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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is

2mr²/5
7mr²/3
7mr²/5
2mr²/3

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Engineering Mechanics
A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is

None of these
Non-reversible
Reversible
Ideal

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Engineering Mechanics
The maximum mechanical advantage of a lifting machine is

1 + m
m
1 - m
1 / m

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Engineering Mechanics
The coefficient of restitution for inelastic bodies is

Zero
One
Between zero and one
More than one

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Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Equal to
Greater than
Less than
None of these

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Engineering Mechanics
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

4r/ 3π
8r/3
3r/4π
3r/ 8

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MORE MCQ ON Engineering Mechanics

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