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Engineering Mechanics

Engineering Mechanics
A smooth cylinder lying on its convex surface remains in __________ equilibrium.

Unstable
Stable
Neutral
None of these

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Engineering Mechanics
The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

0.5 r
0.8 r
0.7 r
0.6 r

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Engineering Mechanics
If ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,

P/m.a = 0
P × m.a = 0
P + m.a = 0
P - m.a = 0

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Engineering Mechanics
The power developed by a body acted upon by a torque 'T' Newton meter (N - m) and revolving at ω radian/s is given by

T.ω/4500 (in kilowatts)
T.ω/75 (in kilowatts)
T.ω/60 (in watts)
T.ω (in watts)

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Engineering Mechanics
The maximum mechanical advantage of a lifting machine is

1 / m
1 - m
m
1 + m

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Engineering Mechanics
The coefficient of friction depends upon

All of these
Shape of the surfaces
Nature of surfaces
Area of contact

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MORE MCQ ON Engineering Mechanics

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