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I.E.S-{ORJ) lf)O~
I ol 17
J
MECHANICAL ENGINEERING
~-==:::=:'J
PAPER-II
2,
Match List I 1111h L1st II and select the correct answer using lhe codes given below the LISIS List I A Open loop system B Closed loop sys1em C Step mput 0 , Sinuso1dal utpul List ll L Prequency domain analys1s 2 More stable 3 Less stable 4. Time domain analysis Codes: A B c D 2 3 4 I a. 4 I 1 3 b ~ c. l I 3 -1 d 3 2 I Consider the following statemellts regarding improvement of efficiency of worm gear Uri \·e I Efliciency can be improved ~ increasing the s p1n1l angle of wom1 ~tread to 450 or more 2. Efficiency can be improved b) adopting proper luboication 3. Efficiency can be Improved by adoptong worm diamerer a~ small as practicable to reduce sliding between wornl-tltreads and wheeltceUt 4 Efficiency can be unproved b) adoptong conve,x toolh profile both for worm and wheel Which of the sllttements given abo,·e are correct? a. L2Md3 b
c.
1. 2nnd-l 1., 3:md 4
d. 1,3and~ 3,
Match List I (hems in jooms) wi~1 L1si U IT) pe of frulure) and select
e rorr"ct
answer using the codes given below the Lists Lisr t A . Bolts in bolted joints of engine cy linder cover plate B, Colter in poller joml C. R11•ets in lap joints D. Bolts holding two nnnges in a flange coupl ing List 11 I. Double transrerse shear "2. Torsional shear 3. Single trans' erse shear 4. Tensoon Codes: A B c D 2 4 a. 3 I b 2 3 4 c.
5
4
3
2 2
d. 3 4 Which one of the following statements 1s correcrl While des1gning a parallel Slmk key it is assumed that the dis tribution of force along the length or ~le "~' a Varies linearly b. Is lmiform throughout c. Vanes exponentially. bcong more at ~•e torque input end d. Varies e,xponentially. being less at torque output end mmch list l ( Do iTerent systems) with Lost II tAssocoated termmology) and select the correct answer usmg the codes given belo11 the lists:
List 1 A Riveted JOintS B. Welded joiJlls C Leaf spri11g> D. Knucklejoints List I I I Nipping
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' 11117
2 Angumr movement ,,.
...
Fulloring
Codes: A 3 I
"·
b.
6,
7.
2sin tt p W(R-r·J b. 3sitH.I
Fu~lon
13 2
c
))
I
4
2 •I
3 3
c.
4 c. 2 cl 3 4 I 2 Ln o caller joinlthe widlh of the cotter at the cenh>: is 50 mm ami its thicl.:11ess is 12 o~m. Tbe load ~cting on Ute cotter i~ 60 kN. \\'hat is \he s hearing strcso dwelupod iJl the couer? n, 12il Nlmm: b. 100 Nlmm 1 e, 75 Ntmm 2 d. :iO Nimm 2 Match J..ist I {COUJtlmg) with LISt II (PW'J'05c) and •clt:el the corr~-ct finsw~'f lllling the cocle.• J!fvon bclo\1 tlle Li~IS: List! A Muff coupling D. F lange coupluog C. O ldham's coupling D. Hookar's joint Liht n L To
tramunit
powe1'
beLween
two
transmit
powar
be tw-e en
two
d,
r"odes:
A n.
s.
B
C
U
4 3 2 h. J 4 2 c. 3 2 4 d. 3 4 2 Which the f<>Jiowing is the Cllrrcco expression for the torque (runsmittcd by • C()ni<:ll l ciutoh of outer radius R. inner mdtu.~ r und semi-cone angle u. assum ing uniform pressure? 1Where \1' = hllll l :txinl load ~nd f.l. : cce1Jiclen1 of friction\
•m• ,,r
Which one of the following is lite value of helix angle lor ma>
; = tao ' u ) a. .as• + {!
10.
I t.
inte~ect ing
shafts with lle:obility ~ . Fc)r tigid conncetwtx:n twu oligncd s!JaJts tor pow~r ltnnsmis~ion -1. For fl""ibl" connection betwc..n two shotAs witl1 .some mjsalignmcnl for tmosmitliog power
3sin a( k' - r')
3pW ( R' - r')
parallel sh:d'ls 2 . To
2pW(R' t' )
12
b.
.as•
.15"- 1{1 / 2
d.
45"+ ~/ 2
1/1
\Vbidt types of gear• ore used tor • hoft ""'"" having o.o offi;et'/ a. Mitre gears h. Spirnl bevel georo c. Hypoid geo!ll" d. Zerol g.ea~ Which one of the following •talements is C
B. Pitting C. Scuffing
D. Plllstic Oo'Y List D J. Oil film breakage. 2 Ylclding of surfnCI: under heavy load.~ 3. Cyclic ltiads eatbing Wgh surf:ace ttlress
4. Insufficient lubric..•tion Codes:
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o.
13.
A ·2
0 I
c
D
J I
4 4
18.
14.
List I A. lnvar II. Hndliclcl sled C. Stcllitc D. Stainless steel List II I. Manganc'SC 2. Chromium 3. Nickel 4. Tungsten 5. Molybdenum
pCMQ
fllllll
d. petit a Which one of the lullowing smtcmcms is
Codes:
correct? hifls used in ho!avy dttty speed reducers are gencrslly subjecrcd to
a.
und
shearing
1').
d. bending. sheal'lng ond uxiul thrust simuhaneousl)
16.
17.
'I he dinmcter of u sbatl is incr•llllasciJ'? a 2 times b. ·I times c. 8 times J. 16timcs lt is seen from the curve tlmt tl1ere is a mininnun value of lhc co~nidc:nt or ITictiun (J.I) for n pitrlillulnr value 111' the. f3e>lfins ChuracJ
b.
