7/30/2019 Mechanical Engineering Objective Questions Part 13

1/13

ww

w.exa

mrace

.com

I .s . -PI'tl 2o06 I ol IJc:=====MECHANICAL ENGINEER=N=G=========.i1.

1

3,

. j,

Wlw is ennched Uranl um roqulrcd as fud11 ~ ordinllf) water is used as amoderator'/a, Ord inary w ~ has 11111 m Q d ~ r a t i n gefficiencyb. Ordinary 11-ater has high neutron:tb$orp tlonc Ordmusy water hus lngh modernttnllefficiencyd. Ordlnarv water- ltru; low neutrQnubsorptionWhich one of the following gases isrtorma lly not Uoed as 11 l u o ~ in nuclearreact{lr'la. Hydrogeo1b Heliumc. Carbon dioxoded NttrogenMatclt Lis t-1 wuh Lls t-11 and select thecorrect MSI\e r using the !,,oiHJt belo11the lists.Lis t-1A Speco llc speed orpumpB Low ~ p e c i k p ~ e d of urbineC Pu rnpong viscous oo lD DralltubeLisHtL ['N(Q) )H' I2. Sere\\ pump3. Reacuon hublnc-1. Turbwe Pump5 Very bif!h specilic speedr, (N(P))H"7 Impulse lurbmeCodes : A B C Da I 3 2 5b " 7 -1 3

~ I 7 2 3Q (, 3 4 5Mnlch Ltsl-1 Lis l-U and select thecon-eel answer using the code g ~ v e be lo11the hsts.Ltst-1

(, ,

A. DralltuboB SurgingC Nr VesselD. NozzleList-l lI Impulse turbone2. Reciprocating pwnp3. Re.aclion 11ubine4. CetHrifugal pumpCodes;a. AI B2b. J 4 2c. I 4 2d 3 2 4

D3J3M&rch Ltst l 1vttb List-U and select thecorrect rutS\\ er ustug the code gi \'en be lowlistsList-.1 (Nan1e of Bo iler)A. Sti rlingB. CothranC LnncashireD. BensonUst-JI (rype)1 Bem water tube1 Once through now3. Vertical Hre tube4. Incline wate r tube5. Jiorizom;ll ftre

C o d e > .A B C Da. 2 5 -1 lb I 3 5 2

c. 2 3 5 jd. -1 1In a steam po.1vcr plnn t, what is lheoutcome ofregenormhe reed heating?I Increase.in spec1ftc output2 Increase in cycle elllclency3. Improved qu.1hty of exbaust s1eam4. Reduced condenser loadSelect the correct anS\\er usmg, the codegil'en bei\JWa. I and J. on lyb 2 onlyc. 2 and 4

www.examrace.co

7/30/2019 Mechanical Engineering Objective Questions Part 13

2/13

ww

w.exa

mrace

.com

7,

8.

9,

to.

I I

'L J. l and3Consider fniiQIVin& ~ t n l ' c : n u : n l ~ in th t;"n t t : X l ofhigh ~ ~ u r c l>oilerR:I. TI>c tlmdcuu)' o( liJnnutiun il!-climin;at lCJI co.M'

H622()

n137

The wc>rknten iJ1 "" t:ngineerin!,\ yare e:cpec ted lo wurk for 4()0 minutes

7/30/2019 Mechanical Engineering Objective Questions Part 13

3/13

ww

w.exa

mrace

.com

17.

19.

13, llttud mollonJ ohould be confined tolowest p o ~ s i b c l ~ s s i f i c t ~ i i o n Withwlioell il is p u s ~ i h l e Ill perlbnn Lhe jobC:. Rbythm i> eMenlinl f ~ t r &moolll andoutommic performai\CC llf n o p e r A T i ~ nI i8t-DI, Tullis. mbl.,rlal and rdt:d b)

Wltilnic. environmLntd. urguizalionnl.Jtru.;ture

21. Which ono of the following lo the baoicobjective of good plan t u t ' ~

22.

23.

u. New pliltli oonslntelionb. Buller u.s oflabourc. Jmprovmu.mt in production process ns. who led 1'o meet

7/30/2019 Mechanical Engineering Objective Questions Part 13

4/13

7/30/2019 Mechanical Engineering Objective Questions Part 13

5/13

ww

w.exa

mrace

.com

33.

ll patabolic and p a r b b o l l ~b, .p:rahnlic and el)iplif,'c. n ~ a r :tnd In pow iT l3wtl. J>arnbolic uud J/7 pow Ill"\Vblcb one of the fo llowing is tho correct tatemeol?!'or the ce of lnminar llow ~ e t w e e n two

Jinlacross pMS>@Cb4 maximum at ccrttN tmd LC:rO .atboundary-:. 7,eto all through Ihe passagetl maxintum at the l10unda1y ar1d YAI'O allhe ceub34. Comido.,- the following .tnlcrucnt5:

