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J.F: ..... (OB.I) !OOU I of 15

I .

2.

3.

4.

5.

MECHANICAL ENGINEERING

PAPER-II Euler's formula can be used for obruining crippli ng load for a M.S. column wrlh hinged ends. Which one of rhc following cundirions for rhc slrndcmo~s rario 1/k ls robe sarisfied? a. 5 < Ilk < 8 b. 9 < 1/k < IS c. Ill < 1/k < 40

d. 1/k S SO

The kinematic chain shown in the above ligure is a

•• structure b. tuechanistt1 wilh one dcgrue of

freedom 4 mechanism with IWO degret-,; of

freedom tl. mechanism with more th>n two

deg~es of freedom A poinr on a I ink connecting a double slider crank wfll trace~ a. srraighr line b. circle c. parabola d. ellipse A whcd is rolling on • straight lcveltruok 1Vilh a uni fonn velocity 'v'. The Instantaneous velocity of a poim on the wheel lying at rhe mid-point of a radius

, ,. a. va1·ies betw<.-eu 3- and - -

1 2 b. varies between v/2 and - v/2

v \• c. vnnes between 3- and -

2 2 d. does not vary is equal ro v A four-bar chain has a. alltuming pairs b. one naming pair and the others ar-e

~liding pairs

6.

c. ~ne slidi11ll, pair and rh• olhl'rs are Luming pairs

d. ull 51iding pairs Which one of the following pair$ Is correctly matched? a. Beauchamp tower ; first experiments

on journal bearings b. Osbome Reynolds Anrifi·icrion

bearings c. Somonerfeld number: Pi1•ot and Coller

hearings d. Ball bearings Hydrodynamic

lubrication 7. Sensitiveness of a governor is defined as

8.

!1.

3 . Range of speed 2 '< Mean speed 2 .-.; Mean speed

b. Range of speed

C, Mean ~f)eed " Range of speed_ Range o f speed

d. Me-~n speed

... .SOcm $

' • B,

Masses B 1• B~ and Q kg are atwchl!d to a shall in parallel planes as shown 1n rhe above ligure. If the sha ft is rotaringar 100 rpm, rhc mass Bo is a. 3 kg b. 6 kg c. 9 kg d. 27 kg The equation of morion bra damped viscous vibmrion is 3x - 9x + 27x = 0

Tlte damping factor is 3. 0.25 b. 0.50 c. 0.75

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10.

II .

12.

)3.

d. 1.00 A mass is suspended al the bonom (>f two sprin~ in series having stifli1ess I 0 Nlnun and 5Nimm. The equivalent sprin~ slilliless oflhc 1Wu spring is ncnrly a. O.JN/ mm b. 3.3 Nlmm c. 5 N/nun d. 15 Nlmm 'fhe ' 'd ocity ratio in the t>.ase o f compound lrnin of wheel i~ ctjual to

No. oftcelh on fi rst driver a,

No of Ieeth on ht<1" lb llower

b.

d.

No. o f reelh on lasr follower No of teeth on fi rst· driver Pmclucl of teeth 1111 the drivers

Produ~~ of oeeth on the followers Produ~~ of reeth on the followers l'roduct ol'teedt ou the drivel'S

A loaded semi-infinite llate plato is having "'' eUiptical hole tAla - 1) in U1c middk as shown in U11! :~bove figure. The stress coo1oentrmion factors at poinl either X or V is a I h. 3

"' 5 d. 7

For the ~racket bolted as shown in the above ligu!'ll. l.he bolts will develop

14.

15.

16.

17.

18.

1 of 15 a. PrTmary !ensile stt'l!sses and secondary

shear stresses b. Prlomtr) shear stresses and secondary

shear stresses c. Prlmnry shear stresses and Sl'Wndary

lensi le Slr~sse

d. Primnry tensile stresses and seoonJnry compressive stresses

II scre.w lhread speci fie.d by M 20 • 2.5 (' as per IllS ihread system means a. Metri~ lhread of 10 mm nominal

diameter and 1.5 mm pitch having coarse tolerance

b. Metric thread of 20 mno root diametet and 2.5 pi1ch having ~oarsc tulerauee

c:. Metric Uuo:-dd of line class having 2.0 mm root diameter aud 2.5 mm pitch

d. Metric lhre<~d of 2() mm shunk diameter and 2.5 mm rnread depth with c-oarse-tolel'nnce

The koy shown in the above fig1ore ls11 a. Barth key b. Kennedy key c. Lewis key d. W oodrul'r key Which one of the ft•llowing stulemenlS whh regard to belt drives is NOT correct? a. Increase in the angle of wrap of the

belr enables more power transmission b. Maximum power is rransmined when

rhe centrifugal tension Is duee rim~s lh~ tigjn ~id~ tension

c. Wide and thin nell is prefembl~ for btlner lifu than a thick and nam>W one

d. Crown is provid~d on the pulley to make lhe belt rtm centmlly on the i)UIIey

Augle of twist of a sball of a djameler 'd' is inversely pruportiunol to a d b. d1

c. d' d. d' Which one of the following sets of parameters should be onouilored lor

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determining safe operation of journal beurinl!? a. Oil wcssuru. bc:lring mclul

lempcrolure and bc:lring vibrulion b. Bearing vibmtion. nil pressure nnd

$pe<'<l of shall c. Bearing me1nl tempemllll'e tlnd oil

pressute d. Oil pressure um.l bearing vibralion

1 '1. ( 'onsid~r 1he lbllowing pairs ufpans: 1. Pai1• ol' gear in mc~h 2. Belt and pulley J . Cylinder and plshm 4. Cam and follow~r 1\ mung !hose. the higher pairs an~ 1L I and ·I b. land ~

c, 1.2andJ d. l.land ~

20. Which one of rhe lbllowing sets of accelerations is involved in the motion of lhe piSI<In inside lhc C)'Ji nder or a w1ilormly rotaling cylind« mt:rhanism'! n. Corio lis and radial ucc.:lerotfon b . Rutlial and 1>mgen1ial acceleru1ion ~. Corio lis 11nd gyroscopi<; accelernlion d. Gyroscopic and tangcnlial accclcmtion

