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Engineering Mechanics

Engineering Mechanics
The rate of doing work is known as

Power
None of these
Kinetic energy
Potential energy

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Engineering Mechanics
The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about X-X axis is

16 cm4
20 cm4
9 cm4
12 cm4

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

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Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

None of these
Less than
Equal to
Greater than

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Engineering Mechanics
The moment of inertia of a square of side a about its diagonal is

a⁴/12
a³/12
a²/8
a⁴/16

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Engineering Mechanics
A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of

1 m
4 m
3 m
2 m

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