COl and throat scclibrt3 Reynolds DJJmber of low4. dfthargeS. length ofthroot

G. diamctll1' of h roat7. ili:unetor rotioWhk h of the smtcutetllS gtvcn .1bovc "" 'e trect?a. I. 2. 4and 5b. I. 2. >lid 7c. I. -l, uud6d. 2. 6 and 135. Which ono of the ful low:ing e x : p ~ theerror in disclwrg,e due to error in themeasurcmt:nl of t ~ ; a ovor a tr iongulurnotch7

JO :; till. . Q ;l 11b. J Q _ ~Q 2 H

JQ 7 dll,, - - -d. JQ _1.!!!!..Q ; ff

36. Wllicb one of the fo Dowing i.\ tltc ~m

A diffc=lio l monomeler connected topifotstatic tube used for measuring llu ldvelocity givesstntiopfQ"s.utcb. IDtal pronwetween Lotti 1'"-"'sun: ;tnddytu!m!e presure

W l i c ~ one of the folltJiving - e c tt:loJ>tCSenl$ Lite shcor st tc" distribution

n l l r o s ~ &Q:tlon o f ~ circulAr pipe havin_s viscous 110'''1a.

iltVJ!( r !)i!.. r ~i lp( r ld. r =--.ir

A pipe or diameter (0 ) eonvey .ng discharge Q Is lo bu nlplncl:d by twoparallel pipes of smaller diameter (d) todischo'lle the same quantity . What will be'"lio of Did'' (f is snwe for aU pipes)ll. Dtd 2b. Did .,fi

c. Drd - 41' 'd. D =f\llllch l.ist-1 t m nf Semnulli 'Equation) with TisHI ( U n i L ~ vf lh t:!lcfurtnJj) Md f O(CCLthe .:0"""-l Dll,

7/30/2019 Mechanical Engineering Objective Questions Part 13

6/13

ww

w.exa

mrace

.com

43.

# .

-15 .

-16.

c. pte>$Ufl!:must decre0$ecl , mumcntum mut d e c r e aWhich ' '"" uf the followinJ! sllciJlmentscon't::CJ?For&llbitity of r Jloa!ingbod)'.a. M hould lie between G and B ( in tl10t

Q r d ~ ~ r

b. M should IJe above B and G (inorder)e>. M should Lie bolow Jl. lllld G (iu tbot

ord

7/30/2019 Mechanical Engineering Objective Questions Part 13

7/13

ww

w.exa

mrace

.com

Sl 1\ ystcm und'T'gocs 3 procell&uurlng which ISO k.t uf heat is adder th" xe n e oflbc1\tliOWiug c < ~ r r c c11. The amount of et1etg) ' 11ljecledmUSlhe 150II The amWol or hc:t( CJltrgy fCJCl!l.;dI I I U . ~ l btt ) t .S l t ~ n I50 k.J.,. TI>c umounl of bol enorgy 11!jeclcd

m u be gteitler tlum J50 I rejc'Ctcd I"'' cycle ti11m thed a t ~ u.ivcn

53 . An ide;l heal pump and .nn iaealre lngcratur whieh arc rcvcrihle int>poralicJ t> ~ l l : l r . l belween same upper budtower la npt rnture limiL. 11' the coefficientof r m ~ t l nf the r e i H : ~ t o r is -1,5 .u,en whnt is the coa01oien t ol' pttfonnance11fthe pump?:11 3,Sb. 5.5c.. 2.5d. 6.5

54. Ar s lllodad diesel i:Q tnpi\.'Sliiott liltio of 1 traMverse

1'11. Cmuicler U>e following

7/30/2019 Mechanical Engineering Objective Questions Part 13

8/13

7/30/2019 Mechanical Engineering Objective Questions Part 13

9/13

ww

w.exa

mrace

.com

73 .

74.

75.

76.

77.

ll 2 onlyc I :md 3 onlyd 1.2and 3W material of Uuel.. ""Ucdcanl>tll'r.l in wl1jch nudcar \VU$le ill "\Juriuddeep?a, 7 i...,air i1wqlvesa. eooling nd hunndificationb. cooling and del\umldificatlon" chang_e.in d"w poirtlt.:mpcraluo'Cd. >nsLmt rol.lliw humidityWhich one af lhe toiiQwing is U1o con'llclstatement'/lu domestic a>r conditioners air u n d ~ r g o e sthe pl'OCt:.'!S ofa. sonslblo ~ o o l i n gb cooling and humidificujjonc. ~ < l O i i n g nod dehumidificationd. dohumtdificutionWl1ich one-lf llt< tollowingl> the ~ o m :statement'?Sensible e ~ t t n g oJ'moist anwi ll nol ~ f f e c . la. n:!ative ltunudityb. obsofulo h u mc, p.,.,ifio llumidil)d. wei bu01 m p c r n l n rWhich one rlf the tollowmg i$ com:etstntcmP>I'I When moist uir s : ; o ~ lhrougha cooling loWer l11e p r u c ~ ls!a. cvopo, .Uve coolingb. difibntic ;,ntnrotionc. cooling und dchumlditicationd. healing and hurnidificolion\Vhioh one of lhe Jollowmg js tllc .:an'e

