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Engineering Mechanics

Engineering Mechanics
A pendulum which executes one beat per second is known as

Torsional pendulum
Compound pendulum
Second's pendulum
Simple pendulum

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

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Engineering Mechanics
A framed structure is perfect, if the number of members are __________ (2j - 3), where j is the number of joints.

None of these
Less than
Greater than
Equal to

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Engineering Mechanics
When two elastic bodies collide with each other,

The two bodies will momentarily come to rest after collision
The two bodies tend to compress and deform at the surface of contact
The two bodies begin to regain their original shape
All of these

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Engineering Mechanics
An ideal machine is one whose efficiency is

Between 60 and 70 %
1
Between 70 and 80%
Between 80 and 90%

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Engineering Mechanics
Work done is said to be zero, when

None of these
Either (A) or (B)
No force acts on a body but some displacement takes place
Some force acts on a body, but displacement is zero

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