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Engineering Mechanics

Engineering Mechanics
In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.

Equal to
None of these
More than
Less than

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Engineering Mechanics
Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

Twice
Same as
Thrice
Four times

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Engineering Mechanics
Static friction is always __________ dynamic friction.

Less than
Greater than
Equal to
None of these

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Engineering Mechanics
The rate of doing work is known as

Potential energy
None of these
Power
Kinetic energy

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Engineering Mechanics
The unit of angular acceleration is

rad/s2
N-m
m/s2
m/s

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

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

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