Mechanical Engineering - Engineering Mechanics

26. 

The mechanical advantage of a lifting machine is the ratio of

A. distance moved by effort to the distance moved by load
B. load lifted to the effort applied
C. output to the input
D. all of the above

Answer: Option B

Explanation:

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27. 

Static friction is always __________ dynamic friction.

A. equal to
B. less than
C. greater than

Answer: Option C

Explanation:

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28. 

A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.

A. equal to
B. less than
C. greater than

Answer: Option C

Explanation:

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29. 

When a particle moves along a circular path with uniform velocity, there will be no tangential acceleration.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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30. 

The bodies which rebound after impact are called

A. inelastic bodies
B. elastic bodies
C. neither elastic nor inelastic bodies
D. none of these

Answer: Option B

Explanation:

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