesa) shear stress and rate of deformation b) pressure, viscosity & velocityc) shear stress, viscosity and pressure

804. Fatigue life of a member can be improved by a) Polishing b) shot peening

805. Water droplets falling down assume spherical shape due to ------------ propertya) cohesion b) surface tension c) adhesion

806. Differential gear is used while turning

807. The efficient gear drive isa) helical b) spur c) worm d) bevel e) all the above

808. In a V-Belt, contact will be made only along the sides

809. Ina flour mill, -------- type of drive is used flat belt drive

810. In which process, high accuracy of hole can be achieved?a) drilling b) reaming c) broaching

811. In designing a pulley, shaft and a key, which is made weaker?a) key b)pulley c) shaft d) all have the same strength

812. In compounding of turbines, ------a) Efficiency increases b) Turbine Speed decreases c) to avoid axial shift

813. In bolt tightening, the type of load in the bolt is tensile

814. After grinding, which type of process is used to relieve stress?a) Annealing b) normality c) tempering d) no stress is induced

815. Cast Iron is used in machine bed ways for Damping Vibrations

816. Ideal fluid obeysa) Pascal’s Law b) Newtonian Law c) Bernoulli’s Principle d)Continuity Equation

817. A flat washer has more bearing area

818. Barometer is used for ---------------

819. The material whose property is same in all the materials is isotropic

820. Impact strength is an index of

821. Inventory cost depends upon ---------

822. Which of the following is not a vector quantity?a) weight b)Force c)Velocity d)Acceleration

823. Governor sensitivity w1, w2 given (w1-w2)*2/(w1+w2)

824. Boiling water nuclear plant fuel Plutonium.

825. What is the max shear force in the following?

826. Given the B.M.Diagram, what is the shear force diagram?

827. Hygrometry is used to measure the humidity

828. Buoyancy force acts in met centre of the body.

829. ORN ans. Stack in critical path.

830. Moment of Inertia of shaft pi/64 *d4

831. Rotary Compressors for what? High quantity, low pressure

832. Power of diesel engine

833. What is a function of differential?

834. Expansion of OHC

835. Speed of cam shaft half the crank shaft

836. Which process increase hardness and doesn’t decrease strength?

837. Which of following is boiler accessory?

838. PERT deals with

839. Distance between bore of cylinder and connecting rod bearing is called

840. Swirl is used to

841. Octane rating deals with

842. Motor used for starting an engine

843. DIN is formed from which country?- Germany, US, Austria, Japan

844. Break even analysis is

845. Capital expenses is

846. PERT IS _______ ORIENTED, CPM is ______ oriented

847. In Screw jack, which thread is used

848. Copper sheets are produced by

849. Nozzles are used for _____pr. And _____ velocity.

850. In 6cm cube, how many 1*2*6 blocks are formed?

851. Gantt chart is used for

852. Gang milling means

853. Slippery in ice is due to

854. why rain droplets are spherical in shape

855. why bubbles shines-due to diffraction

856. shim is associated with

857. Priming is done in __________ pump

858. Carburetor implies mixture of

859. Gear box is placed between

860. Stuffing box is used in

861. What is importance of universal motor?

862. Differential and gear box, between them which gear is used

863. Self locking screw means

864. Basic shaft should fall

865. Shaft, pulley, key is designed on the basis of keeping key weaker.

866. Brazing is used for what materials

867. 60cm wheel, 40cm wheel. First wheel moves distance with 280rev., then no of rev. then no. of rev.second wheel moves for same distance

868. Radius =10cm if it is decreased by four what is percentage reduction in area

869. Knocking in SI engine

870. Crank shaft is manufactured by

871. Hot working increases

872. Chromium when added, it increases

873. Annealing is used for improving following property. All of the above

874. Sine bar is used to measure external taper

875. Precision is ___________

876. Module is _______________

877. Rack is _______________

878. Radial distance below the PCD and base circle is ______________

879. Which gear is used for more seed reduction?

880. What type of heat transfer in radiator of automobile?

881. Why scraping of lathe bed

882. In 10MW motor, what is type of cooling?

883. Stator of induction motor, what is type of cooling

884. What is a frictionless bearing?

885. Stress induced on the cycle bearing

886. Second time of the clock increases 5m in day. What should be done on the length of the pendulumbar

887. The difference between the dry bulb and wet bulb temperature

888. Perpetual motion machine second kind

889. What are the thermoplastics?

890. Depression angle of mercury

891. If no resistance is offered in circuit- it implies

892. Power capacitor is a

893. Why Hg is used in the manometer

894. Which material used in EDM

895. Need for distributor

896. Ignition coil is represented by

897. A question on spindle taper----- ans is Morse taper

898. Velocity of fluid particle at the centre of the pipe

899. More than two support continuous beam

900. After the removal load the body does not comes to original stage instantaneously – it implies

901. Antifriction bearing ball bearing

902. Slip gauge’s lowest measurement

903. What is the ring on the bottom portion of the piston?

904. The shafts are connecting two intersecting axis universal coupling

905. II second law of thermodynamics defines ---------- (entropy)

906. Cavitation in cf pump because of low pressure

907. Priming is in cf pump

908. Carburetor mix of fuel + air

909. Carburetor principle - venturi

910. Antifriction bearing?

911. Worm gear is used for-high reduction ratio

912. Break even analysis which is considered-fixed variable

913. Capital expenditure –fixed asset

914. Straddle milling?

915. Tool signature consists of

916. State of refrigeration-condenser (in-vapour out-liquid)

917. Rivet property –it should be hard

918. In center of cf pump which will be more- a. velocity b. pressure c. both

919. In automobile battery will be specified in –volts

920. Gear box location

921. Hardness and toughness is considered while selecting a tool for m/cary and material

922. For transmitting power from gear box to wheels which joint is used-universal joint

923. Surging in compressor?

924. Oldham coupling?

925. In IC engine down rings are-oil rings

926. Water bubble having colour-total internal reflection

927. Spherical shape of droplet is because of –surface tension

928. Backlash in gear

929. Slip gauge accuracy is .001 mm

930. Beams with so many supports-continuous beam

931. Highest friction in load-taper roller

932. Axis same-flange

934. Crank shaft manufacturing –forging

935. Din tolerance-germany

936. EDM tool material

937. Power capacitor is used for

938. Parkenising and anodizing

939. In a drawer, 5 white socks and 8 black socks are there. To draw one pair of socks, minimum no ofsocks that has to be drawn? Ans.3

940. Radius of a cylinder is increased by 30%, then increase in volume will be -------(height isconstant).Ans.69%

941. The mass of a ball is 250 g and velocity is 10m/s.The potential energy at maximum height isAns.12.5 [1/2*M*V2]

942. Work done to lift 80 kg of water to a height of 30 m in 1min is Ans. 0.4 kw

943. A thin wire is subjected to tensile stress. There is no increase in resistance. Then what willhappen? Ans. Temperature remains the same.

944. Resistances in parallel.(6,10,15).Then overall resistance will be Ans.3

945. Stoichiometric combustion requires how many percentage of excess air? Ans.0%

946. The shape of the BMD in a cantilever beam will be Ans. Triangle

947. The dimensional formula for force is MLT-2

948. In connecting rod, what type of bearing is used? Ans.Needle Bearing

949. If ‘a’ is the coefficient of thermal expansion and E is young’s modulus, the-----

950. Corrosion is due to organic effect

951. Capillarity is due to Surface Tension

952. Cavitation occurs when Actual pressure of fluid < Vapour pressue of the fluid

953. At what temp, degree Celsius and Fahrenheit values are the same? -40 degree C

954. Temperature: heat is same asa) IQ: intelligence b) vote: popularityc) Ohm: Resistance d) Speed: distance

955. Cold is related to hot as loyalty to 1) Treachery 2) disgrace

956. Galvanising is coating of Zinc

957. In a Spring damper system, mass is made of quartz. What happens to frequency? 4

958. Annealing is a stress relieving process True

959. 16 C is a grade of ----- Aluminium

960. Resistance to fatigue is endurance. True

961. Relative humidity is a measure of mass of moisture in volume of vapour. False.

962. Dalton’s law-Partial pressure

963. Newton’s Law-Motion

964. Boyle’s Law-Pressure and volume relation

965. Joule’s Law-Mech. Equivalent of heat

966. Kirchoff’s Law-Electric circuit

967. Hooke’s Law-Elasticity

968. Air velocity-Anemometer

969. Stagnation pressure- pitot tube

970. Rpm- Stroboscope

971. Humidity- Hygrometer

972. Furnace temp- pyrometer

973. If a body is at -10 degree C (ice) and if it is to be converted into saturated vapour ,how much heat isnecessary?

974. According to Newtonian Law, shear stress is directly proportional to velocity gradient.

975. In casting molten metal flows through _______. (runner)

976. Which one C% is high?A. 28Cr50 B. 40Cr C. C35

977. What is the type of failure in Key that is used in Flange Coupling?

978. Spring is not subjected to Transverse shear

979. Principal Stress = 1000, -600. What is maximum shear stress?

980. Order of efficiency….. 2 Strokes SI, 4 Strokes CI

981. if Inlet air temp increases, efficiency(petrol engine) increases but compressor efficiency decreasesTrue