Eutcc.ti c,~loy
c. Hypo cutcctoid alloy d. Hypcr~utcttoid allo~
ll
5
I
('
D
2
3 2 5 4 5 2 l I l llm\ ing kad - tin phase. diagmm given belm.: c,
strCS$CS
15.
A b.
a l'lilnding stress only h. shL-aring strcs~ on I} c. combined benoing
using the \!Odes given
below U1e Lists:
b. pscct:t
c.
t~nS\Vcr
corn:-c.t
h. 2 3 c. 4 ~ I 2 d. 4 I J 2 A helicuJ gewr has the uctive face widlh cquul to b pitch p nod h
a.
.l .... 17 Makh List l (Name of alloy) "ith List Tl fMnjor nllo)' in£ elements) and scl~ct the
300 lo-
L
200 ~(~"-~D·~?, IL
100
0%
20
40
Conwelllon -
• fl
60
\
80
100'1.!
01 Sn
For which one of tbe following alloy compositions, tl1c alloy will have Ut<'
20.
luwest mdlin!j point UL 185°C'J a. 20% Sh and 80% Pb by weight h. hO% Sn and 4(1"/o Ph by weight c. 97% Sn and 3% Pb b) weight d. 40% ·n und 60% Pb by weight Match List I (Name nl'trC<~t mcnt) with List II (Media ~cd) and select the corr~ct answer usi11g the 11dt:S given hdtm the Lists Li.s1 A. Pack cnrburil.ing B. Gus curhuri1ing C. Cyaniding D. Nilriding Lis t II I. i\mmonln gus 2. &ldium cyanide
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.lntl 7
21.
3. CMburizing compound 4. Ethane
D. ExlnJSion moulding
CodeJ~;
I. Mould cavity must he he3ted to cure the plastic forc.ecf into it 2. Similar to Hydraulic exlrusion "'· Ana logous to hot pressing of powdered met• Is 4. .'\Jtalogous 10 die casting oJ' met.> Is
Lis!
A
B
c
D
n.
.~
4
2
1
h.
? J
3
4
c.
I
2
4
d.
2
4 3 l(>llowing pairs: Heat treatment ond e tl'ects on medium ~rt>on steel I No•malizing: Grain refinemenl 2. Full anneati.ng: llni1bnn graiP •lructurc 3 Martempering: Decreased ductility 4. Spheroldizing: MaKimum sotlne!s Which of lhc pairs given ab
('odes;
C'on~i(ler lhe
24.
a. I and 2 b. 2aud 3 c. 3 and~ d. L 2. 3 uud ~
22
Mntch List l (matoria l) "' itb List 11 (Typical usc) and soled the correct answer
using the codes given below lheLi$1: List I A Branched polyeU•ylene a. f'oly<..,;ler C. l'olyvinylidcoe chloride D. Lin.:nr Pol:;ethylene Li~l
., .,
23.
B-
•• 1,).
A 2 3
I
4
D 3 2
~
2
1
4
3
C
4
d. 3 4 I 2 Nbtolt List 1 (Steel !yp<>) with List II (Product) omv $clout the con'ecl answer u~ing the e
L Screws 2. Commerco>l heams 3. Crane h11oks 4. Blanking dies Codes: A A c a. 2 4 b. 3 ~ 2 4
u
1. B()nles 2. 'I ex tile fib= ~ . Ftlms for p:ock~ging 4. 'I ra~parcnt film Codes: c I) 13 A -1 I n. 2 4 b. 3 2 c 2 4 d. 3 2 4 I M•tch List 1 ('1 ype of moulding) witl1 List 11 (mechanism involved) .tnd 5olc-ct ll1e correol answer U5ing. the- oodcs givoo below the l,i•L•· List I A. Cnmpression rnouldinv ~. Injected moulding C'. Jet moulding
u
25.
0 3 2 3
d. 3 4 I 2 J\1'.-lch List I (Al loy) witlt List II (Appli..:ntiou) ~rid •dect 01o. cmtoct answer using lhc codC!i given bcJow the Li$13:
·List r A. Silicon steel El. High carbon steel C. High •reed •ted D. Monel metal List U I. Morine bearln~ 2. Cutting tools -"· Springs 4. Trnnsformer lomin31ions
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Codes;
26.
.\ I
"· b.
4
c.
~
"
ll 2 ~ ' 2 3
c
J)
a.
':0
4
b.
2
1
c.
3
I
d.
2
4
29.
Consider the fo llowing sutements ln comparison to hot working, in cold
working_. I. higher Pnrces m: required 2. no hcatinK Is required 3 less ductility is re<(U ired +. betlcr surfa~-,: imisb is obUJiued \l' hich of the s btements gh-ett ~bove areco rte~t 'l
27.
28.
a. 1, 2 md 3 b. 2 nod ~ ..:. l nnd3 d. 2, 3 md 4 ColiS idcr the following [~clons : I. Size nnd shape that .:an· b~ produced economically 2. Porosit~· of U1c ports prQduced 3 Availahl.c pres• cnpaoity · 4. High density \\~1ich of the above ore limitations of po wder mt:!allu~;gy? n. 1.3 :md4 b. 2 >nd3 14 I 2 :ond 3 d. I and 2 Match List I (Welding problems) with l.i~t n (C'3usc:g) liUd select Ute COJTC<:I auswcr wing the codes ,given below th_uLists Li$tl A Cmckiug of weld metal B. Cracking ofbaso metnl C. PorQ$ity D. lnclusion.•
~
4 4
·'
2
c 5 1. ~
..
