MODEL QUESTION PAPER

SUBJECT CODE 3001(REV2015)

THIRD SEMESTER DIPLOMA EXAMINATION IN ENGINEERING

ENVIRONMENTAL SCIENCE AND DISASTER MANAGEMENT

COMMON TO ALL

TIME 3 HOURS

MAXIMUM :100 MARKS

PART A

(Maximum 10 marks)

I. Answer the following questions in one or two sentences. Each one carries two marks. 1. Define mining 2. What is the concept of ecosystem 3. List any two causes of pollution 4. What do you meant by risk management 5. Expand MAH

5X2=10

PART B

(maximum 30 marks)

II

Answer any five full

Questions. Each one carries 6 marks.

1. List any six the causes of deforestation 2. Illustrate characteristics of Aquatic ecosystem 3. State the global effect of nuclear radiation 4. Write short notes on ecological pyramid with figure 5. Explain hazards zonation map 6. Describe the role an individual in conservation of forest 7. Establish the relationship between disaster and development

PART C

MAXIMUM 60 MARKS

ANSWER ONE FULL QUESTION FROM EACH UNIT. EACH ONE CARRIES 15 MARKS

UNIT 1

III

a) State the importance of water as a resource 7

b) Describe the impact due to large dams 8

OR

IV

a) Mention the problems associated with fertiliser and pesticides in agriculture 7

b) Write a note on soil erosion 8

UNIT 2

V

a) Explain and draw ecological pyramid 7

b) Differentiate between biotic and abiotic components 8

OR

VI

a) Distinguish among afforestation, reforestation, and deforestation 7

b) Explain with the help of a food chain when biological magnification of harmful chemicals occurs 8

UNIT 3

VII

a) Enumerate the causes of air pollution 7

b) How local water pollution contribute to the global pollution 8

OR

VIII

a) Identify various sources of solid wastes 7

b) What are the effect of nuclear pollution 8

UNIT 4

IX

a) What are the different phases of disaster management 7

b) List some adverse effect of drought 8

OR

X

a) Explain health and disaster management plan 7

b) Write short note on disaster reduction 8

TED (15) - 3021 Reg. No............................................ (RE VISION — 2015) Signature...............................................

MODEL QUESTION PAPER

THIRD SEMESTER DIPLOMA EXAMINAHON IN ENGINEERING/ TECHNOLOGY - OCTOBER, 2016

ELECTRICAL AND ELECTRONICS ENGINEERING

(Common for MH, AU and TD)

[Time: 3 hours (Maximum marks : 100)

PART—A (Maximum marks : 10)

Marks

I Answer the following questions in one or two sentences. Each question carries 2 marks.

1. Define form factor

2. Define Ampere hour efficiency of a lead acid cell.

3. Give any two application of induction motor

4. List two types of moving iron instrument

5. Draw the symbol of NOR gate and develop the truth table.

(5X2=10)

PA RT—B (Maximum marks : 30)

II Answer any five questions. Each question carries 6 marks.

1. Show the effective resistance when three resistors are connected in

(a) series (b) parallel

2. Summarizes the advantages of a 3-phase system over single phase system

3. Draw 3 point Starter and mark necessary parts

4. Differentiate the welding transformer and power transformer

5. With necessary figure, explain the constructional details of Moving Iron instruments

6. Distinguish different types of capacitors

7. Summarize the need of automation

(5X6=30)

PART—C (Maximum marks : 60)

(Answer one full question from each module. Each question carries 15 marks.)

Module - I

III a) A resistor of 3 Ω is connected in parallel with a resistor of 6 Ω. In series with the parallel

combination is a 8Ω resistor and applied a 20V to the circuit. Compute the effective

resistance, current and power in the circuit 8

b) Describe the methods of charging of lead acid cell. 7

OR

IV a) Explain the classification of D.C. generators based on field connection 8

b) Describe the power generation of three phase system. 7

Module - II

V a) Explain the working principle of single phase capacitor run induction motor

8

b) Determine the e.m.f equation of transformer.

