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Engineering Mechanics

Engineering Mechanics
The centre of percussion is below the centre of gravity of the body and is at a distance equal to

kG2/h
h × kG
h/kG
h2/kG

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Engineering Mechanics
The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is

(kG² + h²)/h
(kG² + h²)/h²
h²/(kG² + h²)
h/(kG² + h²)

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Engineering Mechanics
A machine having an efficiency less than 50%, is known as

Reversible machine
Neither reversible nor non-reversible machine
Ideal machine
Non-reversible machine

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Engineering Mechanics
When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.

Directly proportional
None of these
Cube root
Inversely proportional

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Engineering Mechanics
The energy possessed by a body, for doing work by virtue of its position, is called

Kinetic energy
Potential energy
Chemical energy
Electrical energy

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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.

Greater than
None of these
Less than
Equal to

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