3 nr 17
D ~
I
3
3 2 C"on.,idet Ihe li>llowing stntement.: 11te siz.e of the heat affected zone (111\Z) \\ill inc.easc with I. increased st&ling tempet'lllnre 2. increased Wdltljng speed 3. increa~ed thermal conductivity of the' base mclll l 4 . incr.,••~ in ba>
3U.
d. 2 and 3 Consider the following statements : The
m•goitude of residua.! stresses 'in welding d..:pends U(!On I. da!tgn Of\,cldmcnt 2 sup(!Ottnnd cl3rupiug of "omponeuts ~- wotding process used 4. amllllntuf metal mdtodldcfl(lsiled Which of lh<> s talerueuts given above >J'e
31.
oon·t.:c.l'i n. 1. 2 nnd ~ b. I. '2 and 3 c.. 1 and 3 d. 2and 3 Tite cutlinj! •peed of a milling cUltCl' while cutting bm~s is a. 45 t·o 60 m/mm b. 3(! to .W m/mm c. 25 t·o 35 mlmm d. 15 to 2!) m/mm In a machining operation chip thic~'llei'S rntio i• 0.3 ami the back rake angle of the tool i>. 100. What ·~ the value, of lhc; shcnr Strain?
•• 0.31
3. Poiluro lD remove ~log from previou•
b. 0. (.;
depo!iit
alUto$ph.,,.e Codes:
13
c, I lllld 4
ListD l , E..xceo.~iw ~tr
4. Oxidation 5. Excessive H,. 0 1, 'hi:. in the welding
.\ 2
c. 3.tl(l d. 3.34 33.
Consider the following •lalemcnls.
The helical flute in lho neceSsary
:t
twi$1
drill prm ides
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I . clearance Mgle for the cuning edge 2. rake angle for the cutting edj:e 3. sptlCe lor th~ chip to come tlui during drill ing ~- guidance lor the drill co enter into che ''ork piece Which of (he s tat"nwnls given aiJIIV<' arr
3M.
correc1·/ a. 1 ~nd 2
b. S~t c. 1%
b. 2 and 3 c. 3 and 4
d. 0.5% A bar of copper and steel form u
39.
composite system. T1tcy are heated
II. I and 4 34.
35.
Which one o f the followiug Sl.11ementS is con·ect? Antifriction bearings are a. sleeve bearings b. gas lubricated bearings c. ball and roller bearings tl. journal bearings Consider n 1wo dimensional slate of stress given for an element as shllWn In the diagram given below
200
y X
M~
40.
1tOO MPa
~
MPa
'--~T.---' 100 MPa
What are the coordinates of the ceotre of Mohr's circle?
a. (0. 0)
36.
(;of 17 A bar of length L tapers uniformly from dinmctcr 1.1 D at one end to 0.9 D at the Otl1er end. The elongation due to ~• io l pull is computed using mean diameter D. What is tltc a_pproximatc c1nlr in computed elongation? n. I 0~.
b. (100.200) c. (200. JOO) d. (50. 0) The modu lus of e lastic ity for a material is 200 GN/m: and Poisson's mtio is 025. What is the modulus of rigidity? !!. 80 GN/•nl b. 12) GN/m' c. 250 GN/m~
-It ,
WhiCh one of the following is cornect 1n respect of Poisson 's ratio (v) limits for an isorropic elastic solid? a. - ~ v s c:c b.
1/4
on two supports with equal ovorbnngs of L on either sides and L'U rries three equal loads. one each at fi·ce ends and the third at the mid--$~an. Which one of the followin~ di:tj,;flllllS rcpreSCJiiS correct distributiOn of shearing lon:e on the beant7 !L
I
L[=l
I
I
b.
Lf
.LJ
~.
[j
s v s 1/3
c. l ~ v ~ t /2 d. 112 S v S II2
a
d. :ixlr(l A beam of leng01 4 L is simply supported
cL 320 GN/m~
37.
I()
temperatur<> of 40°C. Whm type of stress is induced in !he copper bar? a. Tensile b. Compressive c. Both tensile and compressive d. Shear A cube with a side length of I em is heated I =c above the room uniformly lcmpcratllrc and all the side$ are free lo e>.prutd. What wi II be ~1e increase in volume of the cube? (Given coetlicient of thermal e1
d.
LJ
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42.
i\ ,
A/)~m l
47.
~
Whnt is the mtl.,imum shear force in lh< beam?
a Wl14
d.
b. Wl./2 <:. WUJ
d. 43 .
-I H.
wuo
A c..ntilcv~r beam u f l~nglh I is !luhjeotcd to a concentrated load P ma distance nf' //3 from the free end. Whm is the dellection o r tJac free c11d of d1c bl'lltn'! (lo/ is the llaxural rigidity)
81/:i/
h.
3PI' -81 £/
c..
t•ppo~it~ ~XtNmc ~nd t>f' lhc venicul diametrul 11hre is sul,.ia'ted 111 tensile/compre$siW ~tress on I) c. Every ~int on the surlb.~ of 1h~ shall is subjected 1t1 maxi111um shear Stress only d. Axial longitudinnl librc ..r the shall Is ~uhjecttJ In comprcS-,il'c Slrc>·s only A mcmoor is subjected I<' tl1o oomhinecl action of bend ing IJI(1111Cnl 4UU Nm ~tnd torque 300 Nm. What respectively arc the cquh•alem bending moment and cqu i valent turquc.'! a. 45(1 Nm und 500 Nm h. 900 Nm and 350 Nm
1 ~1'/'
Nil;'/
151'/ 1 81/!'{ What is the natur~ of dlstrlbution or shear >tr.:$S inn rcctnngul>lr beam? a. Linear
b. Pumbolic
45.
c. Hyperholic d. ElHptic A solii.l circulur rod AR <>F b. 12 1'/ n l) '
"· s l'ht u' ~6.
.1. 4 T/n I) ' A spriug with 25 active coils cannot be accommodstou within " givcu >p!lce.
compressi-ve s1ress onl)
b. f hc
d. - -
44.
suo
A shall is subjected to simultaneous action of a torque T. bending moment M nod an axial thrust P. Wbich one of tltc loll owing state111enls is ct•rrecl 1\•r this si1Ualfnn7 a. On~ L\\trcmc end of the vcn ical uiumetrul lihrc is ~uhjec.ted (() ma~imt1m
21'1' ll.