7

OR

VI a) Explain the constructional details of single phase induction motor 8

b) Describe the principle of working of D C Motors 7

Module - III

V a) Explain working principle of dynamometer types wattmeter 8

b) Explain the principle of induction heating. 7

OR

VI a) Explain the constructional details of Moving Coil instruments. 8

b) Explain the principle of induction heating. 7

Module - IV

V a) Draw and explain working of full wave bridge rectifier 8

b) List the applications of control system 7

OR

VI a) Explain the working principle of SCR. 8

b) Describe the working of PN junction diode. 7

MODEL

TED(15) 3024 Reg. No. ………………….

(REVISION -2015) Signature…………………..

THIRD SEMESTER DIPLOMA EXAMINATION IN ENGINEERING / TECHNOLOGY

MACHINE DRAWING

[Time:3 hours

(Maximum marks: 100)

[Note: - 1. All dimensions are in mm

2. First angle projections is to be followed

3. Missing data if any may be suitably assumed

4. Both sides of the drawing sheet may be used

5. Sketches accompanied. ]

Marks

MODULE- I

I Draw the profile of the following thread forms of pitch 30 mm

a) Square thread b) British standard withworth (BSW) 15

OR

II Draw the following rivet heads in proportion dimensions.

a) Snap head b)pan head c) flat and countersunk head 15

MODULE II

III An isometric view of a socket and spigot joint shown in Fig I . Draw top half sectional

elevation and end view from left side.

30

OR

IV An isometric view of a flanged couplingunprotected type sown in Fig. II . Draw the top half

sectional elevation and end view from right side 30

MODULE III

V Detailed view of a stuffing box is given in Figure III. Assemble the parts and draw right half

sectional elevation and prepare the bill of material 40

OR

VI Detailed views of a Plummer block shown in figure IV. Assemble the parts and draw left half

sectional front view and top view. Prepare the bill of material. 40

MODULE IV

VII Draw the following welded joints

a) Butt joint

b) Lap joint

c) Tee joint

d) Corner joint

e) Edge joint 15

OR

VIII Draw the double line orthographic symbol of the following pipe fittings

a) 450 Elbow

b) Tee

c) Cross

d) Dead end

e) Union 15

-----------------------

Fig . I Socket and spigot joint

Fig.II Flanged coupling (Un protected type)

Fig. III Details of stuffing box

Fig. IV Details of Plummer block

MODEL QUESTION PAPER

TED(15)3051 THIRD SEMESTER DIPLOMA EXAMINATION IN AUTOMOBILE ENGINEERIMG

Revision 2015

FLUID MECHANICS AND MACHINERY

Max.marks 100 Time 3 Hrs.

PART A

(Maximum Marks 10)

I Answer the following questions in one or two sentences.

1. Define kinematic viscosity.

2. State Newton’s equation for viscosity.

3.Define slip of a reciprocating pump.

4 Name any two pneumatic actuators.

5. Define flash point. (2 x5=10)

PART B

(Max. marks 30)

II (Answer any five of the following questions. Each question carries 6marks)

1. List any six properties of fluids.

2. Explain the different methods of pressure measurement.

3. List and explain different types of losses inflowthrough pipes.

4. Explain the classifications of orifices.

5. Explain the working of centrifugal pump with a sketch.

6. Compare pneumatic system and hydraulic system.

7. Explain the working of a poppet valve. (6 x 5= 30)

PART C

(Max.marks 60)

(Answer any one full question from each unit)

UNIT I

III (a)A differential manometer is used to connect two pipes A and B. The pipe A contains a liquid of Sp.