982. Specific energy is high?a. Turning b. drilling c. grinding d. planning

983. Dynamic loading which considerationa. Elastic limit b. Poisson ratio c. Yield strength d. Endurance limit

984. Match the following Mohrs circle - Principle stress Martensite - Hard and brittle Phase Degree of freedom - kinetics Section modulus - flexural rigidity Plastic water bottle - blow moulding

985. Which cycle uses two isentropic and two isothermal processes

986. A material is loaded still yield point and the load is removed.a. Increase in yield stress b. Decrease in yield stressc. Unchanged yield stress d. Reaches UTS

987. A thin wire is subjected to tensile load. Temperature is same. The resistance remains constant.

986. Aeroplane is flying at 800 kmph. Air temperature is zero.a. Subsonic b. Supersonic c. Sonic

987. Match Kirchoff law - electrical circuit Dalton’s law - partial pressure Hooks law - elasticity Joules law - work equivalent to heat

988. Natural gas has maximum percentage of methane

989. A perfect gasA. has zero viscosity b. has constant viscosityC. satisfies the relation PV = MRT d. incompressible

990. Density in terms of viscosity isa. kinematic viscosity/ dynamic viscosity b. dynamic viscosity/ kinematic viscosityc. kinematic viscosity x dynamic viscosity d. any of the above

991. Reynolds number for pipe flow is given by:a. VD/v b. VD µ/d c. VD?/µ d. VD/µ

992. A barometer is used to measurea. very low pressures b. very high pressuresc. pressure difference between two points d. atmospheric pressure

993. A Kaplan turbine is suitable forA. high head low discharge b. high head high dischargeC. low head low discharge d. low head high dischage

994. In a centrifugal pump installation while starting, the position of delivery valve isa. fully open b. fully closed c. half opened. d. more than half open

995. An air vessel is provided at the summit in syphon toa. regulate the flow b. increase discharge c. increase velocity d. avoid an interrupt in the flow

996. a material which recovers fully after unloading but not instantaneously is known asa. plastic b. elastic c. partially elastics d. inelastic

997. The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as a. hysteresis b. inelasticity c. creep d. boeschinger effect

998. The modulus of rigidity is defined asA. the ratio of true stress to true strain b. the ratio of shear stress to shear strainC. the ratio of longitudinal stress to longitudinal strainD. the ratio of twisting moment to cross sectional area.999. For a thin cylinder the ratio of longitudinal stress/hoop stress is a. ½ b. 1 c. 2 d. 4

1000. If two forces of magnitude P act as an angle . Their resultant will bea. 2P cos /2 b. 2Psin c. 2Pcos d. p cos 2

1001. The angle of projection of a projectile is double the angle of inclination of the plane on which aparticle is projected. The ratio of time of flights on the upward inclined plane and downward inclinedplane will be equal toa. 1/cosa b. 1/2cosa c. 1/sina d. 1/2sina

1002. The equations m d2x/dt2+cdx/dt +kx = 0 representsa. free vibration b. forced vibrationc. periodically forced vibration d. free vibrations with viscous damping

1003. While designing for screw threads care should be taken to provide adequate length of engagementfor the screw and nut threads so as to prevent failure of threads ina. tension b. compression c. torque d. shear

1004. Maximum principal stress theory in applicable forA. elastic materials B. plastic C. ductile D. brittle

1005. For traction applications, the type of motor best suited isa. induction motor b. synchronous motor c. dc shunt motor d. dc series motor

1006. A babbit isa. a eutectic of iron and iron phosphate b. a gadget for measuring volume c. a measure of magneticinduction produced in a material d. antimony bearing lead or tin alloy(ans)

1007. The blow off pressure of a safety valve isa. slightly above atmospheric pressure b. half of the boiler working pressurec. boiler working pressure d. 106% of boiler working pressure

1008. In case of a saddle keyA. the key way is cut in a shaft only b. the key way is cut in both shaft and hubC. the key is welded to shaft d. the key way is cut in hub only

1009. Splines are used whena. the power to be transmitted is high b. the power to be transmitted is lowc. the torque is high d. axial relative motion bet. Shaft and hub is necessary.

1010. A circulating water pump of a condenser is of the centrifugal type and directly connected to athree phase induction motor running at 900 rpm. The pump delivers 30000 litres per min. against thedynamic head of 10m. The horse power of the motor required to drive the pump would bea. 20-30 b. 40-50 c. 50-60 d. 60-70

1011. As per Indian boilers regulations the type of joint preferred for longitudinal joint isa. welded joint b. welded joint which cover plate c. riveted lap joint d. riveted butt joint

1012. Hydraulic testing of boilers is done at pressuresa. below and above atm. b. Slightly above atm.c. At half the working pressure of boiler d. At 1-1/2 to 2 times the working pre.

1013. Rankine formula is valid upto slenderness ratio of a. 60 b. 80 c. 100 d. 120

1014. A shaft is subjected to a torque T and bending moment M. the equivalent twisting moment wouldbe: a. (M2+T2)1/2 b. (M2+4T2)1/2 c. (4M2+T2)1/2 d. (M2+T2)1/2 + (m/2)1/2

1015. The average values of modulus of rigidity for Al, brass, copper, nickel and steel in descendingorder is Al, Ni, Br, copper, steel

1016. Resistance to fatigue of a material is measured by endurance limit.

1017. A solid shaft of 100mm dia transmits 100HP at 450/PI rpm. The torque in kg, m on the shaftwould be a. 250 b. 375 c. 500 d. 750

1018. the critical speed of a shaft is affected bya. diameter of the disc b. eccentricity c. span of the shaft d. all(ans)

1019. In order to avoid interference for 20 pressure and teeth minimum of teeth should bea. 8 b. 12 c. 16 d. more than 18

1020. The phenomenon of elongation and contraction of the bolt is know asa. slip b. creep c. fatigue d. elasticity

1021. In hydro dynamic bearingsa. the oil film pressure is generated by external pump b. the oil film pressure is generated by dead weightof shaft c. the oil film pressure is generated only when the shaft rotatesd. the oil film is sufficiently thick

1022. Which steel will have max percentage of carbon?a. C14 b. C15cr65 c. C20cr18ni20 d. C40cr40

1023. Jaw clutches a. cause shock loads when engaging b. get disengaged at high rpm c. getdisengaged in reverse direction d. are friction clutches which generate heat when engaged

1024. A body which does not contain voids or empty spaces is known asA. continuous body b. an isotropic body c. heterogeneous body d. crystalline body

1025. The limiting load beyond which the material no longer behaves elastically known asA. breaking load b. limiting load c. load bearing load capacity d. elastic limit

1026. If a body has identical properties all over it is known asA. homogeneous b. isentropic c. ductile d. elastic

1027. Cold work is done on the metalA. below the thermal critical range b. above the thermal critical range c. at zero degree centigradetemps. D. after slightly warming the metal in furnace.

1028. A plug gauge is use for measuringa. taper bores b. cylindrical bores c. spherical holes d. screw threads

1029. a master gauge is a. used by masters b. used by all mechanics c. a standard gauge checkingaccuracy of gauges used on shop floors d. a gauge used by experienced technician.