7 of 17 I lence 5 cons of the spring are cut. What is the sti nne~s of the nc.w spring? n. Same a~ the original spring. b. 1.25 times the original spring c. 0.8 timcso the original sprinl,!, d. U.S limlls the original >pring A closely coiled helical spring of 20 em mean diameter is having 15 coils of 2 em dinm"t« md. l'hc rn~>dul u> or rigidity of the material if I0 7 N/cni'. What is the stiflhcss lor the spring in ;'ol/cm7 a. 50 b. 100 c. 2511
¢.
50.
900 Nm und 500 N m
d. .i()O Nn1 :md 500 Nm Match LiSJ l with L1nl II and $CICCI ~1e ('Orn:ct an!')\\ a using the c:c,d~ g_ivl!n below the Lists: Li~t l
A. Wire winding H. Lame's lheury C. Solid sphere sul~jcctcd to unifbrm pressure on the surface P. Aulnfrcuagc List Ll J. Hydroswtic mess
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8 o f 17 A metal has fiC'C ~u-ucturc. Suppose lis atomic weight ond atc1mic radius is A and r rc•pcctlvely. Let N de11Qtes Avogadro's number. Wh•t i• ~~~; dens ity of lbe material? .I
2 Strengthening ofthio cylindrical ~hell 3. strengthen in.!! of thick c.ylindrical >hell i. Thi~k cylinders
Codes: A 4 4
f.l 2
C
l
D 3
2
3
l
2 2
•I
3
"· b.
c. d 5 1.
b.
4
3
A thin cylindnc. l •hell of diameter d lot18th I ~nd thickness l is subj ected to on iutcrnal I>I'CSSUI O I'· What L• tloc mtio or llmgituduuol •train to houp strnin in t
"· h. c d.
m- 2
\:,
d. 55.
lm 1 Ill 2 2m J 2m I m- 2 2m-l m- l
56.
n. maximum at rndlus r ._ a b. maximum .1L n.1diul'J r b
53.
..r;;b
con"""'
d. l'our columns of same materia l and same hmgth nre of rectangular cros~-section of same breadth b. The dcptl• of u,~ cross sectron and dle end condition" nre. however different ure given as follows u >lumn Deptlt End contfiliolls I. 0.6 b f'i.~ed-Fi.xcd 1. b Pixed-hiltged
3. LO b Hinged- Hinged ~- 2.6 h Fi
d. Column 4
A
sJir' ,. .
,,
J6.Jfr'N
Coruoider
the
following
temperature
l. Room tcmpcralurc 2 Oto9 tO•C' 3. 9w•c to 140o•c 4. l .lQO"C tu helo" melting point In wllicll of tlu: above temperature ranges fe1Tih.: wi.tb body centered cubic su-uctw-u t. indicatettributes 1. The lower cotttrol limit is non-negative 2. Normal di>lribution is the order tor Otis cMa 3. The lower conu·ol limit is nut ~lg.ni'ri¢.10\
4. The.s" chnrli give the ovcrnge quality charncleristics
u.S
u~
4J2r'N
t'ilngt;s:
A tl•k'k cylinder of intcn,.J o·adius a and extetnJJI rodiu• b is subjected to internal pre.sure p as well ~· external premtre 1' Which One of the following stakmct~t~ is correct? ·nte m•J,'llitude of circum.f01't:UU41 wess dcn,..loped is
c. maximum at t'ndjus I'=
.~
57.
Whtcb of the statement~ ginm above are correct'/ ;,, t, 2 and 3 b. 2. 3 and 4. c. L 3 Md 4 d. t. 2 aod~ In CM~ of solution of a two""' iablc linear progranunins problem by gnophical method one constraint line comes parallel to the objective function line. Which one of Ute following is correct'/ Tu~ pt'tlbl~m will ha...-e a. infc:~sible solution
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b. unbounded solution c. degenerate solution
cl. infmite n umber Qf optimal ,.,)uticms Mntch Llst I (Techniques I Method!) with J,tst II (Models) and sel~ct th~.: com:ct answ« usin.s the codes s i Vt11 below Ooe Lists
62.
List I A. \'ogcr s approximation muthod B. Flood• technique C. Two plme4flothEd D. Cra£hing List IT
a4 Arrival t.1lU
2, Tract"J)onation modol
3. PERT nnd CPl\1 4. Linear progromming
A
•• b
59
n
_,
2 3
c
o
1
2
·'
3
63.
c. I ~ 2 d. 2 4 1 3 l'he mnxirnum dist011lon energy theory of tailure js suit.1ble lQ predict U1e f• ilure of which one uf the fulluwinJ! t)'P"-' of rtwfc,ri:tL~'?
60.
b. Average •~·rvice time is greater thnn averageaniva l timu c. Thero i• 1•nly one chonntl 1>f arrivo l nt I"Jndom and lhe ~ervice linte ill con.\IJI.ot d. The 3rrival 4!nd scn ·ice- rate .:.annot be annly>'ed throng)~ any m•ndard statistical distribution MAtch List I (Symbols 1n Flowcborts) wilb List IT (Actio"") und select lile con·cct answer using the codes given below the lis Ill : List I A. Par.,Uelogr3m B. Diamond s haped ho:<
Li•t ll I. Decision 2. Stop 3. Proc.c.ssing 4 . lnpu~nutput
todes:
c.
A .I 2 4
d.
2
.c Nurnbor ot 111JOC>tiot~l should be le.;s 3.
