Explore topic-wise MCQs in Machine Design.

This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Design knowledge and support exam preparation. Choose a topic below to get started.

1.

If velocity ratio is less than 3, then centre distance is given by D+.5d.

A. True
B. False
Answer» C.
Discussion
2.

A shorter centre distance is always preferred in belt drives.

A. Yes due to stability
B. No due to stability
C. Yes due to instability
D. No due to instability
Answer» B. No due to stability
Discussion
3.

It is possible to use the belting reverse direction without violating the law of belting.

A. True
B. False
Answer» C.
Discussion
4.

The law of belting states that the centreline of the belt when it approaches a pulley must not lie in the midplane of the pulley.

A. True
B. False
Answer» B. False
Discussion
5.

Vertical drives are preferred over horizontal.

A. True
B. False
Answer» C.
Discussion
6.

The optimum velocity of the belt for maximum transmission is given by √P/6m.

A. Yes
B. No, by replacing 6 by 3
C. Replacing 6 by 9
D. None of the listed
Answer» C. Replacing 6 by 9
Discussion
7.

Fabric rubber belts are not widely used as they can’t be operated at high speeds.

A. They can’t be used at velocities 50m/s
B. They can be used at high velocities
C. Limiting velocity is 20m/s
D. None of the listed
Answer» C. Limiting velocity is 20m/s
Discussion
8.

IT_IS_POSSIBLE_TO_USE_THE_BELTING_REVERSE_DIRECTION_WITHOUT_VIOLATING_THE_LAW_OF_BELTING.?$

A. True
B. False
Answer» C.
Discussion
9.

THE_LAW_OF_BELTING_STATES_THAT_THE_CENTRELINE_OF_THE_BELT_WHEN_IT_APPROACHES_A_PULLEY_MUST_NOT_LIE_IN_THE_MIDPLANE_OF_THE_PULLEY.?$

A. True
B. False
Answer» B. False
Discussion
10.

If velocity ratio is less than 3, then centre distance is given by D+.5d.$

A. True
B. False
Answer» C.
Discussion
11.

A shorter centre distance is always preferred in belt drives.$

A. Yes due to stability
B. No due to stability
C. Yes due to instability
D. No due to instability
Answer» B. No due to stability
Discussion
12.

The diameter of the shorter pulley in leather belt drive is 265mm. It is rotating at 1440 rpm. Calculate the velocity of the belt.

A. 25m/s
B. 20m/s
C. 30m/s
D. None of the mentioned
Answer» C. 30m/s
Discussion
13.

Is it possible to reduce the centre distance as much as we want?

A. Yes power transmission increases
B. No
C. Can’t be cited
D. None of the listed
Answer» C. Can‚Äö√Ñ√∂‚àö√ë‚àö¬•t be cited
Discussion
14.

If velocity ratio is more than 3, then centre distance is given by 2D.

A. By 3D
B. By D
C. By 4D
D. By 5D
Answer» C. By 4D
Discussion
15.

Vertical drives are preferred over horizontal?

A. True
B. False
Answer» C.
Discussion
16.

In horizontal belt, the loose side is generally kept on the bottom.

A. True
B. False
Answer» C.
Discussion
17.

Creep is the slight absolute motion of the belt as it passes over the pulley.

A. Yes
B. No, it is a relative motion
C. None of the listed
D. It is absolute motion
Answer» C. None of the listed
Discussion
18.

The optimum velocity of the belt for maximum transmission is given by ‚àöP/6m.$

A. Yes
B. No, by replacing 6 by 3
C. Replacing 6 by 9
D. None of the listed
Answer» C. Replacing 6 by 9
Discussion
19.

Power transmitting capacity of V belts is more than that of flat belt.

A. Yes
B. No
C. Only for V angle > 15
D. None of the listed
Answer» B. No
Discussion
20.

Fabric rubber belts are not widely used as they can’t be operated at high speeds.$

A. They can’t be used at velocities 50m/s
B. They can be used at high velocities
C. Limiting velocity is 20m/s
D. None of the listed
Answer» C. Limiting velocity is 20m/s
Discussion
21.

Velocity ratio for chain drive is lesser than that for belts.

A. Yes
B. No
C. In some cases
D. Can’t be determined
Answer» C. In some cases
Discussion
22.

The layer of a belt is generally called as

A. Ply
B. Layer
C. Segment
D. Sediment
Answer» B. Layer
Discussion