screening mechanical

7/25/2019 Screening Mechanical

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SCREENING TEST (MECH)

NAME: ___________________________PHONE NO._____________________Date: July 5, 20!Answer the questions given below within 60 minutes. Use blue/black ball point pen.

1. Which of the following materials has maximum strength?(a) Grey cast iron (b) Plain carbon steel

(c) Alloy steel (d) Aluminum alloy

2. Wear resistance of steel is increased by adding(a) !ic"el (b) #hromium(c) $ul%hur (d) !one of the abo&e

'. ot wor"ing of metals is carried out(a) Abo&e the recrystalliation tem%erature(b) *elow the recrystalliation tem%erature(c) At the recrystalliation tem%erature(d) At higher tem%erature

+. When a circular shaft is sub,ected to tor-ue the torsional shear stress is(a) aximum at the axis of rotation and ero at the outer surface(b) /niform from axis of rotation to the outer surface(c) 0ero at the axis of rotation and maximum at the outer surface(d) 0ero at the axis of rotation and ero at the outer surface and maximum at the mean radius

. atch the following metal forming %rocesses with their associated stresses in the wor" %iece. etal forming %rocess y%e of stress

1. #oining P. ensile2. Wire 3rawing 4. $hear'. *lan"ing 5. ensile and com%ressi&e+. 3ee% 3rawing $. #om%ressi&e

(A) 16$ 26P '64 +65 (*) 16$ 26P '65 +64(#) 16P 264 '6$ +65 (3) 16P 265 '64 +6$

7. An ideal gas at 28o# is heated at constant %ressure till the &olume becomes three times.he tem%erature of the gas will then be(a) 91o# (b) :;;o # (c) 728;# (d) :28o#

8. #alculate hoo% stress in a cylindrical %i%e whose dia is 12;;mm internal %ressure 12;"g


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NAME: ___________________________PHONE NO._____________________Date: July 5, 20!:. A furnace wall is 1;cm thic" and has a thermal conducti&ity of ;.1"W


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NAME: ___________________________PHONE NO._____________________Date: July 5, 20!19. Cyebolts are useda. to %re&ent motion between two %artsb. to absorb shoc"s and &ibrationsc. to lift and trans%ort machines and hea&y ob,ects on sho% floor

d. to %re&ent loosening of threads in bolted assembly.

1:. Princi%le of a%%lying heat and %ressure is used ina. $%ot weldingb. $eam weldingc. Clectrical resistance weldingd. All three methods

2;. A =lywheel is useda. to store and release energy when re-uired during the wor" cycleb. to reduce the %ower ca%acity of electric motorc. to reduce the am%litude of s%eed fluctuations

d. any one of abo&e functions

21. n thin cylinders the longitudinal stress isa. 2(circumferential stress)b. 1


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NAME: ___________________________PHONE NO._____________________Date: July 5, 20!a. iron and steelb. co%%er and co%%er alloysc. both a and bd. neither a nor b

28. Fne bar %ressure e-uals to IIIIIIIIII"Pa and IIIIIIIIIIIImm of water column

29. Preferred ty%e of %um%s for small discharge and high heads is6a. #entrifugal ty%eb. reci%rocating ty%ec. axial flow ty%ed. radial flow ty%e

2:. *oundary layer se%aration is caused due toa. Daminar flow changing to turbulent flowb. &elocity gradient being ero at the wall

c. reduction in %ressure to &a%our %ressured. decrease in boundary layer thic"ness to a negligible &alue

';. A &enturimeter is a de&ice to based on *ernoulli %rinci%le and is used for measuringa. Jelocityb. %ressure dro%c. total headd. =lowrate

'1.#om%ressors used in gA$ /5*!C$ A5C F=a. #entrifugal ty%eb. reci%rocating ty%e

c. axial flow ty%ed. all of the abo&e

Danguage Proficiency K Dogical 5easoning

'2. $ureshLs dog is the one 6666 was hurt in the stam%edea. that b. which c. who d. whom

''. 3es%ite se&eral 6666the mission succeeded in its attem%t to resol&e the conflict.a. attem%tsb. setbac"sc. meetings

d. delegations

'+. Gi&en the se-uence of terms> A3 #G =E MP N.next term isa) FJ b) FW c) PJ d) PW

'. A %olitical %arty orders an arch for the entrance to the ground in which the annual con&ention

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NAME: ___________________________PHONE NO._____________________Date: July 5, 20!

is being held. he %rofile of the arch follows the e-uation y=2x-0.1x2 where y is the height ofthe arch in m. he maximum %ossible height of the arch isa. 9m b. 1;m c. 12m d. 1+m

'7.anya is older than Cric.#liff is older than anya.Cric is older than #liff.f the first two statements are true the third statement is

A. true*. false#. uncertain

'8.

'9.n a family there are husband wife two sons and two daughters. All the ladies were in&itedto a dinner. *oth sons went out to %lay. usband did not return from office. Who was at home?

a. Fnly wife was at home

b. All ladies were at home

c. Fnly sons were at home

d. !obody was at home

':. A can do a wor" in 1 days and * in 2; days. f they wor" on it together for + days then thefraction of the wor" that is left is >

A)1


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NAME: ___________________________PHONE NO._____________________Date: July 5, 20!. ale athletes can %lay.. $ome athletes can %lay.

A. Fnly conclusion follows

*. Fnly conclusion follows#. Cither or follows3. !either nor followsC. *oth and follow

+1. wo trains running in o%%osite directions cross a man standing on the %latform in 28seconds and 18 seconds res%ecti&ely and they cross each other in 2' seconds. he ratio oftheir s%eeds is>

A. 1 > ' *. ' > 2 #. ' > + 3. !one of these

+2. #u% is to coffee as bowl is to

A) dish *) sou% #) s%oon 3) food

+'. Carly IIIIIIIIIof hearing loss isIIIIIIIIby the fact that the senses are able tocom%ensate for moderate amounts of loss so that %eo%le fre-uently do not "now that theirhearing is im%erfecta. disco&ery ... indicatedb. de&elo%ment.. %re&entedc. detection ... com%licatedd. treatment ...facilitated

++. ow long will machine O wor"ing alone ta"e to %roduce x candles achine %roduces x candles in minutes

achine and achine O wor"ing at the same time %roduce x candles in 2 min.

a. alone is sufficient while alone is not sufficient to answerb. alone is sufficient while alone is not sufficient to answerc. Cither alone or alone is sufficient to answerd. *oth and are not sufficient to answere. *oth and are necessary to answer

+. he chief constituent of Gobar Gas isa. Cthaneb. ethanec. ydrogen

d. #arbon6di6oxide

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