J
b.
b. Number of nllocation• •houtd bu oqunl to m ~ n • 1 c.. Number of allocations should be equal tom • n d. Numlx,-r ~f alloeatiuns should be more
6L
than m n Custotncrw anive at a I.!Ountcr random ly at the rate of 6 customers per hour, The servic.e is provided at lhe co1>nter l>y a server. Th.. rn ~an time of the St;~'Vice is ~ m.inutos per custom~.:~r. 'The servi~ nit.: exponentially di•tribnted. What is the
~qu.al to
('. F.ll ip~.: b . Rectongle
:o. Britllu m~tcrials b. Duc.til<> mnt.:riat. c. Pla•tics d. Composite mattl•ials Which ono Qf the following condition• •hould be salirned lor the •J>plicntion of optiouality test on an inotial solution of lt':losportatiun rnod•l'l tJMIIll I 0 -
or CU!IIoruers
\ervice rate
1. Assignment model
Codes:
?ntl 7 probability tbot • newly arrived cu.•tomer hali to w:tlt'l a. U.40 b. 0.6 c. 0.61> d. 0.8 Which t)n" oJ the fi) ll.nwing statomcml!< is co=t2 Queuing tlu:c>ry is npplicd best irt situation~ wb(,..'-fc
64.
B
<"
I)
2 4 2
3 J 3 Which one of tbe follow ins statements Is
..
co~t'l
u· the •iz<> of d n.vwhQQI in a punching m:achine i't 1ncreal!l
b. U>oo tlte llm:luotiuu of speed " ill dc.:rca•c aud tb" Ouctuolioo of cucrgy wtll increase
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c.
65.
the lluotu#lion of sreed will increa.'le nnd the nuctuation of energy 1• ill decrease tl. U1eu Ute Jluclualiun of speed nnd fllwlualiou of energy both will intrt"nse Which onu of tho following driws is used lor a ron•t·ant veloc ity ratio. po.,tive dr
••
Otetl
70.
a... Gc:1r c.IJ'ivct
b. F lat bolt drivo. c. Chau1 dJ'jv~ d. \ ' ·boll drive
66.
71.
What is the valuo of the r.dius of gyrntion of disc type 11ywhccl ns compnrcd to rim type tlywheel for the s•me diameter'!
"· Ji time;
(, 7
1>. 11-/i lim"" ~. 2 timcs d. ll2 times Consider the following st~tentents I. RAM is the place in n compttter when> Ute opcrulin~ system, upplicuJiqn pn>gnun s~
d. Zinc 72.
kept 2. Oob in RAM ~t.1ys there only os tong as the .:!
C(m·ect7
corruct? L ottly
n.
73.
c. Bolh 1 11nd 2
d. NeiU"'"' I nor l A ciroulnr rod of dinmotcr d is welded to a Hat plate along iL• circumference by lillct weld of thickness t A~~ubming 1w '3s the ~llt>Wohlc .shear slr<:l!,, for the weld rtHtl.erinJ_, wbnc is the va lue ur the: '\.flfe torque that can ho lrans rn i1tocl? Q,
:rd'-.t.r..,
b.
--IT
c.
d.
69.
iTtiJ
?
"
~rd'
z,f/ r,.
,.,,,
-:ri'r• ·n,. r•tcd life
of • ball b..aring ,.• ,.;~.,. invetScly as which one of U1e followu~g'l
I only b. 2. on·ly c. L~otlt I or 2 d. Neither l nor 2 Cort~ider the following stateonents: I. The dal• in ROM t• lost when th" computer p0\1 or t~ turned ou· 2. ROM contains tho progrttnuning Utot allow• lite computer to be booted up em:h lime i·l is h•rnad on Which or the statement~ gh·en abov" i. 2o.nly c. Both I or 2 d. Neither I nor 2 A!>sertion (A): All motoo vohicl<8 have diJici'Cillial genr mecltuui•m at U1o> bock a.
Whicb of Ute statement• given above io'or"
GK
C'o~Uider tlte following statements
I. The openuing system mus t be rle&igned to "0t'k with Ute JlattJcuJar ()l'(lc<:ssor'• ••• of instructiOll> 2. 'lhc tcm1 processor bas gt.mcruUy roplaced the temt CPU \Vh.ich ot'the statements given ubm o isl•re
:md cl:!ht in cwTen t 11se :rr<:
b. 2only
lo,d b. (lo•d)1 c. (load t3 d. {loPd)3.JJ A•mming ntoms to be perfect •phere$. wh"t is the value of floe highil81 possible ntom.ic p•cking J·3ctor (APE) in m•tJis? • . 0.95 b. 0.74 c. 0.66 r()viog the slren~th ul' Steel ut clcvntcd tempcr:•turcy, which nuc of the following alloying element i~ used'/ a, Copper b. Tungstcm c. Aluminium
74.
a,'\Ole. Reason (R): Thi• mechanism is lilted to enable the vehicles to moon bumpy roads. a, Botlt A aorl R nre iodividunll)' lrt•e and R.. ill the COIToot cxplonotion of A
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75.
b. Both A and R..1re individlllllly true bm Rill not the correct explAnation of A c. A i$ tn1e but R L< fal•e d. A is fa lse but R is true Asserhon ( A): A ~ound lv~ldcUid nut only he •trona enoush hut shuuld •l•v c.xhibit " gvud bmount ot'
7').
du~tility,
76.
R"ll•on (R): Welding proce..s is used 1'9< fuluicating mJld steel components only. n. Both A and Rare individuolly true ond R. is the correct explanation of A b. Both A and Rnre individllliiJy true hut R i! not Ute correct c.>cplQnation oft\ c. A is lrue but R is false d. t\ is fat.c but R i• true N-~<1'11on (A): Ductile materialli gcnorafl)' ab$orb more impact loading thnn a brittle m:ttcrinl. Reason (RJ: Ductile materials geuer:~ll~ bave ltigh<:r uiLillL'IIc str~ngtl1 than brittle
go,
rna lerlals,
77,
78.