21. Consider the foiiO\,ing slalcmcllls: I. Rntmcl bar in u round hole forms a

t11ming pair. , A squnro har iu a square hole lorms n

slidil'\g [l!lir. 3. A venical sbafl in a fom-scep bearing

tbrrns a sueccssfid eo11srraim. Which of the scmcmcms nre correct~ IL l and3 b. I and 2 c. 2 and 3 d. 1,1and 3

22. Consid~r che lilllowing P•lirs of cypes 111'

bearing' and appllc~titlns: 1. Pnrcinl Juumnl bearing : Rail wng<lll

n,,lcs 1. l'ull .lnumal l:~<."nring : Oicsd cr]j;inc

crnnkshal1 J . Radial bcarin!! Combined radial and

nxinl Loads Which of lhcsc pain; /are concctly molchcd'l a. I alone b. I andl

,, L,),

J of I) c. 2nnd3 J. I, 1aud 3

T ~...; t;"A..,; .-!'..,;

~~~~.~~~~~~~~.~~~~~~~· Mw ·- Hw Consider the following :<latcm.:nl:> ~~:gaming th~ turning mom~nc.t.liagrum nf u reciprocating engine sbown 111 the abuYe Ggure (~cale I em' = I 00 N.m) 1. II is a. fi>ur slroke IC engine 2. l'he cmllpr~ssion Stnl~~ is ()• lu I g()' 3. mcancuming momenl T., = 580/rr N m 4. II is a multi-cyl1nde.r engine Which of 1hesc siHlemems are correct'.' a. 1. 2audJ h. I. 2 aud 4 c. 2. Jand .J d. 1. 3and~

24. The pilcbing of n ship in lhe ocean is an oscillmory periodic motion. A ship is pilthing 6• atxwe an\! 6° beltm, with u period or lOs ti'om it,' h<Jriznn111l plane, Consider lhe following stalemoms iii lhis regurd: 1. The mdlion has u trequl.'nry t>f

osclllarion (i.e. pitching J of 3 cycles I minute.

2. H1e mo1ion has nn angular lrequency of 3. 14 rndls.

J. The angular vclocil)' Ill' precession of ships rotnr is ll"/3nn radls

.J. The amplituck ofpilehfng isa/30 rud Which of 1hc>e slatemcms are correct'! a. I 3lld 2 b. I. 1 and 4 c. 2. 3 and 4 d. 1.3and·1

25. The crilit:ul S(l\.'ed t'r a shuti is uJfel.'ll'cl b) the. a. ditmc~ter und ih~ eccemricity of th~

shaft b. spru1 and tbe eccemrici(y of the ~hall c. dtamet~r and th~ SP'.lll of th~ shall d. span tlf che shu fl

26. Mutch lis l I (Appl icutions) with lisl II (Joini5) :111d selectche oorrect answer :

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1 ist 1 A Roof girder B. Cylinder b~d of an rc engine t:. Piston rod and cross head 0 Soltd shnft und a pinto List II I. Hook· s joint 2. Stwewcd joint 3 Cotter joint ~ . Welded j\lnU 5 Riveted jotnt Codes:

A 0 C 0 a. 5 3 1 .\

h .\ 2 3 1 c. 5 2 3 4 d 4 J 5 ·nte following 11armm:tcr.; aru to he calculated while designing a screw juck 1 Cure diam~ter of screw l . T urque required to rotate the s~'I'I!W 3. Principal stresses ~ . Height of the nut The correct sequence or the calculation of these parameters is a. 1, 2..\.3 b. 1. 2, 3. 4 c. 2. I. ~. 4

d. 2, 1, 4, 3 2N. Consider the following types of strc:ss<s in

re~pec~ of a IHoi, ting tope during acceleration ofload: I Direct str<.'SS due to wcigth hoisted nnd

weight of the rope 2 lkmli11g str.:sses due 111 hending, c)f

rop~ over the shcaw J . Strc:ss~'S due to Initio! tightening ~ . Accclcrutiolt stresses Which ui' Otese urc the tle)rrect typcs of stresse-s induced in 11 hoisting rupc during accelcnuion of'load'1 lt 1. 2and b. 2. 3 and~ c I 2and~ d. L3 and~

29 Consider the fOllowing statements regurding a ~entrifuglll clmch; I It need rfot be unloaded betbre

engagement

I of 15 2. It ennbks tlle prime mtll er to stun up

under no-load conditions 3. it picks up lhe l<llld gradually with th<

increase in spo:cd 4. It will not slip In the f)CHnt of

destruction 5. it is very us.: t'ul when the rmwcr un it

has jaw starung torque Whi~h of these arc the advwllages elf a ccnuifug;ll clutch? a. I, Zand4 b. 1, 3andS c. 2, 3 and 5 d. 1, 3, 4 und5

30. Match List J witl1 LIJ>'t IJ aud select tlte oo~ct answer:

31.

List L A. Compoutld train B. Quick retum mech:u1ism C. buctstrrught line motion D. Approximate straight line mouon List II 1. 1-lart mc:chanism 2 Coriolis forw 3. Transmission or motion around bends

and comets 4. won m~chnnism Codes:

A B l' I)

8 . I 2 3 4 b. J 2 I 4 c. 3 4 I 2 d. t 4 ' ~ 2 Match L1st I (kinematic inversion>) witll List II tnppllcatfons) nnd select the corred answer~

List I A.

~ B.~

c.~

0.~

Li>t II I. Hand pump

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1. Compressor 3. Whitworth qukk ret11m me<:hanism 4. Oscillating Cylinder Engine Codes:

A B C U ~ I 3 4 2 b. 2 -1 3 c. 2 3 -1 1 ~ I 4 3 2 Motch LiSL J (Applications) witlt Li•t ll (Feature« of vibration) •nd se.lect the correcl answer.:: · List I A Vibration tamper B. Shock absot'btr C. Frahm mehometer D. Osc-illator List ll J Frequency of free vibrJlton 2. Forced vibrat ion 3. D::amplng ofvibronion ~ - Tronsverseyibr•tion 5. AhllorptiC)n nl' vihr.ticm rodes;

·~ b.

13 3 1

c 2 ~

1)

I 2

c. 5 3 4 l d. 3 4 2 5 1\lntch list I (Keys) wiUo List U (("haracteristics) :tnd ~elect lhe ~>rrect

~&nsw~;

List! A. Saddle key 13. Wo~druf.fkey

