2351. A universal joint is an example of_____________________?
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A. higher pair

B. sliding pair

C. lower pair

D. rolling pair

E. turning pair

2352. The locus of a point on a thread unwound from a cylinder will be___________________?
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A. involute

B. cycloidal

C. helix

D. a straight line

E. a circle

2353. Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts___________________?
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A. kinematics

B. applied mechanics

C. theory of machines

D. kinetics

E. mechanisms

2354. In an ideal machine, the output as compared to input is_______________?
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A. more

B. less

C. always less

D. equal

E. may be less or more depending on efficiency

2355. Coriolis component acts________________?
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A. perpendicular to sliding surfaces

B. along sliding surfaces

C. unpredictable

D. none of the above

E. somewhere in between above two

2356. Any point on a link connecting double slider crank chain will trace a ________________?
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A. ellipse

B. parabola

C. hyperbola

D. straight line

E. circle

2357. In multi-V-belt transmission, if one of the belt is broken, we have to change the_________________?
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A. broken belt

B. all the weak belts

C. there is no need of changing any one as remaining belts can take care of transmission of load

D. broken belt and its adjacent belts

E. all the belts
2358. If two moving elements have surface contact in motion, such pair is known as_________________?
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A. higher pair

B. lower pair

C. rolling pair

D. surface pair

E. sliding pair

2359. A circular bar moving in a round hole is an example of_______________?
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A. partially constrained motion

B. incompletely constrained motion

C. completely constrained motion

D. none of the above

E. successfully constrained motion

2360. With single Hookes joint it is possible to connect two shafts, the axes of which have an angular misalignment up to ________________?
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A. 40

B. 60.

C. 30

D. 10

E. 20

2361. In a rigid link OA, velocity of A w.r.t. will be___________________?
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A. at 45 to OA

B. along OA

C. along AO

D. perpendicular to OA

E. parallel to OA

2362. Coriolis component is encountered in_________________?
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A. slider crank mechanism

B. all of the above.

C. four bar chain mechanism

D. quick return mechanism of shaper

E. A. and C. above

2363. The Kleins method of construction for reciprocating engine mechanism _______________?
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A. is based on acceleration diagram

B. utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine

C. enables determination of Coriolis component

D. is a simplified form of instantaneous center method

E. none of the above

2364. The example of higher pair is_________________?
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A. belt, rope and chain drives

B. all of the above

C. none of the above

D. gears, cams

E. ball and roller bearings

2365. If D1 and D2 be the diameters of driver and driven pulleys, then belt speed is proportional to__________________?
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A. D1+D2

B. D1

C. D1-D2.

D. D1/D2

E. D2/D1

2366. Which of the following has sliding motion________________?
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A. cross head guide

B. crank

C. connecting rod

D. cross-head

E. crank pin

2367. Pitch point on a cam is_________________?
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A. none of the above

B. the point on cam pitch curve having the minimum pressure angle

C. the point on cam pitch curve having the maximum pressure angle

D. any point on pitch curve

E. any point on pitch circle

2368. Kleins construction can be used when_________________?
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A. crank has uniform angular acceleration

B. crank has a uniform angular velocity

C. crank has non-uniform velocity

D. crank has uniform angular velocity and angular acceleration

E. there is no such criterion

2369. A slider crank chain consists of following numbers of turning and sliding pairs_________________?
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A. 0, 4

B. I, 3

C. 2, 2

D. 3, 1

E. 4, 0

2370. Kinematic pairs are those which have__________________?
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A. two elements that permit relative mo-tion

B. elements of pairs not held together mechanically

C. none of the above

D. surface contact between the two ele-ments when in motion

E. point or line contact between the two elements when in motion

2371. The tendency of a body to resist change from rest or motion is known as_______________?
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A. friction

B. inertia

C. resisting torque

D. resisting force

E. mass

2372. Angle of dwell of cam is defined as the angle________________?
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A. during which the follower returns to its initial position

B. of rotation of the cam for definite displacement of the follower

C. moved by the cam from the instant the follower begins to rise, till it reaches its highest position

D. through which the cam rotates during the period in which the follower remains in the highest position

E. moved by the cam from a beginning of ascent to the termination of descent

2373. Crowning on pulleys helps__________________?
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A. for automatic adjustment of belt posi-tion so that belt runs centrally

B. in increasing velocity ratio

C. increase belt and pulley life

D. none of the above

E. in decreasing the slip of the belt

2374. Elements of pairs held together mechanically is known as ___________________?
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A. rolling pair

B. none of the above

C. closed pair

D. open pair

E. mechanical pair

2375. To obviate axial thrust, following gear drive is used_____________________?
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A. double helical gears having identical teeth

B. mutter gears

C. double helical gears having opposite teeth

D. none of the above

E. single helical gear in which one of the teeth of helix angle a is more

2376. Shaft revolving in a bearing is the following type of pair________________?
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A. spherical pair,