n. Both A and Rare individunll)' lmo nnd R. is the correcl explanation of A \l , Both A and R.1re individually true but R is not ll•e correct explnnalion (If A c. A is 1rue but R is fal>e d. A is fal>e butl:t i• true As~ertion (A): Cold working of melli!K resull~ ir1 incr~pl•nati<>n ol A c. A i• !rut; bill R Is faL;e d. A is f•lse but R is tnte AMertion (A ): In electrOtr bearn welding rtoccss, V:JC.UUJ,l\ i:s an t:$Strntial J)J'th.:CSS par:• mul~r
Reason (R): Vacuum provide;, a hlghl) eflicienl sh ield o n weld zone. a, .Bofi1 . \ and R are individuolly true nnd tt. is Ihe corr.:ct explanation ~fA h. Bolh .-\ and Rm·e individWilly lnrc bur R ·~ not the cOm.'cl L"llplaualic>n ul i\ .:,. A i.• true but R i« fal$c
II oll 1 d. •\ i• fnlsc but R i• true "-'-•anion (A): 1'hc rntio of onc ul chip thickness In aclna l chip thickn""" is alway• less than unc: anti is krm«J as cutting r-atio in orthogou1tl cutting. Reason !R): Tbc f rictional fore~ is n-ry high due to lhe occnrrence of slicking friction rather than sliding friction, a. !3oth A and R arc iudiviuuo 11)' truo:- and R.. i& Ill!: cotTt-c! cxplanotiM of:\ b. BoU1 A and Rlll"~ individual! I lrU~ but R is noltbe corrocl explannli~n of A c. A is bue but R is Elise d. A 1• false bul R is true One brand of miUins mnchlne hos th e following lwo inde>r plates "''PPiied olong "ith tl1e indexing bead : Pl3le I : 15. 16. 17. 18, 19.20 hole ~ircles. Plttic 2 : 2 1. 23. 7.7. '29• .•1. 33 hole circle::<. It is proposed to ruiU a spur gc:ar ut' 28 tt-eth using simp le iudex.ir1g method. Which one of' tl1e following combinatioru; of index pt.Lie and number of revolut ions ls C<>n't:c.l?
a. Plate 1: I ,·evo lution a1tu 9 hoi"" in 18 l10le c irc.le< b. PL1te 2 : I J'CVolution and 9 holes in 21 hole circles c. Pble 2 : I revnlution and 9 holes in 33 hole circl01 d. Plate 1 I revo lution ancl 9 hl'les in 15 hole eitcle..
81.
Mn kh L"r T (Coning tools) "' ilh Li•l (FcnlurcsJ nnd select lhc com:cl
using Ute c/l(le>; gLVen below the Li~ts: List r A. Turning lool
a. R""m"'
C. Mming eurter .List It I. ChiJ;el edge 2. I'lures 3. Axin l relief 4 . Side relief Cooes:
a.
A I
b.
~
"·
4
d.
B 2
,"
2 3
('
3 2 3 2
n
:ms" ct
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81.
i\·lntoh 1 isl I (Milling problem ) with l.ist l1 (Probnble t ause.) and select the com:ct ans~""' usin~ the codes given below 01c Lists list I
S5.
deterioration of tool edge L1kes pl•ce
because I. flank wear is only marginal 2. Oank "cnr Is large
A ChaUar D. Poor s ud'acc lioish C. Loss of,ceurncy
of tbo
tool
increast..--s
Which <.>f !he •r••¢n•ento gillen C(Jrrect? a. I and 3
aho,·e are
b. h nd4
3. High cutting lond 4. Radial relief loQ greql 5. Not enough luhricanr
c. I ;md 4 d. 2 and 3
R6.
c 5 ·'' 2
I)
3
~
3. Compnlal'1s machines
Molch List l with List 11 and ""leer lite cont:cl answer u.rri.Jtg lhc cudcs given belo1v O.tc LL,l• L.ist l ,\ , Pbn approach angle B. Rake >Ilgle
s
4 5 c. 3 < d 4 2 3 Consider the followmg characle•isti"" I Single mach ina tool 2. M$nlllll mateoals handling •Yslem
('. Clearonce angle D. Wedge angle
Li•tll I. Tool fnoc: 2. Tool flank 3. Tool t1tco and Ibn~ 4. Cutting edge, 5. Tool nose
111
Wl1idt of lite• nbovu dtrrract~Ti~lies ore associolcd with Oe,
n.
incr(::ISCS
of
dra~licnlly
bar or workplnce
13
lool
4 . tompcl'alurtl
2. Lnck of ri_gidily in rnochine. !lxtures.
A 2 2
leu\p~111lUrt!
gndually
D. Culler bum•
a. b.
l.il~
3.
List II L Too high feed
<'odes:
~ ~ " ' 17 Con.idcr the follo1' ing •laLcrncnts: During the third stage of tool-we.1r. rnpid
Codes;
c
1~ 2and 3
b. 1 and 2 c. 3 nnd 4. d. 2. 3 and .1 Conis aO'ccL
87.
D
2 5 ~ 3 2 4 2 c. 3 d. I 4 3 5 )\•I•U:h Listl (Cutting tool m;terials) with L.ist U l mamttucruring Uttthods) and so loci lit~
eorrcct
nJISWtr
using Ute uodes given
below the Listt:
Listl t\. HSS B. Slollilc C. Cemented carbide
0 . UC'ON Lislll l. Costing
2
Forgin~
" · RoiiJng
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13 of 17
4.
ExtrusiOt\ 5. Powder met.rllorgy Cod
4
D 2 3
C. Electro-
4
2
4. V 3cuum
~
5. Air
c
h. c.
7 3
5 5
d. 8S.
2 1 5 ·' The mke •ngle of " cutting tool ts 15".
C'odes;
sh<:|
92.
A medium c:~rbon tb:e:l worl]>iece i5 lltrned on a btbe • I 50 m; mm cutting speed. 0 8 rnrulrev feed and I 5 mm detllh of cut What is the rnte of meh,J ren1o\'ill'! 1
•· I 000 n un tntin b. 60.000 mm·' min e. 20.000 mrultmill cl Ctm not l,c caleulntcd with U1c. given
Contiuerthe following st41emcnts I. A• the cutting spoed incre:IS
93.
increases
·2 At, the culling speed ln<:~·eases lite C{).St of produchon ~)so increase$ ond :rile; ~ crilical value it roou.:cs ,. Higher feed o'llt c for the same eull.ing
spcoo redu=
C(lsL oCr roduot ion
H.lgh~'l' f"rr...1'/ ~. I ond 3 1>. 2 ond 3
4.