C. T:tn geul key D. K.nnody key Li.stU 1. Str=g, in $hear and crushing 1. Wilh.,ands len~ion i.n one direction ~ . TransmL'ision of 1mwc:r chrnugh

liietiona l resistance +. Scmiciruular in 'bapc C'Jdes:

A D C D a.. 3 •I 2 b. e.

" 4

4

' _,

3 4

2 1 2

2

s 1>1 13 34. l'vla1ch Li<i I (i\pplic.11ion) with I tsl ll

(Drive element) and •elect the correct

35.

36.

~H1S \H::r;

List r A Aulomobllo diJJet~:nLiol B. Bicycle C. Planing mochine D. Radi<~tor fun of automobile l.isl ll I. Flot ~ell '2. V-belt ·' · Chain drive ~. Go:-.... dm•e Codes:

.-\ B a, 4 3 b. I 3 c,

d. 4 I

2 2

c

I

4

D 2 2 3

Mo tch List with list IJ and select the CQrrect an~wer:

Lisll A. Unwin's formula B. W nhl lllctor C. Reynolds equation D. Lew i~ fonn f3ctor Li$1 II I. Bearings 2. Rivets ...,_ Ge-ars 4. Springs Code.:

A B l' 0 ~ I 4 2 3 b. l 3 I 4

c. 1 3 2 4 d. 2 4 1 3 In an onhogouaJ cutting test, the eutting force :md thrust force Wet"C observed l o be 1000 N and 50() N respectively, l f the mke anglo of tool is zero. ~te coefficient of frlclioo in chip-tool interl''ooc will be • . JJ2 b. 2 c. Ll ../2 d . ..fi •n,. magnitude of t.l>c cutJ ing speed for maximum profit rate must be a. in betw~' lite speeds tor minimum

co•t ami mn.ximum production mtc

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b. higher tl1an lhe spo.'Cd for mn.ximum production rnte

c. below the speed. fM minimum cns1 d. equ~J to Ole Speed for minim\lm oost

311. 111~ s~qu.:.1ce of mnrltJn!l$ "S 14K 14 S .. on a grinding wbccJ rcpruscnl\-rcspectively n. bond type, strucl\lre. grade·. grnin •i1.e

'ltld ahr.asive type h nbmsive type, g.-ain size. g1'"de.

strucluN md bond I) pc "· bond typo, grad~. atrncture, grain size

and abr.:a.sive lype cl, abrasive t.>1>e , structure, grude. gmiJ1

size and bond type ~9. In • l<>ol life tL:llt.. doubling the .:uujng

speed 1'<!duccs the l<.>ol iife tO l /S th of I he original. The Taylor'• tool lit\: index i<l (1, 1'2 b. I~

c.. 114

d. 118 40. Matclt List 1 ( 1'~ of ¢<1>Ung) w itlt J lsliJ

(Working principles) nnd select l11e corr"'" anS"wer: A. Die ca<ting a. Centrifugal c.'li!ting C. C<ntrifuging D. ContinuOliS =•tins r ist 11 I. Molten mc(;IJ is forced Into lite di¢

under pressure 2. ...\..'\.-is of rotnt1oo docs not coincide w'iUl

axis of mould 3. Metal solidifies when mould is rotating 4·, C'ontinuouslv pouring molten metal

into mould Coxlc.~:

A 13 C D

"· 1 2 3 ~ b. 4 .3 2 I ~ 1 2 3 4 d. 4 2 3

~ l. C:on•ider the following statements: fn «leelrochemt.:.11 gnndmg. I. il rubber bond~d alumina grinding

wheel llcl' os tho Cllthode oud U1c wo1·kpiece a~ lhc unodc

2 11 .:t1pper bonded alutnin:~ grind.iug whet:! acts as th~ c:~lh<•de ;md the wn1·~picco as the anode

6ui iS -'· met.31 rernovol bkcs place due to the

pre$sure applied b) the grinding wheel 4. met~ l romoval takes place due to

clctlmly~i•

\Vhicb of th..:sc .statemunb ~rc corn."'Qt1! o. I oud 3 b. 1 and 4 c. 2 and 3 d. 1 nnd 4

-12. In the rolling process. roll !epnnting foroe can be decreased b. a. rodu~.inS rhc mllrl iame~cr

b. incroasinJ! the rnll diameter c. providing back-up t'olls d. it1croasiug the friction betw~n tbc

rolls a.nd the mew! -13. Consider ll1e following statemenlS<

In forwnrd e:<tn1soon proc.,., I. the ram and the .:xtrudeJ protl11ct lrnVCI

in the same direction 2. the rnm and tbc c:<tnt([()(iJ/fOduct U11\'d

in tltc opposite direction 3. the speed of tnl\·d qf tlu> extruded

pr<>dtiCI tl ~3me Ill that (lr !he r;Jm 4. the speed 111 t.rnvd of tho ~~u·uded

pro~u.:t ill JlfCl!tcr than tl1llt of the rom Which of these slol~mcuts "'" cm'r<ld? •· laud 3 b. 2 and 3 c. 1 a.nd 'l ol. 2 nnd 4

44. Which ()ne of tl1e followinj! lubri"'mts is must s\lol;!hl<! for dr:1wiotg llliliJ steel wires'! • Sodium stearate b. \VJtor c. Litue-watcl' d. Keroll(.11c

45. Which one of l11c following >latemcnts is c.orrectiJ

a. }llq flux is u•ed in gas welding of mild steel

b. Bornx i$ the commonly Wltd Ou.~ co~ting ou 1\dlding electrodes

c, Laser he:~m weldins employs a vocuum ch•m~er nod lhw. 3voids use of o .<hielding method

d. A<' can be uJ>col torGTAW prvCI:ss -16. B.:st position (}!' crnnk tor blanking

opcr-alion ln :a mcduutic.a I ptCS!:I is a. lop dead cunlro b. 20 degrees below top dead centro

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47

49.

50.

c. 20 degrees before bottom de3d centre <1. Hortorn dead centre !\latch List I ( proce~s) with L.isl II (product~lmalo:ria b) and select the .:orrect answer: List l A Dlo cast in£ B. Shell molding C. COz molding LJ. Centrifuga l casting 1.i11 n I. Phenol formaldehyde 2. C.!. pipes 3. Non-ferrous alloys 4. Sodium .sJlicntd Codes:

.\ B C D

•• b. 3

3

_, 2 2 4

d. , 2 4 Which one of the l'ollmving sels of tools or tools and processes are nom1ally employed for n"llcing larg~ dituncl.-r holds'/

"· Boring tool h. lH A tool (Borin1] ~nd tr<:pamtin~

