Mechanical Engineering - Engineering Mechanics

36.
The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is
mr2/2
mr2/4
mr2/6
mr2/8
Answer: Option
Explanation:
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37.
In a screw jack, the effort required to lift the load is given by(where W = Load lifted, α = Helix angle, and φ = Angle of friction.)
P = W tan (α - φ)
P = W tan (α + φ)
P = W tan (φ - α)
P = W cos (α + φ)
Answer: Option
Explanation:
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38.
The terms 'leverage' and 'mechanical advantage' Of a compound lever have got the same meaning.
Correct
Incorrect
Answer: Option
Explanation:
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39.
A couple produces
translatory motion
rotational motion
combined translatory and rotational motion
none of the above
Answer: Option
Explanation:
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40.
Energy may be defined as the capacity of doing work.
Correct
Incorrect
Answer: Option
Explanation:
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