1030. In centre less grinding the work piece advanced by a. push given by operator b. hydraulic force c.force exerted by grinding wheel d. force exerted by regulating wheel (ans)

1031. In climb milling is work moves in the same direction as rotation of the cutter.

1032. The binding material used in cemented carbide tools isa. nickel b. cobalt c. chromium d. carbon

1033. A 250mm diameter is turned at a cutting speed of 20m/min feed 0.5mm per rev. of spindle at aspindle speed of 25rpm now if the dia of workpiece is double and spindle speed is also double the timetaken to turn the job will bea. Four times the original time B. double the original timeC. no change in turning time D. one fourth the original time

1034. The passage way of bringing the molten metal to the mould cavity is known as:a. piping system b. loaming system c. gating system d. entry system

1035. A third flask sometimes used between cope and drag is calleda. riddle b. middle c. fillet d. cheek

1036. Shot blasting is a. process of cleaning moulding sand b. process of cleaning core sandc. process of supplying blast of hot air to cupola d. process of cleaning casting

1037. The function of a transducer isa. to amplify the input signal b. to modify the input signal c. to convert the primary signal into a moreuseful quantity usually an electrical impulse d. to codify the input signal

1038. The method of testing hardness by brinell test is based on the principle ofa. indentation b. penetration c. rebound d. scratching

1039. In thermit welding heat is generatedA. from combustion of gases b. electric arc c. reaction of oxygen with metalD. chemical reaction involving finely divided al and iron oxide.1040. Ultrasonic machining is best suited fora. non ferrous metal b. amorphous solids c. brittle materials d. dielectrics

1041. In EDM the material of the tool is a. satellite b. diamond c. carbide d. high speed steel

1051. Bearing lining is a. bronze b. duralumin c. delta metal d. babbit

1052. The process of cutting thin gears from metal sheets is known asa. extruding b. stamping c. sintering d. rolling

1053. An optical flat works on the principle ofa. polarization of light b. refraction of light c. dispersion of light d. interference light ray

1054. The term CLA is used in connection with: a. surface hardness b. surface finishc. stresses in a component d. average speed of a gear.

1055. Dressing in foundry practice is the process of addition of chemicals to the molten metal toimprove its fluidity

1056. A steel piece after hardening is heated to 300C and then cooled in oil. The property imparted tothe steel piece will be: a. softness b. toughness c. hardness d. annealing

1057. 1 kW hour is the same asa. 1000 joules b. 1000 watt sec c. 3600 watt hours d. 3600,000 watt sec.

1058. The equipment used for pulverizing is known asa. stroker b. burner c. hopper d. ball mill

1059. If (2n-1) divisions on the main scale are equal to n divisions on the vernier scale and if S is thevalue of the smallest division, then least count would be:a. 2n/S b. S/2n-1 c. S/2n d. S/n

1060. Pipes are insulated so that a. the may not break under pressure. b. There is min. corrosion c. Theycan withstand higher fluid pressures d. Heat loss from the surface is minimized.

1061. Elements of Constantain….….

1062. Unit for dynamic viscosity…….poise

1063. What is the cutting speed of HSS single point cutting tool while machining CI a.6m/minb.11m/min c. 22m/min d. 33 m/min

1064. Definition of mach no……... inertia force/elastic force

1065. Subsonic velocity occurs when a. throat b. convergent. C. divergent d. convergent divergent

1066. Bombers are used in a. turbojet b. ramjet c. pulse jet d. turbo propeller

1067. The gradient of any hardened steel. a. marten site. B. pearlite c. austenite

1068. Symbol for total run out

1069. Symbol for pressure relief valve

1070. Escape velocity Ans: 11.2km/sec

1071. Moment of inertia of solid sphere a. 1/2 Mr2 b. 2/3 Mr2 c. 1/8 Mr2

1072. 1 stroke=--------m^2/sec.

1073. AutoCAD window (default) size

1074. 18-4-1 HSS denotes the sequence % of a) tungsten, Cr, Ve b) W, Cr, Mn

1075. 75 cm of mercury= ……………..cm of water

1076. In which process glass is machined………..a) usm b) edm c)ecm

1077. Non consumable electrode use in a) TIG b) MIG c) USM

1078. C, H2 is added in surface in which process a) carburizing b)nit riding c)cyaniding

1079. Degree of freedom of vibration system a) 0 b) 4 c) 2 d) 3

1080. The function of control rod a) absorb the Neutrons b) to prevent the radiation

1081. The fuel used in nuclear thermal power plant a) uranium b) plutonium c) thorium

1082. Compression ratio in motorcar a)5 b)16 c)7 d)13

1083. Cetene no of diesel engine for efficient operation -50, 100,1,20

1084. Hoop stresses is …….circumferential tensile stress

1085. If E is 2 times of rigidity modulus then Poisson ratio will be ----0, 2, 1, 4

1086. If diameter is double the resistance will be -----R/4, R/8, R/2, 2R

1087. Formula coriolisis component------2wr,

1088. Which one is semiconductor material -------germanium, silica

1089. The body rotates around a fixed axis the motion will be-------- rotation, circular,Translation, rotation and translation

1090. Min dia of hole that can be punched…….4TFs/Fc, 4TFc/Fs

1091. The ratio of I.P/B.P………volumetric efficiency, relative efficiency,

1092. In which gear the min axial thrust is available…..worm, herringbone, spur, helical

1093. worm gear commonly used due to ……high speed reduction, easy to M/F, low cost,low power consumption

1094. In which thread stress is induced in one direction ….ACME, buttress

1095. Use of economizer……..extract heat from flue gas, increase the efficiency

1096. PERT technical is ….target based, process based etc

1097. The value means in value Engg…………Total cost of the product, etc

1098. Backlash definition …

1099. Steam bleeding is done to ….extract steam from turbine and heat the feed water

1100. Non positive pump …….centrifugal pump

1101. When rotary compressors are used …………..high discharge low pressure, etc…..

1102. Density of water max at ………0 degree C, 4, 20, 100

1103. When walking on the ice slippery is due to ……..no friction, ice breakage, ice chill, PrIncreases melts the ice

1104. Stainless steel contains for corrosion …..Chromium, Cu, Zn, Ni.

1105. Metal regains its original position after unloading but not instantaneously……elastic,Plastic, anelastic , partially plastic

1106. For ductile material which theory of failure is used……..distortion energy theory, maxprinciple stress theory

1107. Max principle theory is used in which material?1108. For brittle materials which theory of failure?

1109. Standard time ……a) operational time+ allowance+ ideal b) normal time + allowance

1110. Work study means…….

1111. The least amount of material removed in …….lapping, honing, super finishing, grinding

1112. Glazing of grinding wheel due to …….break of bonds, break of abrasive particles,wear of abrasive particles

1113. The size of inlet valve compared to exit valve …….less, more, depending on the applications

1114. Definition for torsional rigidity …….

1115. Stiffness ……..force/unit deflection

1116. In which axis moment of inertia is less…….vertical, horizontal, central, it is not dependent on axis

1117. In case of forming the stress value is ……above yield point within ultimate strength,within proportionality, etc

1118. Spark loss in cycle …….0.1 second, 0.01 s,

1119. the ratio volumetric strain and Poisson ratio

1120. Which polymer is crystalline ………PVC, etc

1121. Shrinkage allowance is high for ……..Brass, CI, etc

1122. No of tolerance grade used in SI ……..18, 16, 21

1123. which one is correct fit indication …….50 H8/g7, H8/g7, g7/H8, H8/g7-50

1124. in which place the millimeter reading is available……Thimble, barrel , anvil, ratchet

1125. Advantage of die casting ………high productivity, high tolerance,

1126. In case of super sonic flow …….the velocity increase with decreasing area, the VIncreases with A increasing, there is no change, none of this