as•ocintlon) and gun drill c. Gtm drill tlnd hoti ng cool II Boring toll :rnd ll'llpanning Which one of the follo\\~ng processes ol' gear manufncturu r0 uHs- in bt:St llCCuracy of the involutos gear tooth prolilc'/

a. Milling h. llohbing c. Rot1ry gen r ~hape

d. Rn~k t)lpe gear shapcr One Qf the mdcx plat"'i of a milling muchjn<.: dividing beau llllll the lil lli>w ittg hole circiCI!: 15 : 16 : 17 : 18 : 19 :211 A ge>r wheel of3~ t¢<:th has to l>e milled by ~implo indexing method, ·ro muchine ~a<lb toollt. TitC Wdei! L'fank bO$ tO he I'Ototed lllrougb a. 17 bOld' in the 20- bole cirole b. I~ boles In the 10-holes cird e a. 1 revolutinn and 3 holes in -.?-hole­

circle d. 1 revolution and 2 holes in I 8-hole

..:irclt)

Sl.

52.

54.

55.

7 ul IS Wlticll one of the following loleronocs set on inn<!r diameter find <Hiler diameter respectiVely <lf headed dig hush for prei<s tit is corn:J:t? a. G 7h6 b. r 7 n6 c. H 7 h6 d. F 7 j6 M•lch l.ist I (Components of a tlble fan) with List U (NfanuJitcluriug pm"csS<!s) aud select the \!Ofi'CCL3nsw t:r:

List I A. Bose willu tond B. Bltule C. Annature coil wire 1) . Annatnreshatl l.islll I , Stamping and pressing 2 Wire drawing 3. Tutn ing 4 . Caslin!! Codes;

•• b.

c. d.

A 4 2 2 ~

13 3

3 I

c 2 4 4 2

D 1

1

-· Crater wenr starts at some distance from the tO(> I lip b<C<JIISC

il . Cutting llllld cnnoQt pe-netrate tltal rt.~ion

b. StrCJ!C On t-nkc: f:1cc is m:tximunt ul the region

c. tJ'ool fitreugih s minimum at that region d. Tool temperature IS masituum al thal

t'<:gion Consider tlt~ foUowing tuo l wnl~Juls:

I. uss 2. Cemented en> bi~c

3. C er:t m ics 4, Di:nntlnd The correct sequence of lheRe· rnater1n.ls in dccroa~ing Qrder nf thei~ cutting •11eed i~ a. 4. 3, l. 2 b. .!. 3. 2, I c.. 3, .[, 2. l d. 3, 4. L 2

Cousidct· Ute ft1llow iug II"'""'"''" L CiJis weldi11g 2. Tltennil welding

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57.

58.

3. Arc welding ~- Resistnnce welding l'he correct ~equence of Ulese processes 1n increasing order of ~teir w~lding l<nnpcrnturt is n. 1. 3. 4. 2. b. !. 2. 3. 4 c. 4. 3, I. 2 d. 4. I. :l, 2 l'v!Jlteh Lilli I wllh Li;t II and .~elect the correct answer: 1.-istl A. Quick return mcdl"nism B. Apron mcchan.lsm C. lndll.'ting mcQhnnism D. Re>gulnting. wbcol List U I , Lnlhe 2. Millin,!! mach me ' ·'· Shnper 4 Centre less grinding t'odes:

A B t'

•• 3 2 b. 2 3 4

"- 4 2 3

D 4

d. J 2 4 Consid<:r th<! following chnracteristic:o of • robot; I. The I ip of the robot amt moves li'om

one poittl ro another wilb it's In b-.:1\\oon path nol being diafm~d.

2. it can bo used for drilling holts at different points in a work piece.

3. It eM be used for V bull joint welding between two poiLtts.

4.. 'llte memory copa.,ity required for iL~ conttol unit is low. \VIticb of tlttsc arc lhe ch3racteri~l i~ J~ociated -with a point to point robot1

:1, 1 3nd 2 b. L3~nd4

c. l . 2 ond 4 d. 2. 3 J.nd 4 Mnlcb Li•t 1 (Components used in jigs und f~xtures) with l.,ist U (Thatr functions) and select the correct ~nswer J..isrl A. Jack pin B. V -locator

59.

60.

61.

C. Bushes D. Ejectors LisliJ

8 of 15

l . To guide the drill bit duting machining 2 l'or easy removal of the work piece

from th" j ig or fL~turc 11ller the machining. opcr:~.tion is oYc.r

3. To locale the creular or samidrc.ular objects in "jig or lh-ture

4. To locate '">rk piee"" whose tlicucnsiQns ;~rc subject to varit~lion~

Cbdes~

A 0 C D

•• 3 4 l 2 b. 3 4 2 c. 4 ~ , I ~

d. 4 3 2 Match Li•L I (Scientist) with List II (Researeh woti.:) and select the conlll:l

answer; Listl A. Schcw:ut B. Tagucbi C. Erlnng List II 1 L""s fwtclton in qualitv 2. Quening model 3. Zero dcfe~t 4. Control charts C<><lc•:

A 0 c •• 3 1 2 b. ~ 3 1 c. 4 1 2 d.. 3 4 The mnnogemcnl 1• interested t~ know tho; t>ercontage (If idle time of equipment. '11te trinl study showed that pcrcon!Dgc M idle time would be 20~''· 11te number of random observnbons nec<'l;S:Jt')' for 9S0o lc\ei <Jfcon fid"'l.cc and ± 5•o accurocy b a. MQ(l

b. 1600 ~. 640 d. 160 Which one of tho following IS NOT n leohn ique of PI\ I I'S'I 1. S)"tthetic dnta 2 Slop-watch t.ime s1udy 3. Work f~c1<1r

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4. MfM 62. Rowon Incentive pion is glven by IR

Houri~ rotc, T Acmal lime; wkcn l11r job. T, = Slanda1u time for job T, = Sl11n<la• <I Lime lor jnh aud 11- Ellming•)

1T T) £ = fl T 1

• • T fl • T •

l'he shape or the curves between bonus eurne<l oud )X't"entag~ Lin•eso\led is " •· Stroight Line b. Parnbola c. Horizont~J lino (1. Vertic~! line

63. Lut year. a manotllcturer rwuduced 15000 pn)tl\•ct• whil~ wo:re w ill R.•. ~110 ench ,\t that volume. the fixw CO$ts wen: Rs. 1:5.2 1•_,. aJ.td lotol v•rillbfo .;oslo were R•.21 l~cs. 11te break won IJU•nlity of produ.:t Wf>llld be •. 4000 1!. 7SOO .:. 8400 d. 9500