7/30/2019 Mechanical Engineering Objective Questions Part 13

10/13

ww

w.exa

mrace

.com

In order to main tain the same level ofCumfort,IL Wl3T shttuld be decreasedb. Ol3Tshouldbe increasedc. air ve locity shouiJ be decrcnsLdd. moisture contentshould be increased

85 . rhe comlon air conditioning cnn beobtained D) innmn emb le combin11t ions ofDBT Sird relative humidity. Which one thefoll owicrs c o m b ~ t . i u within the corn fonzone recommended to save the energy'?tt. lligher DBT and lower r e l a t i v ~hurnidiryb. l.owcr DB1 and liJWer relatiYt:humidity.;. LoWt r DBT higher r e l n t l v ~humidityd. Higher DBT and higher relativehumidityBernoulli's cquutirm is derived by makingwhich of he following assumption s?a. The 11nwis steady on lyb. The now is unffomt andincompressiblee. The now is u - v i s ~ uni lorm andsteadyd. The Oow is stcatly, nqn -visrous,incoJnprcssiblc und irrigalionul87. 1 skater weighing I00() N skates ar aspeed or 20 mls on ice maiotained at oc.Ibe average skating llt'e a suppuniug thoskater is 0.00 I 1111 and the coeflicient offriction between tlte skates :utd tee is 0.02 .What will be the average thklmess of 11film ot' ' ''mer cxistin !l, at the interlacebe tween Utesknleruud Ice? (Take dyuruuicvi$cos ity of water as 0.00 I Nsim'l.

88.

a. )() l mb. IO"' mc.. lo' md. Noi pos sible to estimate s ince therecMnul be a possibility of fonnation ofn thin film orwmer 3 ( the interfaceQ '' I' /"' - ~ - ~ ~ ~ ~ L"'i1(01 .I \

... 1 s

89.

ro ur IJA rectangular plate ls held in equilibriumby the opplicn tiM of forces ns sho\Yn inthe flgu re. Whar is the rnngnitude ol'1rce P'1a. 3S kNb. 50 ~ Nc. 100 kNd. 200 kN

The car shown in rhe above figure m o v ewhh a uniform velocity. I f the resistancedue to friction. air etc. i; 30 Nikg mass orcnr, what is the npprmcimnte power orthe ~ n g i n c 7a, :DkWb. 6 1kWc. II SkWd. 13 11.\\>

"" r----...iFll...,.,,''"'"'-Variation o l' actin&on n pnrtiole ofmass 5 kg is shown in the figure above.Wilal is the fura l lclodty of ihc particle lfll is initially at rest'?

a. 2 m/sb. 2.5m!sc, 5 nr/sd. IOm/sn . Which one Qf the f(lllowing is ruptures'tress?a. Breaking stressb. Max.imum load/original crosssecllonalarea ti\)c. Load nt breaking rmint/Ad. Load at breaking poin t/nec k area

1)2. ~ straight unifonn rod is u b j r c t ~ d toload.Which one \If the following is 11\e oorrecrstntemen t'?a. lt .iJ1duCl-"S .Oluxlmwn h ~ . . t r l n g stress on" trarn;versc plane

www.examrace.co

7/30/2019 Mechanical Engineering Objective Questions Part 13

11/13

ww

w.exa

mrace

.com

)3

95,

97.

b. II induces maximum nomtnl stress 1111 nplane incllnetl at 45" to the o.xi> of therud, , II induces maxim um shear SII\!S> on npluno inlined til 45 '" tilt n.xi>or hemd,1. lt includes 7.Alro shcac stress un

indina

7/30/2019 Mechanical Engineering Objective Questions Part 13

12/13

ww

w.exa

mrace

.com

01 .

102.

IUJ.

I0-1.

1(15.

111odulus uf k l t y ~ Poisson 's rnlitt l lnnd of i a m e ~ e r d'. wa ll thickness ' t' ands u b j ~ c t e d to lntemal ll uid -pressure p?iL f l ( ~ . ( 5 - 4 p )4!1::b. ~ - 3 1 1 )c. ;>tl .(J - lp J211::d. fH1.(2-Ji)

/1:.A closed coiled r ~ n s i o n springhaving20 is cu t in IW

7/30/2019 Mechanical Engineering Objective Questions Part 13

13/13

ww

w.exa

mrace

.com

II(),

I l l.

112.

113 .

J14.

115.

c. nyperuolic vttrioliond P.Uiplio l vorialionrn u milling m o two side millingc.ulters ore IIIOilotcd with dc:;;iocti di>l:lnccbc twecn lbc::m &CJ (h:at bulb or lhcwl)l'k piece can he milleol imvlrnn ca) a"IYWhat is ll1i1! eoll11re much thicker their height irn drnwing lf1C1'0i.lon i f Di c UJi6.al

s ~ : t l e r n e n l ' l The nCA.>lr/aC)' nf tim e ostimlllel\in wor'- s:nnpling d e p e n d upon3 . ~ v p c uf activity omlyb. .1\Utttbcr o{'Db !