91.
Li
c
u
n.
5
4
l
b.
4
5
2 I.
c,
4
2
d.
c. 25..3 mltnin d. '23.5 m/min 89.
A
94.
4
'
5 4 2 ·' C'onsido;:r the foliO\ving lits 1. l,l'. enginecylinde-rand piston, 2. Ball hearing outer tace and housing 3. Ball be;oring mner r:u:e ami shaf\ Wbi~h of \he abo\'e 1116 are b..ed on the shaft basis system'/ a. land 2 b. 2 and 3 c. l and 3 d. l, 2 aod 3 Consider Hoc tollowinl!. alignment t"'ill! on· mach inc too 1$ L Stral~htncss 2. Fl>lltl!li$ 3. Run Olif -1. Pora llc!i.m \Vhic.h of th~ nbt1vc :tlignmcnt tests o n m.• ch.ine lnot• are ~ommnn tu both l:othe and shapc:r? a. I and 2 b. 2 and 3
" · 3 and 4 d. t and4 II is g.i\'en Utai th.e· acton! denMnd is 59 uniL•: a prcviou~ for cru;t 6-1 units und smoothening f" cto r 0.3. \vb.,L will be tlte
c. I ood ~· d. ~ (}nly Match List 1 (Machinong proce;ses) wilh List ll ((Jperaliug m<:di11) nud solecl U1e cotTcct an.SWC1' us ing th~J oodcs given
below the !..ists f,i.st I A Abrosive j et mnehining 1:1. E:lecll·on b.:am m•chining
_,'
95.
foreca•t for next paril>d. using e.xponential smoothin g'/ a. 36.9 unit• b. 5 7.5 un il!l c. 60.5 units d. 625 units Tile· demand for a product in Ute munU1 of Mnrcb turmxl oulto be 20 unit.s ogoinst nn earlier made forecas t of 2() units. The
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Pot 17 produetion quantity. the tot. I cost of X ond Yare equal? a. 120() units
octu~l
demond lor April ond May turned to be 25 und 26 unlh respccllvcly. What will be tl1e li>rc.1st lor the mouth uf June. us in~ cxpon~nlial ~moolhing m~lbud ond taking smoothing corm:ont a'" 0.2? n, 2\l un itw
h. 22 units c, 26 nnit~ 96.
b. 161111 unit~ c. 2000 units d. 24110 unrts
99.
d. 28 units Cor~•ider- the tollowingstalemenls : I Preparativn C)f '"'"tor prod·,rction ~ch~tlule i~ an iter:nive- process ' l. Sclledule charts arc made with Je»pect to job• while load chnrts are mad" 'villi
poml'/ FLutl ctJ>' I (m R.·.)
rospod to machine-s
3. MRP is done before mast~'f production scheduling Which of the smtements gjven aoO\'C arc:
I()().
~orreel'/ a. 1.2 oud 3 b. land 2 c. 2 and 3 d. I •nd 3
97.
Match List l (PPC functions) with List U (Activity) 4nd scloct the COITe.!l IUl•Wer using the codes !!iven boiO\v the List• List 1 A. Capacity planning B. S hop floor control C' 1\·lo•ter proclucti<)n schedule f) , Material requirement pl>tming J. be: doliv<>re
+.
•. b
"'d. ?R.
C
D
l
4 2 2
3 1
2 4
3
s
5 4 2 Pr,.ee., X h~• li"ed <:ost of R.. 40,()Qt) :on
l m1it (u1
lliJ
Ret'tnue/ (u• Rs.)
,.,it
40 a. 30,000 10 4(> h. 40,000 IS c. 50.000 20 40 d. 60.000 30 40 A cnont>an~ hos four wm;k C0111erll A. B. C :tnQ D. with per d;'.l C-'I J)acities M 450 units. 390 uoit~. 3()() unilS ond 40\) unit< tllspeclivch•- The moch.in.es are l>id down In order A. B. C. nnd D nnd produc.t has lo he ot>OT~ted on all th
101.
d 85'lo Consider Ote following statements with respect to PERT: I. It consist~ nf ae1iv itios wi1h uncertain
time pllliS~ 2. This is e"oh·ed from G•nll chort. 3. Tutol s lack nloug Urc ·criticn l p•th is nut zero
their status 5. Pbnning. of labour .1 nd equipment Codes;
B
Vuri111!/~ cod
c. 80'1.
Monitor progr.:ss ol'
A
Which one: or II~ following i11fonnati<>n combinutions has lowest hr~ak even
102.
-1. 1ltere C
A. Jnb enrichment B. Job evaluation,
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15 ,,, l7
C. Methot! stutly
D. Tinm ~tudy List II I. Gilbretl1's principles 2. Movement of limbs by work f.1cror system
I05.
d. 72.5 mm llto double slider-
3. Hertzberg molivutors 4. Jacques time span ordisorecloo Codes;
A
B
C
P
2.
2 I 4 3 b. 3 4 1 3 c. 4 2 d. I 2 3 Mntcb List I \QWJiity control concepts) wiU1 List Jl (QuaHty control techniques t and select the corr~ct answer usin& tbo codes given below the ~ sts: List I A. Tightened and reduced inspecti
I {13.
3. MIL s tandard~ 4.. ClllurOI chart
f
numb"r
J.
4. Which one of lhe follow in!' staten tents
is corn'<:t?
a. lnwrsinn ( I ) is fhrellipse trammel and
of
no neon fom1ities Codes;
I(14 ,
a. b. c.
A 2 3 2
d.