64. Cons iucr lbo followine statement> rcg:udlng plant location and ... pkmt layout: 1. Qualitative factor "llnlysis i• o method

of e\Olluating a poteutial location "itl10ut npplyiug quanlibtiw vo lu<'S to tltc decis ion criteria.

2. l11c lluc" dctcnuinnnts of tl1e type of layout are type ,.r product, type or j)l'ocess and tlte volume of production,

3. i\n opplin~tce manufac(luing )l13nl wltere lli'Oduc.tS nrc made on llSSetn bly lines wo1dd be clas.l.fied M job shop type of layonl

Whi~h ol' tlu:se stOtt<:menL< isl•re corr~ct? a. 1,2 trnd3 b. I ond 2 c. 2 anole d. 3 alon~

65. Routill£ In production plnnning and control refers to the a. Ba lnncing ofload on mach10es b. Aulhonzotwn of wr,rd to be pon<lnned c. Progrc-. ol'work perli'nmed II. Scqu""co M ()pcr.lliOns to he

porfoJ'mod 66. Motoh Li<t I witb List U lind select t.ho

corrt."Cl :mswm: L.ist I

67,

68.

69.

'l nt IS A. Control cluuu for ' 'urinhles B. Control ~h~rt for number of non-

cont'onnities C. Control chart for ti-J<!llon rejecle<l D. Activity lime distribution in PERT Codes:

•• b. c. d.

A 3 5

4

B

4

3 4

c I 3 l

D

J 2 2

Which one of the following statements is NOT C01Tei!t? a. Assignment model is a special case of

a lin\!.llt progn:a.mmlu_g probll!lil b. ln queuing .models. Poisson arrivaLs

and exponential sen-ices -are asst1med c. ln lransportalion probten ... the non­

Sl(Ua.J e mallix is made square bv adding a dummy row or a dumntY tolumn ·

d. In line:tt pr<>grAmming pn>blems, thml oF11 du•l is a primal

Con~lder the lniJO\• ing st:ltcmen(s: l. A linoor progrumming wohlem with

throe VbriabiC'I nod two con.•troinls c.1n he solved b)• graphical method.

'2. For sohu1ons of a linear prognamming prnhlcm 1\'ith mixed COMtruinls. ~ig.­M·IIIOthod can bo. employe<~.

3. fu the soluti()n ~roccss or • linear pn>gronun1llg problem usinJ!. Big·M· method, when an ortitkial variahlt: lc•\'e$ the bn.•i.~. l}te oolumn or tbe ••tifioiol v•.riobk CJJn be removed from ~ll suboequent table>.

Which of these• statements Me corret:t'l ~. I. 2 aod ~ h. I and 2 c. l and 3 d. hnd 3 Arriv• ls .tt • telephone ~<)oth •re con;-ldered b• Poisson wiUt .,, a\ or:tge time of t() minutes between one m'iv~l and the nexi. 'l11e lenQ.th ill' n phone c,, ll is lll!sumcd t11 he di•tributed "''JlOne.ntiaUy with " mulltl of 3 minutes. Tbe probability Lhat -a penon arri-ving. at the booth will hove to waiL is • . 0,114~

b. 0.300

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70.

71.

72.

(!, 0.429

d. 0,700 Dummy uclivities are used iu 1.1 1aetwork lo a, Facilit~tte computatiot• of slacks b. Satisl)- precedence requiremeniS c. Determine project completion time d. Avoid use of resources If earliest stnning t·ime for nn nct ivily is 8 weeks, the Ia! est finish time is 3 7 weeks and the duration time of !he activity is II W'-"!kS, tlten the toial fiORt i• equal tl) a. 111 weeks b. 14 weeks c. 56 weeks d. 40 weeks Consider the l<>llowing llow chat:

The printed value among X, Y m•d Z by the computer w1 11 be a. Tite highest b. Tite midd le c, The lowest d. Non~ of the above

73. match List I with List II and sele<.'f die correct answer: List I A. RAM B. ROM C. DOS D. LAN Lisl II 1. Network of computers 2. Software which makes the ~omputer

work 3. Memory used for processing ~ . Memory In which user cannot 1vritc

anylhing Code.~~

A B c D 8. I 2 3 4 b, 3 4 2 c. 2 3 4 d. J 4 2

74.

15.

76.

10 or 15 A productfon system hilS a product typ~ of layout in which there are four machmes laid in .series. Each machine does a separat~ operation. Every prod.uct needsull the four operations lo b~ earned out. 1 he designed capacity of e>>ch of the four muebines is 200, 175, 160 and :!10 produciS per doy. TI>e system capacity would be a. 210 pmducts per duy

b. 200 produciS per day c. 175 products 1>er day d. 160 products per da) Match List I (End conditions of columns) with List ll (Equivalent length in terms of letJ.gth of hiuged-binged column) and sel!!ct the- oorrcct answer: Li~tl A. Botl1 cuds hinged B. One end fixed and other end free C. One end fixed and lhe other pin-jointed D. Both ends fixed List 11 I. L 2. J2 L

3. 1 / 2 4. 2 L Codes:

3 ..

b.

"· d.

i \

1 I J 3

Match List

B 3

3 I I

with correct answer: List I

c D 4 2 2 4 2 4

-1 2 List ll and selecl

A. Bending momenr is constant·

lhe

B. Bending moment is mnximum or minimum

C. Bending moment is zero D. Loading is constant List II 1. Point of contra flexure 2. Shear force changes sing .3. slope of shear Ioree diagram is zero

over the portion or the beam 4 . .shear foroe is zem over the portion of

the beam Codes:

A B C D

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om77.

78.

79.

80.

a. 4 2 3 h. 3 2 4 c.

"" ,

3 d. 3 1 4

II'

1 f i>-L 21. f 1--t

A loaded beam is shown in the above tigure. J'he bo:nding lnomcnl diagmm of the beam is best rl!presenled as a.