1127. More power required in centrifugal compressor due to …..Air leakage, air I water,Heavy liquid,

1128. Gas behaves as ideal at ……..vacuum, high Pr & High Temp, critical temp

1129. Recystalline temp of steel ………

1130. Specific heat of air…….

1131. Entropy changes with ……internal energy change, Pr & Vol change, change of state, change intemp

1132. In which process max work can be obtained….Const Vol, Const Pr, Const Temp, Const Entropy

1133. In throttling process………is const (enthalpy, entropy)

1134. Reverse joule cycle is ……….(bell coalman cycle, Rankine cycle, bray ton cycle

1135. In vernier caliper class A, B, C classification due to ……range, accuracy, L.C,

1136. Wheatstone bridge is used to measure resistance, low current, high voltage, high current

1137. Dynamometers are used to measure torque

1138. Product layout used in batch prodn, continuous prodn, efficient use of machines.

1139. The locus of the point on the circumference of the circles rolls along the straight lines without slipcycloidal path, involute, epi cycloid

1140. The rocket works on the principle of ________a. Linear moment b. angular moment c. force d. flow

1141. The basic hole is one…… lower deviation is zero, upper deviation is zero

1142. Random errors follow which curve……..hyperbolic, parabolic, causian, scatter

1143. In selective assembly, type of fit used……..string fit, wringing fit, free fit, press fit

1144. While tapping, the size of the hole is drilled…….. Equal to thread dia, less than threadDia, more than thread dia

1145. Use of differential ……….

1146. Which one has high wave length……. Alpha rays, beta rays, x rays, uv rays

1147. QS-9000 is applicable for ______ industriesa. textile b. electronics c. chemical d. automobile

1148. force which acts along the radius of the circle and away from the centre is _____a. centrifugal b. centripetal c. radial d. axial

1149. Life of the tool is affected by _______a. cutting speed b. feed c. depth of cut d. chip thickness e. all

1150. Basic tool in work study isa. stop watch b. bar chart c. process chart d. planning chart

1151. Shaft is subjected to ______ a. torsion b. bending c. axial d. any of the above

1152. Standard metric pitch of M14 is ____ a. 0.80 b. 0.85 c. 0.9 d. 0.95

1153. The cutting tool used for machining HSS is ____ a. carbide b. CBN c. satellite

1154. The parameter for process variation is _______ a. Cp b. Cpk c.pp d. ppk

1155. The system is capable when the value of Cp and Cpk is __a. 1.13 b. 1.43 c. 1.23 d. 1.33

1156. What are TPM, PPM, PPM (regarding quality) and SPM?

1157. What are BIS, APQP, ISO and PPAP?

1158. The point angle of drill is _____ a.120 b. 119 c. 118 d. 117

1159. Outer dia – (2 * module) = ________ a. inner dia b. addendum c. dedendum d. PCD

1160. Draw the symbol for Symmetry, concentricity, Perpendicularity and Circular runout.

1161. (COP) H.P = (COP) R + 1

1162. If spring is cut into two pieces the stiffness will _______ (double)

1163. Wahl stress factor…

1164. Cetene number = ___________

1165. What is brine solution?

1166. Corrosion inhibitor _____

1167. Adiabatic process is _________ ( no heat )

1168. Material for -- cylinder liner; cylinder; piston rings

1169. Compression ratio is = (Vs+ Vc)/Vc

1170. Theory of failure _____1171. What are the TQC tools? (Paretto diagram, histogram, tree shaped diagram, arrow diagram, cost &effect analysis, stratification analysis)

1172. Question on section modulus, Zeroth law of thermodynamics, TTT and stress strain diagram.

1173. The bending moment is maximum at, the shear forceA. Zero B. Changes it’s Sign C. Maximum D. None of the above

1174. The shear force max at, the bending momentA. Zero B. Changes it’s Sign C. Maximum D. None of the above

1175. The max strain energy stored in the body is called as ___________(Resilience)

1176. About proof resilience (max load acting on the spring ---)

1177. The value of Drill bit angle

1178. Another Name of Bell Coleman cycle (ans :reverse carnot cycle)

1179. Petrol dilutes at what temp?

1180. What is pour point?

1181. Pig Iron to be converted to cast iron at what temp?

1182. Chamfering is important in which operation? (Ans: threading)

1183. Which thread gives maximum grip?

1184. Angle between lathe centers? a) 30 deg b) 45 deg c) 90 deg d) 60 deg

1185. What type of material can be machined using HSS tool?(Choice : MS ,Al, Brass)

1186. A combination of pearlite and ferrite gives which type of iron?(Choice: Hard / Very hard / Soft / )

1187. Cutting fluid used for machining alloys (choice: Water, Heavy oil, Sulpurized mineral oil, Solubleoil )

1188. Petrol is rated by ___________(Ans: Octane no)

1189. Fuel consumption in IC Engines is increased due to _____________.

1190. Ultrasonic machining is done for ----(Glass ,Sintered carbide,…etc)

1191. Draught is caused by ______A. Chimney B. Mechanical Fan C. Steam jet D. All the above

1192. The steam occupied in clearance volume is called as________A. saturated steam B. Superheated steam C. Wet Steam

1193. The power produced by a Single acting engine is as compared to Double actingA. engine B. Half C. Double D. Same

1194. Which type of curve is used to represent a stream lineA. 1D B. 2D C. 3D D. None of the above

1195. The ratio of Clearance volume /Swept volume is called asA. Expansion Ratio B. Compression Ratio C. Cut – off Ratio

1196. In Vapour Absorption cycle which type of absorbent is used?A. Ammonia B. Water C. Aqua- ammonia

1197. Advantage of Vapour Absorption CycleA. Cooling rate will be increased B.Less power required

1198. If the carbon steel is heated above it’s critical temp what will happen in it’s grain sizeA. Relatively decreases B. Rapidly increase C. Increase and then decrease

1199. Gear size is measured byA. PCD B. Base circle C. Module D. All the above

1200. Cam size is depends on _____________

1201. In vapour compression cycle the min temp will be in which process.

1202. If we apply a transverse load on a beam what type of moment will be created?

1203. During radial twisting what type stress occur?

1204. In bearing in which direction the thrust occur? Axial Thrust

1205. Taper in lathe spindle?A. 1:30 B. 1:10 C. 1:15 D. 1:45.

1206. Tumbler gear mechanism used in lathe for what purpose?

1027. Which type of tool material is used for hot machining?

1208. The ratio of heat available in the furnace to the heat required to produce steam?

1209. High calorific value of coal?

1210. 1 m3 of water? (1000litre)

1211. The length of divergent portion of the cone when compared to the convergent portion in a venturimeter?

1212. One molecule of oxygen is how many times heavier than one atom of hydrogen.

1213. In diesel engine fuel distribution occurred by?

1214. For aligning two parallel shaft which type of coupling used?

1215. If we increase the compression ratio in IC engines what will happened?

1216. Critical speed of the shaft depends upon what?

1217. Torsional vibration occur when particles of body moves in which direction

1218. When two rotors mounted at the end of the shaft how many nodes will occurs?

1219. After casting which heat treatment process will be done?

1220. In alloy steel which type of cutting fluid is used?

1221. In 24 -40 meter/min cutting speed using HSS cutting tool which type of material can be machined.

1222. Material used for coating the electrode is calleda) protective layer b) binder c) slag d) deoxidizer e) flux

1223. The strength of a properly welded joint as compared to base metala)same b) more c) less d) unpredictable e) two cant be compared

1224. The surface to be machined are marked on the pattern by the following colora) Black b) yellow c) red d) blue e) green

1225. A 20 tonne press implies thata) weight of press is 20 tonnes b) press can handle works weighing upto 20 tonnes c) it can exertpressure upto 20 tonnes d) its foundation should be designed for 20 tonnes e) its turnover in a day is20 tonnes

1226. No lubricant is required when cutting threads ina)tungsten carbide b) mild steel c) titanium d) brass or castiron e) hss

1227. The difference between planner and shaper is that in former casea) tool moves over stationary work b) tool moves over reciprocating work c) tool can machine internalas well as external details d) both tool and job reciprocates e) tool is stationary and job reciprocates

1228. Powder metallurgy techniques are used in production ofa) high carbon tool steel b) HSS tools c) tungsten carbide tools d)twist drills e)ceramics

1229. Drilling is an example ofa) simple cutting b) uniform cutting c) orthogonal cutting d) oblique cutting e)intermittent cutting

1230. Reamer is used to correct thea) size and position of drilled hole b) size and roundness of hole c) finish and position of drilled holed) finish and size of drilled hole e) finish and depth of a drilled hole

1231. The operation of milling two sides of a workpiece simultaneously is calleda) gang milling b) climb milling c) square milling d) straddle milling e) end milling

1232. In which type of milling operation the chip is cut off at thinnest place and the chip thicknessincreases along chip lengtha) Up milling b) down milling c) end milling d) climb milling e) key way milling

1233. A sine bar is specified bya) Its total length b) the center distance between two rollers c)size of the rollers d) the distancebetween rollers and upper surface e) weight of sine bar

1234. Expressing a dimension as 18.3±0.02 mm is the case ofa) Unilateral tolerance b) bilateral tolerance c) limiting dimensions d) all the above e) none of theabove

1235. Gantt chart provides the information about a) material handling b) proper utilization of manpowerc) production schedule d) efficient working of machine e) all the above

1236. All welding symbol - ref: machine drawing book

1237. Father of scientific management

1238. Normalising operation is carried out ina) Furnace b) air c) water d) oil e) controlled atmosphere

1239. Pressure applied in a liquid in all directions will be given by Pascal law

1240. In Piercing and punching clearance will be applied on

1241. Permanent plastic deformation of metals under compression malleability1242. To increase corrosion resistance which will be added?

