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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a square of side a about its diagonal is

a²/8
a⁴/16
a³/12
a⁴/12

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Engineering Mechanics
Work done is said to be zero, when

Either (A) or (B)
None of these
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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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
The coefficient of restitution for inelastic bodies is

More than one
Between zero and one
One
Zero

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Engineering Mechanics
The total motion possessed by a body, is called

Mass
Weight
Momentum
Impulsive force

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Engineering Mechanics
The centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.(where h = Height of a right circular solid cone.)

h/3
h/4
h/6
h/2

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