b.

c. 1\ vv

d.

At a certain section at a distance ·x~ li·om one of lhe suppons of a simply suppo•ied beam. the intensily or loading. bending moment and shear Ioree are W , . M" and V, respective!~. if ~oe intensit}' of loading is vuryi.ng continuously along 1ho length of the b"am. the invalid rc.Jation is u. Slope Q, - M, ! V, b. v, = d M, / dx c. W, = d2M, I dx' d. W, = dV, I dx Plane s1ress at a poinl in a body is delined hy principal stresse.• 3cr andcr. llle ration of the nunnal Slrcss Ill 01• maximum shear stress of Lhe plane 1,)1' mnximwn shear SlrCS~ is 3.

b. 2 c. 3 d. 4 Which 11ne of the following Mohr's circles reproscnts I he stale of pure shear'/ a.

.b.

d.

v· .-q: -$-· =$:.

II ol 15

R I. l'hc state of plane >tress in a plate Clf I 00 mm Lhickncss is given as

u u = I OON l mm' . o., =lOON l mm'

Young's modules = 300 N/mm' Poisson's ration = 0.3 The srress developed in lhe direcllon of ~hickness is a. 1.~1'(>

b. 9U N/mm1

c. 100 N/mm1

d. 200 Nfmnl 82. CMsid~r lh!! tolli)\Ving IOOIS;

I. lligh carbon steel tools 2. I ligh speed stccllol)b 3. Ceramic 10ols 4. Carbide tools Which uf these 100b an: provWcd with negative mke angle'? a. I nnd 2 b. 2 and 3 c. I and 3 d. 3 and 4

83. A rod of lill!terial with E. - 20() ' I o' Ml'a and a = I 0'3 nunfmm"C is tixed at bo01 lhc ends. II is unilonnly heated ~ueh thai U1e increase in lempernturc i.s. 3o•c. The stress develuped in ~1e rod is a. 6000 N/nu112 (!ensile) b. 6000 N'/nun2 (compressive) c. 2000 Nfnun1 (teosilel d. 200(J N/nuu1 (compressive)

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84.

85.

86.

87.

88.

1\ circular solid shatl is subjocled lo a b~nding momenl of 400 kN.m and o twisting mom~nt of 300 kN.m. On the basis or lhe max imum principal, stress lheory. the direcl stress is o ~nd ac.cording lo lhe maximum shear stress theory. lhe sh~ar stress is r. The mtio a /t alL is a. l/5 b. 319 c. 9/5 d. 11 /6

llte two cantikvcrs A and B sho\\11 in the above figure have the same unifQnn cr<..l$$­section and: the same material. Free end defleccion of cantilever 'A • is o. The value of mid-span dd1ection nf the cantilever ·a· Is

.... ... ,_ A li nk is under n pull which lies, on one of the faces as shown in the above figure. The Jnaguilude or ma.ximum compressive stress in th~ line would be 1L 21.3 N/Jtun.' b. l6.0 N/nuu' c. 10.7N/ntl111

d. zeru Two coiled spring,,, each having stiffuess K. Me placed in parnllel. The stin'ness of cl1o COIUbinaliou will be a. 4K b. 2K c. K/2 d. K/4 A long slender bar having unifonn recmngular cross- section ·B • II ' is acted upon by an 3)(ial compressive force. The ~lides B and H are rarallclto ~- and )'·3Xes respcct·ively, The ond5 ol' the har are fixed

8'1.

')().

1)1,

\)],

I)J.

1 ~or 15 such that they behave 6 pin-jointt'ti when the bar buckles in~ plane normal to x-axts. and they ~have as built-in when the bar buckles in a plane Mrmalt<l y-axis. If load capacity in either mode of buckling is same. the value ofii/B wi ll be a. 2 h. 4 c. 8 d. 16 The property by which an ammmt ul' energy is nbsorbcd by n material withnul plastic deforuuu.ioll, is called a. toughness b. impact strength c. duccilicy tl. resilience Wh~n 11 weight of I()() N falls on 11 spring of sl iA'ncss I kN/m from a heigh! o r 2m, the deflection c.wsed in the f'i rsc filii is a. equal to O.lm h. h<:tween U.l lo 0.2 m c. ~qual tn 0.2 m d. m!'re than tl.'2 m Which one ol' che lollowing_ features imprOWS the fatigue Strength Of II metall ic material? o. Increas ing the temperat11re b. Scracching the surface c. Overstressing d. Under stressing. Ce.rmet~ are :l. metal~ for high tompennure us~ With

wrami~ li~e pmJ)Crtic~

b. t,cramics with mcltlllic scn:ngch nnJ luster

c. Coaled tool. materials d. m~ral·c.cramit composit~s

Pcrccnwgcs o>f various all,>y lng ~lemen~S present in clitlerent st~el materials are given below: I. IR% W;4%Cr: 1% V;5%<.:o:0.7%C l. 8% Mn: 4% Cr; 2% V: 6% W: U. 7% <.: 3. 27% Cr. 3% Ni; 5% Mo: 0.25% C 4. 18% Cr. 8% Ni: 0.15% C Which uf these relate to chat of high SJ1C-~d sccei? a. I anti J b. I antl1 c. 2 and 3 d. 2 and -1

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A thin cylinder con~lns lluid ol 3 prl:llsure of 500 Ntm'. ~1e Internal di:m\eter of th" ~hell is Q.(i m and the t<:nsi lc stres• in U1c 111oterinl is to be lintitcd tcl9()00 Nlm~. Tile shell must h:ove o minimucn w:cll lhickn""' nf nc:arly a. 9 111111

h. I l 01111

C. 17 lUJJI

d. 21 JIUD

95. Fmm o tcusion ll:st, the yield •,treuglh of steel is 1-~lmd to he 200 ~lnun·, Using ~ factor or safet~· of 2 and applying maximum principal 6tres• lhoory of failure-. Lbc p<:tmis•iblo strtss in tho stocl •hoft subjected to torque will ho a. 50 Nlmm!

b. 57.7 N/mm' c. ~6.6 N/mm1

d 11)0 Nlmm' <16. Which on~ ul' the ro llcMing prupr.:rtlc::s is