1243. Cycle used in petrol engine

1244. Use of index pulley

1245. What is resilience?

1246. M20*2 –in this 20 represents what?

1247. One question about isotropic of materials1248. Solder is an alloy consisting of tin and copper

1249. In a cantilever beam point load is applied on free end, where failure will accure

1250. Plastic deformation due to constant load at high temp creep

1251. ABC analysis deals with controlling inventory costs money

1252. Type of hatching is given you having to identify the material - ref: m/c drawing book

1253. Study about combination die, compound die and progressive die.

1254. Cavitation can be avoided in a turbine if:a. the specific speed is low b. No. of blades are kept lowc. vane length is increased keeping the vane loading the samed. Temp. of the incoming fluid is kept as high as possible

1255. Free vortex region is not suitable for low hub-tip ratio compressor stage because:a. reaction near the hub will be low b. Reac. near the hub will be highc. Specific work near the hub will be low d. relative velocity will be very high

1256. If 2 centrifugal blowers are operated in seriesa. volume flow increases, pressure remains same b. volume flow decreases, pressure increasesc. volume flow remains the same, pressure increases d. volume flow and pressure increases

1257. The specific work developed by a turbine depends on:a. peripheral speed of the impeller and the velocity of the fluid b. Density of the mediumc. peripheral speed of the wheel d. peripheral speed of the wheel and the tangential component

1258. Volute casing in a centrifugal blower is employed to:a. collect the fluid b. recover the pressure and also to collect the fluidc. to increase the velocity of the fluid d. increase the specific work of the fluid

1259. Power required to drive a centrifugal compressor is proportional to:a. speed b. cube of the speed c. square of the speed d. does not change with speed

1260. The design efficiency of the pump increases witha. increasing specific speed b. decreasing specific speedc. not effected specific speed d. decreasing specific sped and increasing density

1261. The cavitation in a hydraulic machine is namely due toa. low velocity b. low pressure c. high velocity d. high pressure

1262. Francis turbine part load conditions are obtained by:a. adjusting guide vanes b. adjusting the impeller vanes c. adjusting the impeller speed d.adjusting impeller and guide vanes

1263. Chromotograph is an apparatus used for:a. finding the colour of an object b. control flow of gases c. quantitative and qualitativeanalysis of gaseous product d. finding the density of the particle in a pneumatic conveyor

1264. The rorometer uses the following principle for fluid flow measurement:a. Const. area and variable differential pressureb. variable area and variable differential pressurec. variable area and variable viscosity d. variable area and constant differential pressure

1265. Purpose of feed water treatment is:a. prevent corrosion of steel tube b. prevent scale formation on the tubes by the dissolved impurityc. reduce boiling point of water d. obtain dry steam

1266. if a water pump develops 10 m head on earth, what would be its head if it is operated on moon:a.10/6 m c.>10 m b. 10 m d. none of above

1267. The vaccum efficiency of the condenser is the:a. ratio of partial pressure of steam to absolute vaccum b. ratio of partial pressure of steam to atm.Pressure c .ratio of vaccum developed by the condenser to absolute vaccum d .ratio of partial pressureof steam to the absolute pressure in the condenser

1268. In the temperature entropy plot:a. Constant Temp. and pressure lines are parallel b. constant volume line is steeper than the const.Pressure line c. constant volume coincides with the constant pressure line d. constant pressure lineis steeper then the constant volume line

1269. For determining the fatigue life a. Max. Principal stress is the factor b. Max. Compressivestress is the factor c. Max. Tensile stress is the factor d. Max. Shear stress is the factor

1270. 2 identical specimens one with rough surface finish and other with fine finish, having identicalsmall notches are subjected to same reverse bending load:a. life of smooth specimen is more b. life of rough specimen is morec. both will have same life d. lives are not related

1271. Rotary compressors are used for delivering:a. small quantities of air at high pressure b. large quantities of air at high pressurec. small quantities of air at low pressure d. large quantities of air at low pressure

1272. In an axial flow compressor the ratio of pressure in the rotor blades to the pressure rise in thecompressor in one stage is known as:a. work factor b. slip factor c. degree of reaction d. pressure coefficient

1273. The Kinematic viscosity is thea. ratio of absolute viscosity to the density of the liquidb. ratio of density of the liquid to the absolute viscosityc. product of the absolute viscosity and density of the liquidd. product of absolute viscosity and mass of the liquid

1274. A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order toa. slow down the speed of fast moving neutrons b. control the reac.c. reduce the temperature d. extract heat from nuclear reaction

1275. In a nozzle, the effect of supersaturation is to:a. decrease dryness fraction of steam b. decrease specific volume of steamc. increase the entropy d. increase the heat drop

1276. Elastic ratio for a material is defined as_________

1277. Raleigh flow is known as ___________

1278. The vent valve provided in a centrifugal pump is ____

1279. Volute casing in a centrifugal pump is employed to ____

1280. For a elastic material yield point is defined as ________

1281. Mohr’s theory of failure is applicable to _______ a. elastic b. brittle c. ductile d. none

1282. Rotary compressors are used for __________

1283. Heat transfer in boundary layer is due to ________

1284. Lubricating grease is a mixture of _________

1285. Kaplan turbine is used for _______- (head)

1286. _________ cycle is used for refrigeration cycle.

1287. __________ pump is used when the viscosity of the liquid is more.

1288. Centrifugal head can be increased by increasing the _____

1289. Ultimate strength in shear compared to tension is _____

1290. Kinematic viscosity is ______

1291. Enthalpy entropy diagram is ______

1292. Nuclear fusion is _____

1293. Rainbow is due to ______

1294. Vacuum efficiency of a condenser is ______1295. Francis turbine is used for _________

1296. Which is not NDT _____- ( tensile testing)

1297. PITOT TUBE is used for ______________________ (Measuring Velocity)

1298. Rotary compressor is used for_____________

1299. Hydraulic Radius is_______________

1300. Hydraulic Diameter is_________

1301. What will happen after Nuclear Fusion? to atoms join together to form on Nuclei

1302. In Grinding rotation of wheels ( Same / Opposite Direction)

1303. If __________ cycle is reversed it can be used for Refrigeration. (Carnot)

1304. In a room refrigerator operating at a full efficiency if kept open what will happen to roomtemperature?

1305. In a two tank A & B having 2 liquids Water & Kerosene .The tank A has two 1cm dia outlets andtank B has one 2 cm dia outlet. Which will empty soon?

