SECTION I : TECHNICAL 50 QUESTIONS 30 MINS
1) Magnetic compass indicates
a) true north pole b)alionic earth pole c)geographic north pole d)magnetic north
2) For a cantilever beam with uniformly varying load, shape of bending moment
a)parabolic b) hyperbolic c) straightline d) cubic.
3) For perfectly elastic bodies, coefficent of restitution is a) 0 b) 0.5 c) 1
4) For 1st order lever, mechanical advantage is a)<1 b)>1 c) =1 d)none.
5) 18:4:1 in H.S.S represent a) 18tu : 4vn : 1 cr. Other choices r just
6) Due to intense braking of an automobile reaction of wheels on road
Will be equally distributed to all 4 wheels.
Will be more at rear wheels
Inertia will be on the front wheels.
if u apply brakes on the weels of a bicycle then
a. normal reaction on the wheel increases
b. normal reaction on the wheel decreases
c. normal reaction remains same as there is no radial component of frictional
7) thermal efiiciency of I.C engines will be a)20-25% b)30-35% c)60-75% d) 45-
8) when a mass is supportedby spring of spring constant k, which is cut in 4
equal pieces and the connected in parallel way the equilent spring constant is
a)k/4 b) 16k c) 64k d) k.
9) when a mass is supported on roof of a elevator and elevator moves with an
acceleration of 4.9 m/s2 shows a spring reading of 15kg, then the weight of the
body is a) 10 b) 15 c) 30 d)20.
10.Mass production of bolts and rivets is by a .hot extrusion b .forging c .cold
heading d .cold peening
11.why doesn’t mercury stick to glass tube
a .cohesive force>adhesive force b .cohesive force<adhesive force
c .cohesive force= adhesive force d .none of the above
12.How r bolts and nuts manufactured? a.head stamping b .cold extrusion c .cold
peening d .forging
13.Eulers formula is used for column of length a. >80 b. <80 c. >90 d. >110
14.If a body weighing 40kg floats in water with 40% of volume immersed, the
sp.gravity of the body is
1 b. 0.16 c. 0.25 d.
15.Axial claw clutches a.Disengages b. engages c. engages only with load d.
operates only with load
16.If center distance of a involute mating gear changes then the pressure angle
Increases b. decreases c. remains unaltered
a.heated above critical temp and cooled in air .
b. heated above critical temp and quenched in oil
c. heated below critical temp and cooled in air
18.The best suited material for permanent magnet a. Alnico b. silicon
19.Hookes joint is used for
a. parallel and intersecting shafts b. non parallel non intersecting
c. nonparallel and intersecting d. parallel and non intersecting
20.To have a const.velocity ratio the two gears should have (or) angular
velocity of the gear will remain the same if the .......... cuts the line
joining ........ at a fixed point ans law of gearing (check for ans)
21.Which of the following is a loose running fit a. h6f6 b.h6e6 c. h6d6
22.Farenheit and centigrade are equal at a.-40 b.0 c. 32 d.100
23. M10 hexagonal bolt is manufactured a. upset forging and thread rolling b.
casting and thread rolling
24.specific speed in a turbo machine depends on a.geometric shape, b.size,
c.head, d.all the above.
25.unit of surface roughness is a.micron, b.PPM, c.mm2 ,d.meter
26.mohr’s circle is used to find a.principle stress, b.resultant of…. ANS:c
(check for ans)
27.storage,transportation, operation,delay,inspection symbols are used in
a.process chart, b.mam m/c chart, c.grant chart, d.all the above.
28.melting point of ice changes with
a.increase with pressure, b.increase with pressure ratio.
29.If the speed of fan is doubled,quantity of air displaced is
a.doubled, b.4times, c.1/2 times d.remains same.
30. which has less carbon content
a.tool steel,b.spring steel,carburising steel,forging steel.
31.when a helical compressive spring is subjected to axial compression load,the
stress induced in the spring will be
a. tensile, b. compressive, c. shear. d. none
32.for a bar element if area, length, and stress are doubled the elastic strain
energy will be
Half b. doubled c. 4 times d. 8 times
33 for a punching die , 2mm thick sheet, dia. D ,force f, the shear force is
ans: 8800 (check for ans)
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