tltorescn~itive to iuc1~ttJSc in slrni.n I'!IIC?

" · Yield sb·cngth h. Proportionol lfmil t. Elostic limit cl. l ens ilestronglh

97. Pearlite ctJnsists of :1. 6.67"·• C :mil 9~. :-3% ferrite h. t30,·o F4: and ~no~ cemcntitt:. ~. l3% C •oil ~7~o ferrite d. 13'1o oomcnlihand 87"H<mito

98. Addition of VMMiium to <toel rusulls in improve-me-nt of :t. ho.1tlrootthillty byqoonchlng b harden ability c. fatigue strength 11. resistance lCi oxidation at elevoted

lemp~nruru

99. Atomic packing lhctor (APF) in the case ul' copper Cl)'&lol is

"· 0.52 b. 0.6M c. U.74 cl. 1.6.~3

I 00. f'>urlng par3tnctlc so hdollcallon. one hltlltd b . ~.<lcnbin~s With one ~olid to fomo A

sccmld I~C\\1 solid h. •<~lidi(ics iut11 1\vo dill'c!<>nl •olids c. f01tos one •olid d. fonn one solid and unother liquid

101. Consider the following advantages :

13 ut IS l. Ropld process

? . \Vorl; witl1 keyways c.'n ~e ground 3, j\)Q woJk holding device is required. Which ol' these are the •dvantai!"S of centre les; grinding'/

a. L 2. und 3 b. l and 2. c, 2a.nd 3

d. land 3 102 102. 1\.lscrtion (1\): Poisson's ratio llf a

material is a measure of ch~ngc in dimension in one dircetlon due I<• lcla<ling in Uoc pcql<lndkul:u· di1'<1cliou. Rcoson (R): Tile uaturo uf ltctcl'lll &lruiu in ~' oninxinlly lt ~ndetl memhe:r i.tt oppul\itt l'u th•• or line.11· $lr.1in.

"· l~olh A arul Rare u·uc: Md R t~ th" c:orr-c<:l <e'<planoliun of i\

b. Boll• A and R :tro u·u~ but R i. NOT the correct Ol(plonation of A

c. A is true but R is ·f.1lse d. A is false hul R is true

l(l.l Assertion (A): Addition polymeru.uoon IS a primory suonnat ion of incl1vidual molocules into long choins. Ren.son CR): lrt addition polymctiz.1tlon th e reaction produces a <mall molecule as l>y­fli'Oducl a. Bolle A and Rar" IJ uc and R IS lite

~uncct cxplan:ction oft\ b. Both A Jnd R ore true hut R is NOT

the currect "'-Xplanaticml)f A c. A is true oUI R L' ral<e d. A is f;clse hut R is trne

104. Assertion (A) Nomr• li:t.ed steel will Knee lower hordu""s tl~nn M\llcakd •teel Rcasou (R): ·n,. pc;u·ti.,· of nor.mnfucd steel is finor 1'1nd has lower inlermo laculor space. a. Both A and R.1re b'IJe nnd R is the

col'!'>:¢! cxplon.1tiou of A

b. Bo01 A Md R arc mre but R is NOT tho corTcct cxplan•tion of A

c. A i$ true ~ut R is talse d. A is flolse but R is true

105. When a composite unil con.sishng ot' • steel rod surrounu~(l ~>' a cruet iron lube is ~ubjcctcd tu 1111 •~•I load. Asscrfiun (A): The ratio ul' nunnnl •tn:.sc• induced in ooth lhe ni•leriat. ;, C<jll3l lo

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tho r~tio of ¥oung·s moduli of respecHve materials. Reason ( R): Th~ ~ompositc unit or U1<:s<> twu mott:rialJ; is li1mlv fastened tol!othc• Ill the cud~ to i:tlliUtC: ~c1utd deforn;;atiuu in hqth the m:olcrinl$, ;1, Both A ~nd Ran: true :md R is the

con"Cc\ C:l<plaMtion of A b. Bo01 A and R are true but R i• NOT

tlle COtTec.l expl:snation or A c. A is truu but R is false d. A is false bul R i$ lnJe

l(tli, ~sert1on (A) Cam of a specified contour 1s preferred lo a cam with a specified follow"' mution. Reason (R )! Cam of • specified contour l•u sup~rior performance. a. 'Both A :ond Rare true and R i~ the

~omct e:~o1>l~rnltion ol' A h Both A 1md R are ltUc hut R is NO'I'

the cOrl'<:ct c.~plunntiun uf A c. A is ttue but R is fal•c d. A is l'olsc but R is true

1()7. A"ertion (A); 1n designing the size of the flywheel, the weight of the am1s nnd the boss are neg.le.:ted. R"ason (R); 'I he flywheel obsorbs cne•'llY during tbose periods wbcn tb~ turuing moment ls greater than the- re!':isting moment a, Bolb A ~nd Rare uue and R is lh<l"

.:<lm>cll.''<lllonollon of A b. Both A and R OJt truo but R is NOT

U.e correcl expL1nntion o.f A c. A is true but R;. r~l•e cl A is fol~c but!{ is true

lOS. Assertion (A): l'or u radial eng}M Cl}ntalnin!l Rout 11r >lUIIe "Yiind<.-r!<. U1c 'itoond:•ry fott:c" :u'C in i!(mlplctc· bul:tucc .. Reosou (R): The •tc<Jnd"rv dir<.'Ct und reverse crank.~ rnnn " l>alrm~f<l system in lhc radial cngincm, a, Both A ~nd R:!ll: trn~ Jnd R i3 th~

conl!"t explanotion of A b. Both A and R ""' true but R is NOT

the corr"".t explanation of A c. A t< true bul R L; false d. A is faCse but R is true

109. ~serbon (i\): 111 pre-loaded rolled joims .. there i• o tendency for failure tu o~cur in ll><> gross plate section ratl1cr lhon tlmmgh holes.

I ~ nl IS Reason (R): TI1e ell'¢ct of prt>loading is lo creal<! suOicient m otion between the aSgcmbled pn1ts sv thatnu sl ippnge uo!Citrs. a. Dill!> A and lhrc 11 uc ''"d R ~· tile

curroct c.xplimnlion of i\ b. Bnth A ond R nrc ttuc but R i> NOT

the ..:urrect explanali<m of A c. A is ln•e but R is false d. A is false hut R is true