1306. Yield point in stress strain curve is _______________

1307. Parallel flow Vs Cross flow Heat Exchanger.

1308. Cavitation can be avoided in turbine by__________

1309. Double pipe heat exchangers are preferred when?

1310. Cavitation in pipe is caused by______

1311. After the emission of alpha particles Neutron to Proton Ratio is_______

1312. ____________is used for peak load plantNuclear PP b. Solar PP c. Thermal PP d. Wind PP e. Hydel PP

1313. If earth has no atmosphere what will happen to Earth’s Temp?

1314. Wire of Resistance 10 ohm, Length is increased 3 times, Same Density, What is new resistance?(Depends on L/A ratio) Ans. 90 Ohms

1315. Transformer Primary – 4000 Turns, 2.5 kV, and Secondary – 250 V, what is no of turns inSecondary coil? (Ans. 400)

1316. Mean coil dia of the spring is 0.8 cm, No of turns 5, wire dia 0.01cm, Length of the coilis_________?(Ans. 12.6 cm)

1317. Valve used for supplying oil to the burner in the boilerIsolation Valve b. Needle Valve c. Non Return Valve d. Relief Valve e. Butterfly Valve

1318. JIT is for _________(Ans. Inventory Control)

1319. Water is flowing in a 5 cm dia pipe line at a velocity of 10 m/s, the pressure drop across orificemeter in a water line is 2 cm of Hg. If the mercury is replaced by a liquid and immiscible with water thepressure drop will be ________(Ans 17 cm)

1320. Steam separator in thermal power plant is used for________

1321. V belts touches on a) side b)both side and bottom

1322. Thermal power plant uses a) Rankine cycle b) Otto Cycle

1333. Geneva Mechanism used for a) Continuous b) intermittent

1334. Which is the poor conductor a. silver b)copper c)al d)carbon

1335. Increasing hard ness by cold working a. work hardening b. Cold hardening c. hothardening

1336. Which can be used for high speed application a. hss b. cementite carbide

1337. Gantt chart used for

1338. Permanent joint is a. rivet b. bolt c.nut

1339. Centigrade and Fahrenheit is coincide a.-40 b.32 c.-32

1340. Harden material is a. hss b. cbn c. cementite carbide

1350. When the ice melts what is the water level remains same

1360. Diesel fuel quality measures by cetene number

1361. Feet analysis used for stress analysis

1362. Bomb colorimeter used to measure the CV of a. liquid b. Solid c. solid and liquid

1363. On astembering the structure formed is bainite

1364. Testing of material in the presence of notch a) impact strength

1365. Brass is an alloy of a. cu & zinc

1366. Which can be drawn in to wires a. cu b.tin c. steel

1367. When white cast iron is cooled the product formed is a. malleable ci b. spheroidal c.Gray ci

1368. Case hardening done for a. low carbon steel b. high c steel

1369. Washers is used for

1370. Cold working is decrease fatigue strength

1371. Softest alloy of steel a. bearlite b. austentite c. martensite

1372. To reduce knocking in si engine is to add a. tetra ethyl lead b.. Methyl iso…

1373. Heating steel above appear critical temp and cooled in air is normalizing

1374. P/a = (22/7)^2*e*(l/k)^2 l/k stands for slenderness ratio

1375. Solder is an alloy of lead and tin

1376. Alloying element is added to steel a. to increase strength b. to reduce cost

1377. Coolant is used to a. increase e tool life b. Reduce heat during machining

1378. No of instantaneous center is n*(n-1)/2

1379. Cutting speed is more for a. cbn b .carbon1380. Annealing is a process of

1381. Austermpering is a process of

1382. Springs are connected in parallel 1/k=1/k1+1/k2+…

1383. Antifriction bearing is

1384. Powder metallurgy is done by

1385. ISO 9001stands for

1386. A core drill is done in previously drilled hole

1387. In compound drawing ‘O’ refers toa.) Circularity b.) Concentricity. C.) cylindrical d.) None

1388. in engineering drawing one has to checka.)Dimensional accuracy b.) Errors c.) Neatness d.) all

1389. Wankel engine is rotary engine

1391. In a rectangle diagonal are 410. Area cannot be determined.

1392. Major composition of stainless steel is Chromium.

1393. Sand is mainly Silicon dioxide.

1394. A pair of dice is thrown. What is the probability of getting sum of odd numbers?(Answer - 0.5)

1395. Austenite constitutes Gamma iron

1396. Thermal conductivity of steel is greater than cast iron

1397. Fixture is work holding device

1398. Density of steel is less than cast iron.

1399. Value of Pi is 22/7or 3.1416

1400. Max. deflection of a beam with U.D.L in simply supported beam WL3 / (48EI)

1401. Coupling of right hand & left hand thread turn buckle.

1402. Critical speed of shaft depends on natural frequency.

1403. Surface hardening is done by (carbursing, nitriding, flame hardening,)Answer-all

1404. 8 men and 4 women 4 task finished in 16 hours. 4 men 8 women 7task finished in 32hours. How many men are required to commit 3 tasks in 8 hours? 16 men

1405. In a class 28% are from other states. Of remaining 25% are from rural areas. What is thepercentage of students who come from urban area? 51%

1406. A tractor costs rupees 2 lakhs. Given a loan at 16% rate of interest at margin of 25%. He paysRs.40, 000 after one year. How much is the balance. Rs.1, 34,000

1407. A train is moving away from the stationary man at 33 m/s with a frequency of 1200 Hz. What isthe observed frequency if the velocity of sound is 330 m/s? 1090 Hz

1408. What is meant by super elevation? (Rail elevation)

1409. Size of a room is 4m X 3.5m X 3m. How many box of size 21cm X 25cm X 25cm can be stacked?3200 boxes

1410. If a principal amount is doubled in 8 years in compound interest, what is the ratio of interest? 9%

1411. A stone is dropped from a height. It’s velocity depends on height

1412. Damping force in freely vibrating with negligible velocity and directly proportional todisplacement.

1413. External threading can be done bya.) Milling b.) Rolling c.) Single point tool d.) all above.

1414. If an Exponential is ex =0.25. In exponential distribution average value is x.log 0.25.

1415. Size of the bolted joint depends on tension.

1416. Gear hobbing is used for all type of gears not bevel gears.

1417. Front and side view of an object is triangle. Cone and pyramid.

1418. External thread cutting is done with cutting and forming

1419. Boat running in a still water at 15km/hr upstream crosses 40km (refer)

1420. Velocity of a planet when it is nearest to star is 10 km/s farthest velocity is 2.5km/hr. ratio of thefarthest to nearest distance is 1:4.

1421. A crank pressure is maximum at ¾ of the stroke

1422. Mechanical dimension is length, mass & time

1423. In Rockwell hardness machine in which scale maximum load can be applied A, B , C 50 an 150kg C scale

1424. What is Trepanning? Making large holes by removing metal along the circumference of ahollow cutting tool

1425. Which is important for drawing a gear a. base circle b. pitch circle c. all the above.

1426. Hardenability means Ease with which the material can be hardened

1427. Gear system in which axial thrust is absent. Herringbone

1428. In which casting complex shapes can be made? Investment Casting

1429. Inert gas is used in which types of welding TIG / MIG

1430. Function of a Differential Gear to allow rotational speed variation of a wheel while taking aturn

1431. Which is superfinishing operation a. planning b-Honing c, shaper d. End milling

1432. Difference between nut and screw. Nut can be used in through hole but Screw can not be usedin through hole & Nut can be used only along with the bolt but screw need not be.

1433. What is stud? Used for aligning components. It is screwed to one of the part

1434. Normal value of voltage in spark plug & distributor function. 10 to 20000 V

1435. What do you understand by Wankel engine? Wankel engine – Rotory Engine (No Pistons)

1436. Lubricating grease consists ofa. fatty oil, mineral oil,& additives b. fatty oil, soap & additivesc. mineral oil, soap & additives d. mineral oil and additives.

1437. In which of the following work piece moves and tool remains stationarya. Planing b. shaping c. milling d. drilling.

1438. Which tool has multiple cutting edges? Miller / Broaching tool

1439. Seamless pipe is made by ___________ process. Extrusion

1440. Meaning of overdrive. Speed of the driven member is greater than the prime mover

1441. What is ISO 9000 standard for quality. Quality Management & Quality Assurance standards

1442. Unit of surface tension. N/m

1443. Which pipe material is used for carrying corrosive liquid?a. stainless steel b.nickel pipe c. chromium pipe

1444. For batch production of automotive components which lathe is preferreda. captive lathe b. turret lathe c. CNC

1445. In centre less grinding the two wheels rotates ina. same direction b. opp direction

1446. To get deep hole in less tensile strength material which drilling is preferred step drilling

1447. Definition of Broach? Process of producing keyways or slots in a single stroke

1448. In which part of the lathe the honing operation is done? a. chuck b. lathe bed c. tail stock

1449. What is the thread angle for ACME thread? 290

1450. Which diameter is kept in mind while roughing the top face of gear teeth?

a. pitch b. base circle c. addendum d. deddendum.

