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Engineering Mechanics

Engineering Mechanics
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

g/4
g/3
None of these
g/2

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Engineering Mechanics
Moment of inertia is the

Second moment of mass
Second moment of area
Second moment of force
All of these

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

Compound pendulum
Second's pendulum
Simple pendulum
Torsional pendulum

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Engineering Mechanics
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

2mr²/5
3mr²/5
2mr²/3
mr²/3

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

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

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Engineering Mechanics
The unit of work in S.I. units is

erg
joule
Newton
kg-m

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