mechanical engineering MCQs – Page 118

Practise multiple-choice questions from mechanical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

mechanical engineering Mcqs

1. compressors gas turbines and jet engines 2. theory of machines 3. nuclear power plants 4. engineering materials 5. strength of materials mechanical engineering 6. thermodynamics 7. heat transfer 8. i c engines 9. steam boilers engines nozzles and turbines 10. engineering mechanics 11. fluid mechanics mechanical engineering 12. production technology 13. machine design 14. hydraulic machines 15. workshop technology 16. refrigeration and air conditioning

2341. Angular acceleration of a link can be determined by dividing the___________________?
0

A. centripetal component of acceleration with length of link

B. all of the above

C. tangential component of acceleration with length of link

D. resultant acceleration with length of link

E. none of the above

2342. A completely constrained motion can be transmitted with __________________?
0

A. 1 link with pin joints

B. all of the above

C. 2 links with pin joints

D. 4 links with pin joints

E. 3 links with pin joints

2343. The Hookes joint consists of ____________________?
0

A. five forks

B. one fork

C. four forks

D. three forks

E. two forks

2344. Relationship between the number of links (L) and number of pairs (P) is___________________?
0

A. P = L-4

B. P = 2L-4

C. P = 2L+2

D. P = 2L-2

E. P = 2L + 4

2345. A panto graph is a mechanism with___________________?
0

A. rolling pairs

B. turning pairs

C. spherical pairs

D. higher pairs

E. lower pairs

2346. The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be________________?
0

A. 0, and more than co2r

B. cor, 0

C. none of the above

D. 0, 0

E. 0, and less than coV

2347. Pulley in a belt drive acts as_______________?
0

A. rolling pair

B. sliding pair

C. surface pair

D. cylindrical pair

E. turning pair

2348. The Ackermann steering mechanism is preferred to the Davis type in automobiles because____________________?
0

A. the former is most rigid

B. the former is most economical

C. the former is having turning pair

D. the former is mathematically accurate

E. none of thfr above

2349. Which of the following is a lower pair_______________?
0

A. cam and follower

B. A. and B. above

C. ball and socket i

D. belt drive

E. piston and cylinder

2350. A universal joint is an example of_____________________?
0

A. higher pair

B. sliding pair

C. lower pair

D. rolling pair

E. turning pair

2351. The locus of a point on a thread unwound from a cylinder will be___________________?
0

A. involute

B. cycloidal

C. helix

D. a straight line

E. a circle

2352. Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts___________________?
0

A. kinematics

B. applied mechanics

C. theory of machines

D. kinetics

E. mechanisms

2353. In an ideal machine, the output as compared to input is_______________?
0

A. more

B. less

C. always less

D. equal

E. may be less or more depending on efficiency

2354. Coriolis component acts________________?
0

A. perpendicular to sliding surfaces

B. along sliding surfaces

C. unpredictable

D. none of the above

E. somewhere in between above two

2355. Any point on a link connecting double slider crank chain will trace a ________________?
0

A. ellipse

B. parabola

C. hyperbola

D. straight line

E. circle

2356. In multi-V-belt transmission, if one of the belt is broken, we have to change the_________________?
0

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

2357. If two moving elements have surface contact in motion, such pair is known as_________________?
0

A. higher pair

B. lower pair

C. rolling pair

D. surface pair

E. sliding pair

2358. A circular bar moving in a round hole is an example of_______________?
0

A. partially constrained motion

B. incompletely constrained motion

C. completely constrained motion

D. none of the above

E. successfully constrained motion

2359. With single Hookes joint it is possible to connect two shafts, the axes of which have an angular misalignment up to ________________?
0

A. 40

B. 60.

C. 30

D. 10

E. 20

2360. In a rigid link OA, velocity of A w.r.t. will be___________________?
0

A. at 45 to OA

B. along OA

C. along AO

D. perpendicular to OA

E. parallel to OA

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