1451. Which is ferrous material? a. inconel b. carbon steel c. monel

1452. What is lapping? Super finishing process to obtain good surface finish

1453. The axial stress on a member which is subjected to a sudden load when compared to load appliedgradually is a. same b. double c. half d. quadraple

1454. Annealing affects which property of materiala. ductility b. hardness c. machinability d. both b& c

1455. Austempering affects what property of material. Improve toughness & Ductility

1456. Which process cannot be used to produce external threads?forging b. Rolling c. milling d. turning

1457. The crystalline structure of graphite isa. Simple cubic b. FCC c. BCC d. HCP

1458. JIT means: Just In Time - inventory control

1459. Manometer sensitivity of a given area depends on cross section area at that point

1460. Which of the following has lowest thermal conductivity?a. steel b. SS c. Bronze d. copper

1461. Dissimilar metals can be joint by a. brazing b. welding c. soldering

1462. Tapering of deadend of tailstock is measured bya. taper gauge b. sine bar c. vernier d. ring gauge

1463. Hygrometry deals with Moisture content in air

1464. Which material has the highest Cp value? a. air b. water c. copper

1465. Relation between gauge, abs & atm pressuresAbs pressure = Atmospheric Pressure + Gauge Pressure

1466. An object weighs 3kg in air, 2.5kg in water, what is its density?

1467. Time study deals with Time taken to complete one operation

1468. Expand MIS Management Information System

1469. CPM and PERT deals with determining the status of the project

1470. To avoid cavitation in a centrifugal pump Inlet pressure should be high

1471. Expand NTP Normal temperature and press

1472. Dalton’s law of pressure Total pressure equals sum of partial pressures

1473. What is Avogadro’s hypothesis Molecular wt of all gases occupy the same volume under sameconditions of temp and pressure.

1474. What is the use of intercooler? to reduce work input

1475. What is the use of after cooler? To reduce volume of receiver

1476. Water hammer occurs due to sudden obstruction in flow

1477. ABC analysis deals with Inventory Control

1478. Main objective behind plant layout is to avoid back tracking

1479. Efficiency of diesel engine as compared to petrol engine under same rated load High

1480. Which of the following is not present in a CI engine a. Fuel injector b. Carburetor c. Fuel pump1481. Which of the following is not present in a SI engine a. Spark plug b. Carburetor c. Fuel injector

1482. What is pour point? Min temp. at which a liquid flows at set condition

1483. Zeroth law of thermodynamics when two bodies are in thermal equilibrium individually withthe third body the two bodies are in thermal equilibrium with each other

1484. In value engineering “value” means Functional or Utility / Cost

1485. What is Mach no c/a

1486. Output=9kW, Input=30kW, Efficiency=? 30%

1487. Overall hear transfer co-eff. Present in Conduction and convection

1488. Definition of Orifice provision for flow of liquid with regulation

1489. What is Break even point. No profit and no loss

1490. If a block of ice floating in a tub of water and gets melted then what will be the level of watera. falls down b. rises c. remains the same

1491. Compressed air coming out of a punctured footballa. Remains at the same temperature b. Becomes hotter c. Becomes cooler

1492. Heat transfer takes place as per a. Second law b. First law c. Zeroth law

1493. Choking in compressor means fixed mass flow rate independent of the pressure ratio

1494. Formation of frost in refrigerator Immaterial

1495. Supercharging is the process of increasing the density of the inlet charge

1496. How will you find the unburnt mixture in exhaust gas? Analyzing Oxygen

1497. Compression ratio is the ratio of Delivery pr. to inlet pr.

1498. What is the material used in permanent magnet? ALNICO

1499. Critical activity has Zero float

1500. At what temperature °C and °F are the same?

1501. 1 kW-hr = 3600 kJ.

1502. Which process is more effective for compression? isothermal

1503. What did W.H. Taylor do? Taylor theory of gauging

1504. An adiabatic compression is one in which no heat enters or leaves the system

1505. What happens if the refrigerator doors are kept open? The room will be warmed up gradually

1506. In which device, the temp of the refrigerant is the LowesCompressor b. Condenser c. Expansion valve d. Evaporator

1507. In break even analysis, profit occurs when sales revenue >total cost

1508. A material piece weighs 2.5 kg in air and 3 kg, when immersed in water, then sp.gr is2.5 / 3

1509. A body of sp.gr 7 is immersed in Hg of sp.gr 13.6. What percent of the body will be immersed inwater? 0.515

1510. 1 tonne of refrigeration is the cooling effect produced when melting one tonne of ice

1511. Unit of power in SI System. Watt

1512. Which of the following does not form a real image?Concave b. Convex c. telescope d. microscope

1513. What is the use of Rota meter? Flow measurement

1514. If we use petrol in diesel engine lot of fuel will remain unburnt

1515. The intake of air in an air compressor can be had from Atm air maintained at 1°C

1516. If v=220V, I=25A, power factor=0.8, freq=400Hz. If the motor runs for 3 hrs, what is the powerconsumed?

1517. Power stroke in diesel cycle is what process? Adiabatic process

1518. Boiling point of mercury?

1519. When salt is added to water, what happens to its freezing point? Increases

1520. What motor do they use in railway engines for traction? DC Series motor

1521. What motor is used for running lathe spindle? AC Motor

1522. Type of magnetic material used for small motors. ferromagnetic

1523. If the barometer shows 300mm Hg, what is the absolute pressure?

1524. Which gear type does not have axial thrust? Herringbone

1525. Which of the following is not a thermal radiation law? Lamberts law

1526. In which units sound is measured? Decibels

1527. Velocity of sound at sea level?

1528. Which of the following is formed due to the attraction between moon and earth? Tides

1529. Instrument used for measurement of high temperatures? Pyrometer

1530. Thread used in lathe lead screw? ACME Thread

1531. If two forces of magnitude P act as an angle$. Their resultant will bea. 2P cos /2 b. 2P sin c. 2P cos d. P cos2

1532. The angle of projection of a projectile is double the angle of inclination of the plane on which aparticle is projected. The ratio of time of flights on the upward inclined plane and downward inclinedplane will be equal toa. 1/cosa b. 1/2cosa c. 1/sina d. 1/2sina

1533. The center of gravity of circular cone lies on the axis at a height from base:a. H/4 b. H/3 c. 3h/4 d. 3h/5

1534. The slope of constant pressure line on temperature entropy diagram is give bya. S/T b. T/S c. Cf/T d. T/Cf

1535. The fact that the product of pressure and volume of a fixed amount of gas is of approximatelyconstant value is known as:a. Charle’s law b. Gay lussac’s law c. Dalatons law d. None of the these

1536. The net work done in a polytrophic process is equal to? P1V1 – P2V2/(n-1)

1537. For a reversible adiabatic process the change in entropy isa. Zero b. Minimum c. Maximum d. Infinite

1538. Otto cycle consists of the set of processes asa. Two isentropic and two constant volumes b. Two isentropic and two constant pressures.c. Two adiabatic and two isothermal d. Two isothermal and two constant volumes.

1539. In a 2 stroke engine we get one power stroke ina. 180 degree of crank rotation b. 270 degree of rotationc. 360 degree of crank rotation d. 540 degree of crank rotation

1540. Latent heat isa. Heat that does not follow first law of thermo dynamicsb. Heat required to change the substance from solid to gaseous statec. Heat required to change the state of substance from liquid state to solid stated. Heat required to change the state or condition under which the substance exists

1541. The vapour pressure is related to the enthalpy of vaporization in;a. Clausius clapeyron equation b. Henrys law c. Raoults law d. Maxwell’s equation

1542. An optical pyrometer work on the principle ofa. Expansion of fluids b. Change of electrical resistancec. Thermo electric effect d. Mono chromatic radiation

1543. Octane number of petrol generally available is in the rangea. 10-25 b. 25-60 c. 20-75 d. 80-100

1544. On a psychometric chart sensible heating or cooling is represented by:a. A horizontal line b. A vertical line c. Inclined line d. Curved line

1545. Dry ice isa. Free from water b. Free from dissolved air or gasesc. Does not contain impurities d. Solidified form of carbon dioxide

1546. A diffuser is used toa. Increase velocity and decrease pressure b. Increase velocity as well as pressurec. Decrease velocity and increase pressure d. Decrease velocity as well as pressure

1547. Air fuel ratio for a gas turbine is closer to a. 10:1 b. 15:1 c. 20:1 d. 60:1

1548. Chocking isa. Variation of mass flow rate in proportion to pressure rationb. Variation of mass flow rate in inverse proportion to pressure rationc. Fixed mass flow rate regardless of pressure rationd. None of these

1549. Kinematics of machines deals witha. Apparatus for applying mechanical powerb. Number of inter related partsc. The forces acting on the parts of the machined. The relative motion between the parts neglecting the consideration of the force.