Gravity 1.1 under a pressure of 150kN/m2.The left limb of the manometer is connected to pipe A which

is1.6 meter above the pipe B. The pipe B contains oil of Sp.gravity 0.8 under a pressure of 250kN/m2

.The level of mercury in the left limb is 1.5m below level of pipe B the level of mercury in the right limb

is below to that in the left limb. Find the difference between the mercury levels. (8)

b. Differentiate between simple and differential manometers. (7)

OR

IV (a)Distinguish the terms atmospheric pressure, gauge pressure, vacuum pressure and absolute

pressure.(8)

(b) If 5m3 of oil weighs kN, calculate its specific weight, specific volume, mass density and relative

density (7)

UNIT II

V(a) A horizontal venturimeter is provided in a pipeline 300mm diameter carrying oil of Sp. Gravity

0.8.The throat diameter is 150mm.If the differential manometer gives a reading of 250mm of mercury

find the discharge in liters per second. Assume coefficient of discharge as 97 (8)

(b)State and explain Bernoulli’s theorem.(7)

OR

VI (a) Explain different types of fluid flow (8)

(b) A pipe 500m long pipe is conveying waterwith a velocity of 10 m/s.Find the

Suitable diameter of the pipe if the head loss due to friction is 3.4m.Take f =0-001 (7)

UNIT III

VII (a) A double acting reciprocating pump has a stroke 300 mm, piston diameter 150mm, delivery head

20m and suction head 3m. If the pump is working at 60 rpm the actual and theoretical power required

to drive the pump, assume the efficiency as 75%. (8)

(b) Explain with sketch the working of multistage pumps. (7)

OR

VII(a) Explain the working of a lobe pump with a neat sketch (8)

(b) Explain different efficiencies of a pump. (7)

UNIT IV

IX(a) Explain the basic components of a hydraulic system with a neat diagram (8)

(b) Describe the working of an air filter in air line. (7)

OR

X(a) Explain the operation of a manually operated three way valve (8)

(b) Explain the working of a solenoid operated valve. (7)

TED (15) 3052 Reg. No…………………

REVISION 2015 Signature……………………

MODEL QUESTION PAPER

THIRD SEMESTER DIPLOMA EXAMINATION IN AUTOMOBILE ENGINEERING

PRODUCTION PROCESS OF AUTOMOBILE COMPONENTS Time-3hrs

Max marks: 100

PART-A

(Answer all questions in one or two sentences. Each question carries 2

marks )

I

1 State the purpose of machining allowance.

2 Name the types of pressure die casting.

3 Define closed die forging.

4 List the two basic types of welding.

5 Define shaping process.

(5 x 2)

PART-B

(Answer any five questions. Each question carries 6 marks)

II

1 Write short notes on metal patterns.

2 List six properties of moulding sand

3 Explain the Bessemer proccss with figure.

4 With the help of sketch explain tube extrusion?

5 List any 4 comparisons between dry sand moulding and green sand

moulding

6 Write the advantages and disadvantages of arc welding,

7 Write short notes on ‘Flexible Manfacturing Systems’

(5 x 6)

PART-C

MODULE-I

(Answer one full question from each module. Each question carries 15

marks)

III

1 Describe the moulding procedure. 8

2 Describe the Hot Chamber Die Casting with figure. 7

OR

IV

1 Explain the shell moulding process with neat sketch and list its

advantages

8

2 List the requirements of a good pattern material. 7

MODULE-II

V

1 Explain the Bessemer process of steel making with neat sketch. 8

2 Describe direct extrusion 7

OR

VI

1 Compare hot rolling and cold rolling. 8

2 List advantages of forging. 7

MODULE-III

VII

1 Write a note about seam welding. 8

2 Discuss about the various flames used in gas welding. 7

OR

VII

1 Describe the submerged arc welding process. 8

2 List advantages of brazing. 7

MODULE-IV

IX

1 Discuss about carriage of a lathe. 8

2 Describe any two types of gear manufacturing methods. 7

OR

X

1 Explain the crank and slotted lever type quick return motion

mechanism in shaper with a neat sketch.

8

2 Draw the figure of a drilling machine and identify the parts. 7