3
B
c
4
4 I
4 I
4
D 3 2
3 l Quality contro1 chart for averages was maintalne.d for a dimension of the product. Afte.r the. ctlntrol 11•a-' established, it Wll< towtd that the standard tie' iation (a) of the pmccM was I.OCI mm. !'he dimension of the pml is 7CI ± 1.5 mm. Parts nbovc 72.5 tmn cau be r"work"d but parts beluw 67.5 mm l1ave to be sorupped. What should be the setting of tlte process to ensure production of no scrap and tu minimize the l'ework?
a. 68.5 mm b. 70 nun c. 70.5 mm
+ + +
106.
inversion (2) is for Oldham coupling b. Inversion C.1lis ft>r eUipsotrammel and inversion(3) is for Oldham c.Qupllng c. Inversion {2) is fordlipse trammel and invcrsi(ln (3) is fnr Oldham coupling d. lnvcrsicm (3) is for ellips·e tramm~l and inversion (2) is for Oldham cnupling. ABCD is a bur mechanism, in which AD is the fixed link. nnd link BC. is in the torm of a circular Jlsc wiUt ccmre P In which one of the lollowing cru;es l' will he. the instrmtwl~US centre of ~"' disc?
+ e')<
-~
A ..,.,..,.,.,
D
a. If it lies "" tbe perpendicular bisector t>t'line BC b. If it lks on the intersecti<1n of the Jl"rpcndicular bisectors of BC & AD c. Ir it lies on the inturscct ion or til<> perpendicular bis
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lfloll7
I07.
ln the diagram ~iven below. the ma~nitudo of ah.
c. I 8
3
d. j
9
a. (, radians fl<''>ec<>nJ
b.
110.
ABCD i~ a mechanism with link lengths AB = 200, BC r 300. CD - ~OCI and DA = 350. Which one l>f the lbllowing links should l:le li.xed for the rcsulling mechanism ro be a douhle crank mechanism'! (All length arc in mm)
111 .
I6 radilllls per second c. 4 rndlan!> per second d. 14 mel inns per ~oond
108.
a
pluto
a AB
C\.liTr!CI ?
b. BC
In a ~trol engine m~chnnisnt lh~ vclodt) of the piston is ma~imum when th" cmnk
c. CD IV'/.
cum mech:lntsm with roller follo11 er, in which on ~ of th~ folition h. Simpl~ harmun1c molil>n c. Paraboli~ motion d. 3 - 4 - 5 polynomial motion Which 011~ or the following StatemcnLS is In
r~ciprocmin g
is a, Ul ilt~ doad CCiltf\!S b. nt right angles to the line of stroke c. slightly lc.
d. DA l'hc cr.tnk
IJf 1he lll''<'hanistn shnw11 bcln11 1n the diugram rotmcs ut a unifom1 an~ular velocity 0:
]
-'•
11 2.
E
d. slightly. ~b,we ()()• "' line nf slmkc In u di fYerentiuJ mechanism. two equ~l
sized bevel wheels A and 13 arc keyed to the tWO halves of lhc r~Ur a,, k of a m•llur car. rhe car follows a curved path. Which one of the f(>llnwing
Which one or d.1c following diagrams slwws lht vdocity ofsfider .i' witl1 respect 10 lhc crank angle?
a.
·• 8
113.
The 11 heels A and B 11 ill rcvole 01 diOcrcnt Speeds an ~ns is u;ed ~Y a lawn- sprinkler which i; a tour llar mech1u1isms? a. Reciprocating motic>n to rolllry mmion b. Reciprocating_ motion to oscillatory lllOticm c. R
•
d. Oscillatory motion to rot~')' molion
I H.
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-E$2~-s~:@
11 5.
In the. mccl1anism shown above. lin~ 3 has a. curvilin<."& translation and all ]X'> ints in it trace out identical cycloids 1'. curvilinear translation and all points 1n it trace out identical involutes c. li near trnnslation & nil points in lttracc out identical helices d. linear translation & all points in it trace out identical ellipses Cons ider tbe followiog statements 1. C is an object • oriented programmiug like Java 2. c~ uses the same set o l' progl'llmming concepts as those of C Which of the statements give11 nbove is/arc
li S.
d~reases
b. decreases as the equilibrium speed
I tiJ.
COITCCt?
I I 6.
a. I only b. 2 only c. Both l and 2 d. Neither l nor:! Consid<:r the following ntctJJods; 1. Tri filcr suspension 2. Torsional oscillation 3. P'l uctu;~tion of energy ofen~dne 4. Weight measurement & measurement of radius of flywheel Which of the. above methods an: used to rletermino. the polar mass moment: of inen:ia of an ungin• Oywheel with arnls'/ a. I and~ b. 2and3
c. 1. 2 and .3 d. I. 2 and 4
11 7.
A connecting rod has a mass of 0.5 kg. The radlus of gy1'8tiou tl>rough ils centre of g.mvity is 5 em ~md itS '-!Ccdcr~uion is 2 x 10'1 ;,ulfs'. The equivalent two-mass system for the connecting rod has a radius of gyration 6 em. What is the. corroetion couple of the equivalent sySlem? a. 11 Nm b. CJ Ntn
17 of 17 c. 6Nm d. 2 Nm Which one <11' the lb llowing slatemenls is con·eat? A governor will b~ stable if the radius ·of rotation of the hnlls a, increase.~ as the cqui libriu111 ;1x.-ctl
increases c. increast""s as dte equillbrium sp<.-cd increases d. r<:moins unaltered with the changc in eqt1ilibrium speed Which on
110.
maximum value twice. in
on~.
revolution o( the crank c. The hammer blo\\ in the locolt10tivc engines occurs due lo llnbalanoed force along the line ofstroke of ihe piston d. The llnl>alanced force due to reciprocating masses varies in magnitude a"'l dlrectiou A four - ~ylinder in - line reciprocating engine is shown in the diagram given below. The c:)llinrlers ~re numbered I to -1
Frrr~.~
Which ooe of the li>llowing statements is correcrl a. Both primary nod secondary forces are balanced b. Only plimary Ioree is balanced c.. Only secondary force is balanced d. Both primary and secondary fon:cs arc unboll!mccd