1550. Dynamic of machines deals witha. The relative motion between the parts, neglecting the consideration of forcesb. The forces acting on the parts of the machine.c. The apparatus for applying mechanical powerd. The number of inter related parts, each having a definite motion

1551. A cycle chain is a kinematic chaina. Yes b. No c. Yes, provided the links are limited in numberd. Yes, provided the distance is limited

1552. The total number of instantaneous centers for a mechanism of n links is :a. N b. N/2 c. N(n-1) d. N(n-1)/2.

1553. The number of links in a pantograph is equal toa. 3 b. 5 c. 4 d. 6

1554. In a cam and follower mechanism, for the uniform velocity of the follower, the displacementcurve will havea. No slope b. Constant slope.c. Slope in positive direction only d. Slope in both positive and negative direction

1555. A point on a link connecting double slider crank chain traces aa. Straight line path b. Circular path c. Parabolic path d. Elliptical path

1556. The number of instantaneous centers for a four bar chain mechanism would bea. 3 b. 4 c. 5 d. 6

1557. The maximum efficiency along an inclined plane is? 1- sin?/1+sin?

1558. Can simple band brake be made self energizing typea. Yes b. Yes, but with few limitationsc. Yes, but will require several modifications d. No

1559. The function of a governor isa. To control the engine speed b. To maintain the speed of engine constantc. To maintain constant piston speed of engined. To maintain the speed of an engine within prescribed limits of varying loadconditions

1560. If n1 and n2 are the max. And min. Equ. Speeds then sensitiveness of governor would be a.N1+n2/2n1 b. N1+n2/2n2 c. N1-n2/2n1 d. N1-n2/2(n1+n2)

1561. The advantages of involute profile over cycloidal are given below. Identity if there is any incorrectstatementa. The straight the teeth of the basic rack for the involute profile admits of simple toolsb. The profile for the flank and face is a single curve in the involute systemc. The variation in the center distance within limits does not affect the two mating gears in the involutesystem d. The interference is inherently absent in this system

1562. The differential gear in the automobiles is used toa. Reduce speed b. Assist in changing speedc. Provide jerk free movement of vehicle d. Help in turning

1563. A vibrometera. Indicates vibration amplitude b. Indicated vibration frequencyc. Indicates nature of vibrations d. Only indicates second and above harmonics

1564. Hammer blow in locomotives resultsa. Pulsating torque b. Uniform torquec. Tendency to lift wheel from rails d. Uneven speed

1565. Simply supported beam of length L with a concentrated load acting on the mid span. If the massof beam is negligible compared to the mass acting, the naturall frequency of the system would be?(48EI/ml3)1/2

1566. The abbreviation P.I.V. drive system stands fora. Polar inertia Vee belt b. Purely intergral variancec. Perfectly induced velocities d. Positive infinitely variable

1567. A swinging field type dynamometer isa. Torsion dynamometer b. Transmission type dynamometerc. Friction dynamometer d. Electrical dynamometer

1568. What is the process used to get soft core and hard case? Case Carburizing

1569. By which process we get more hard and wear resistant surface?a. Nitriding b. Chrome plating

1570. What is the formula for output power? 2πNT/60000

1571. Radius of gyration is proportional to….a. 1/m b. m c. sq. root of m/a d. sq.root of I/m Ans. d

1572. How to increase the surface finish?a. increase speed of work piece b. Increase depth of cut c. Both

1573. Allowance given in casting is to accommodate taper….. Distortion

1574. Material for machine bed? CI

1575. Material of aircraft wings? Aluminium

1576. Based on which factor(s) we have to select a bearing? Comp & Fatigue strength.

1577. Modulus of elasticity? Stress/Strain

1578. Which of the following material has anisotropic property? Aluminium

1579. Shaft diameter depends on______________

1580. Stroboscope is used for measuring?a. Rpm of the spur gear. b. Temperature calibration. c. Velocity of the reciprocating engine. d. All theabove. e. None of the above.

1581. A ball tied at the end of a flexible inelastic string of length l is making S.H.M in vertical plane. Atthe mean position the mass has Max K.E and min. P.E

1582. A block of steel is loaded by a tangential force on its top surface while the bottom surface is heldrigidly. The deformation of block is due to shear only

1583. Controlling force in a centrifugal type of governor is provided only by combination of deadweight and spring

1584. The bolts in a flange coupling are designed under shearing stress caused by torque transmitted

1585. The advantage offered by multiple plate clutches as compared to single plate clutch is less radialspace requirement

1586. The cost of mechanical drives increases in this order flat belt, v-belt, chain, Gear

1587. The density of fluid varies with change of temperature

1588. A soap bubble has a spherical shape because a sphere will have minimum surface area for agiven volume

1589. A liquid in atm of air begins to boil when vapour pre. Of liquid slightly exceeds the airpressure

1590. The phenomenon of surface tension of liquid causes liquid surface to contact

1591. Mercury is used as barometric fluid because of its high density

1592. Variations of pressure and volume at constant temperature are correlate through

1593. A gas is so expanded in a cylinder that its temperature remains constant. Several values ofpressure and volume are recorded. Volume is plotted as ordinate and inverse of pressure as abscissa. Theresulting curve will be

1594. An engine receives 15152J/s of heat and produces 5kW of power. The efficiency of the engine is27.5

1595. An engine operating on diesel cycle is more efficient than an engine operating on otto cyclebecause compression ratio is higher in diesel engine than in engine operating on otto cycle

1596. The entropy principle states that the entropy of an isolated system remains constant

1597. H7-h6 isa. clearance fir b. transition fit c. interference fit d. sliding fit1598. Thread can be formed by all process excepta. Forging b. rolling c. Milling d. Turning

1599. Thread used in screw jack, lead screw?

1600. Which is not related to thermal radiation?a. planck law b. steffan boltzmann law c. Fourier law

1601. Radiator type used in bus?

1602. Definitions of normalizing, tempering, quenching, etc.

1603. Normal hardness value of cast iron used in lathe bed. In BHN

1604. In which process material is not removed? a. punching b. coining c. tapping d. embossing

1605. Which type of transmission drive is Noiseless – (Belt drive/ Gear/ Chain)

1606. Which type of gear gives less noise? (Worm / Helical / Spur)

1607. Relation between speed & diameter.

1608. Which is more thicker? (SWG10, SWG16, SWG20)

1609. Which bearing can withstand both thrust & radial?

1610. What type welding is used for Aluminum?

1611. Critical stress of column is proportional to?

1612. __________allowance is allowed in taper castings.

1613. Toughness is a measure of ….….?

1614. Deflection of spring is predominantly due to spring index.

1615. How will you measure the Hardness of Rubber (Vickers / Brinell)

1616. What type of material is used for machine bed?

1617. Which of the following is antistatic material? (MS / Steel / Brass / Al)

1618. Carbon is added to steel-to increase? Hardness

1619. Guideways are hardened by which hardening method?

1620. Carbon is added to engine parts to enhance-------- property.

1621. A metal has K temp gradient and 2K for another metal. If a hot fluid is passed through a pipe thepipe should be made up ofa. K inside, 2K outside. b. 2K inside, K outside c. Any of the above d. None of the above.

1622. Crowning of pulley is done for?

1623. If temp increases viscosity of gas & liquid ---------------.

1624.. Shear angle in press tool? To avoid burr, easy shear