B. lower pair

C. higher pair

D. bearing pair

E. cylindrical pair

2377. The purpose of a link is to________________?
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A. all of the above

B. transmit motion

C. guide other links

D. act as a support

E. none of the above

2378. Governor is used in automobile to_______________?
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A. all of the above

B. decrease the variation of speed

C. to control

D. to control SN

E. none of the above

2379. Cross head and guides form a _________________?
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A. lower pair

B. higher pair

C. sliding pair

D. rolling pair

E. turning pair

2380. the chain is unconstrained when_____________?
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A. L.H.S. > R.H.S

B. L.H.S. = R.H.S

C. there is no such criterion for checking above requirement

D. L.H.S. < R.H.S

E. none of the above

2381. If some links are connected such that motion between them can take place in more than one direction, it is called_______________?
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A. partially constrained motion

B. incompletely constrained motion

C. completely constrained motion

D. successfully constrained motion

E. none of the above

2382. The frequency of oscillation at compared to earth will be___________________?
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A. 6 times less

B. 2.44 times more

C. 2.44 times,less

D. 6 times more

E. 36 times less

2383. A point on a link connecting double slider crank chain traces a____________________?
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A. parabola

B. circle

C. straight line

D. hyperbola

E. ellipse
2384. Transmission of power from the engine to the rear axle of an automobile is by means of___________________?
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A. worm and wheel method

B. crown gear

C. bevel gears

D. Hookes joint

E. compound gears

2385. A cam mechanism imparts following motion___________________?
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A. all of the above

B. rotating

C. reciprocating

D. none of the above

E. oscillating

2386. Automobile steering gear is an example of____________________?
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A. turning pair

B. rotary pair

C. higher pair

D. lower pair

E. sliding pair

2387. The advantage of the piston valve over D-slide valve is that in the former case____________________?
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A. wear is less

B. power absorbed is less

C. both wear and power absorbed are low

D. the pressure developed being high provides tight sealing

E. there is overall economy of initial cost, maintenance and operation

2388. In above example, the minimum length of the coupler will be__________________?
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A. none of the above

B. slightly less than 45 mm

C. slightly more than 45 mm

D. 95 mm

E. 45 mm

2389. A typewriter mechanism has 7 number of binary joints, six links and none of higher pairs. The mechanism is________________?
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A. not sound

B. kinematically sound

C. soundness would depend upon which link is kept fixed

D. none of the above

E. data is not sufficient to determine same

2390. The following is the inversion of slider crank chain mechanism______________________?
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A. Whitworth quick return mechanism

B. hand pump

C. all of the above

D. oscillating cylinder engine

E. none of the above

2391. The indicator using Watt mechanism is known as________________?
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A. Thompson indicator

B. Richard indicator

C. none of the above

D. Simplex indicator

E. Thomson indicator

2392. Rectangular bar in a rectangular hole is the following type of pair__________________?
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A. incompletely constrained motion

B. freely constrained motion

C. completely constrained motion

D. partially constrained motion

E. none of the above

2393. The approximate straight line mechanism is a____________________?
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A. 8 bar linkage

B. 6 bar linkage

C. 3 bar linkage

D. four bar linkage

E. 5 bar linkage

2394. Angle of descent of cam is defined as the angle__________________?
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A. during which the follower returns to its initial position

B. through which the cam rotates during the period in which the follower remains in the highest position

C. moved by the cam from the instant the follower begins to rise, till it reaches its highest position

D. moved by the cam from beginning of ascent to the termination of descent

E. of rotation of the cam for a definite displacement of the follower

2395. The direction of Coriolis component of acceleration is the direction _____________________?
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A. along tangential acceleration

B. along the centripetal acceleration

C. along perpendicular to angular velocity

D. of relative velocity vector for the two coincident points rotated by 90 in the direction of the angular velocity of the rotation of the link

E. none of the above.

2396. Flexible coupling is used because _____________________?
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A. it increases shaft life

B. it is easy to disassemble

C. it is easy to engage and disengage

D. it transmits shocks gradually

E. it prevents shock transmission and eliminates stress reversals
2397. Which of the following mechanism is obtained from lower pair________________?
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A. valve and valve gears

B. pantograph

C. gyroscope

D. all of the above

E. generated straight line motions

2398. Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts__________________?
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A. kinematics

B. kinetics

C. applied mechanics

D. mechanisms

E. theory of machines
2399. Which of the following mechanisms produces mathematically an exact straight line motion____________________?
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A. Grasshopper mechanism

B. Tchabichiff mechanism

C. Peaucelliers mechanism

D. Watt mechanism

E. Ackermann mechanism

2400. Angle of action of cam is defined as the angle ____________________?
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A. moved by the cam from the instant the follower begins to rise, till it reaches its highest position

B. moved by the cam from beginning of ascent to the termination of descent

C. of rotation of the cam for a definite displacement of the follower

D. through which the cam rotates during the period in which the follower remains in the highest position

E. during which the follower returns to its initial position