ItO As<eniou (A) : Helica l geaos are used for transmitting motion ~nd power bctwecn int"~rsectin! sh;~_fts, where was .Jt.raight bevel gears ~re used for tr~nsm itting motion aud power b~iw..cn two shills inltm~ectin,g oaoh other at 900;

Reason (R )! ln helical £~1'5 teeth arc inclined to the axis of lhe shaft and are in u.e form of. helix, whereas lit be\•el gears. let:lh :lfc lapon:tl bo01 in tlliekness :mtl height from one end to 01e-oU1er. a. Bolh A and Rore b"e and I< is U.o>

c.orn:ct e.~plan.1tion of A b. Bolh A and R nre lrue but R is NO'l'

tbt .:orrect expl3nation nf t\ c. ;\ i• true but R is f•lse <l A il< fnlst but R is true

Ill. 1\Mertion (1\ ): To oblttin Iorge defonnation> by co ld working intcrmf<liatc :~nncaling is not l'<:(llllfc<l. Re:•sun (H); Culll IV()rk:iog is pcrlb nncd belOW the rct:l)•taiJisotion lc111pC1'11lure of the work mllt<•·inl . a. Bolh A nnd Rare true and R lS the

correct explanation orA b. BoO• A aotu R ore true but R is NO'J'

the correct cxplamtion of A c. A is true but R ;,. fube d. A is false but R is true

112. As11llrlion (A): Oil os cuttiug flmd rusult!. in a lmver coef1ici~1 ol'fnulion, Re;u;nn (Rl: oil fom" n thin liquid filtn between tho tool J>cct .Jild chip, oud iL l"·ovided ·ll.l'dro¢yonic Iubricallon ·. u. BoO• II. ilnd Rnrc trW ~nd R ~· lhe

~Om:<:! eXplnn~lion or A b. Bolh A ond R ate true hut k LS NOT

Lhc cuncet c~-.;pl:mation ur A "· A i• true but R is false d. A is fnlsc but R is true

113. Assertion (A): ln metal cuuin,g. lho nonnal lnws of s liding fri<:tion nre not npplicable.

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Reason (R): Vel) high temperature is 11rodueed m th~ tool-dtip interface. a. Both A and Rare true :md R is the

e~rr~et e.xplanatJ<1n of A b. Both 1\ 11nd R are lfue blll R is NO'J'

the corr<CI cxplnnoti<>n of A c. A b true btll R is fi1l~e d. A is lillsc but R is true

114 Assen ton (A): 11tc maio <}f' culling force to lhrusL Ioree is wry htgh in grinding process 3.' cumparea tu othe-r mocbining procosses. Reason (Rl: Random orieolnl.ion and effective negruive rake angles of nlmtstvc grains Tncr<ase the cuUing Ioree and adversely ntleca the enning a~titm ttnd promote rubbing nction. o. floth A an<l Rare IIIIo and R i> thu

corrtct c_,.-ptanatiun of A b Both A ntHI R arc tnu: but R is NOT

the cnrrcej c•plonotion of A c, A (, true hut R is false d. A is f'•~se but R is true

11 5, Assertion (A): The :t.xis of an NC drilling rnachinc Spindle is denoted as z - ax is. Reason (R): In NC machine tool. the axis perpendiculllf to both x- and y - axes 15

desig•loted as ' • tL<~~ . a. Both A 3JJd Rare u·ue and R is the

~llrrCC( ~Xt)lanatlun or A b Both A mtd R are lme but R is NO'!'

the correCt expltmalion or A c. A is true but R is talsc d. A is false but R is true

I I o 1\sscl110n (A): Double sampling is preferred over smgle ~nmpling when the qualily of incoming lots is expected t<' be either vCr) good or very bad" Reason ( R): With do ubi~ snmpl iog. th• amount of lnspection reqttired will be lesser than in lh" cas< of s i11gle swnpling a. Both A and Rare true and R is the

cvr~·ect explauntitm tlf A b. Both A :u1d 1<. are 1111e but R is NO l'

the correct ~.xpl :muttoll of A c. A is tn•e bul R IS false d. II i.> false but I~ is trw

117 1\sscrtiott (A): Vogel 's approxm1tuio11 metltod Ytelds ~>e. best mrtiul basic

I S o f 15 feasible solution or a ti'UllSIIortalion fli'\Jbknt Reason (R): Vogel's method gives allocmiuns 111 the lo,\esl cost elements of the I\ hole matri~ ~- B<)th A and Rar~ true ;uul R is the

con-cct e•planation 111' A b. Both A iJHJ R are tme but R is NOT

01c correct explanation of A ~ A is lruc but R is false 0. A 1s false but R is true

118. Assertion (A): Master production schedule dnves lhe whole of production and inventory control sys1e111 in a 01anufacluring orgunl7<ttiun. Reason ( R). Mast<~r production schedule is a I ist of dail) 1md 1\'(~kly work released by PPC to production . a. Bolh <\ anJ Rnre true and R is th<

correct explanation tlf A b. Botlt A and R are true but R i' NOT

the correct <Xplannl illn 1)1' A c. A Is lfue but R ls f:tlse d A Is false but R is tmc

tt•J. Assertion (A): l'h~ Jin:ction or Cnriole<. acceknttion sho\>11 in 01e given figure is correcL

( 8-- z '" v (coriol<S ""''''"'linn)

• .. ... 1--

0

Reuson (R): fhe di1ectiou uf C:uiotes accdcrnt•on is such ahnt It will rouuc m a veloc ity v about it~ urigm in the dircillion oppllslle to u)

120. Assenion (A): While 11lotting uonut•l charts for vurinbl~ averages of sub -groups of readings arc u'cd rather than the tndividual rcadin£,S. Reason ( R); IT oontrol chans. ur~ pl!'lltcd with the Individual reading;. the. laoour of ploning ~1c chan ''ill inercase. a, l.loth i l and Rnn: true and R is the

correct explanatiOn of A b ll11th A and R nrc true but R is NO'I

the cQrrect c.\']Jiannlif;m of A c. A Is lfuc but R ;, false d. A is l'olsc but R is true