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Engineering Mechanics

Engineering Mechanics
The rate of doing work is known as

Power
Kinetic energy
Potential energy
None of these

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Engineering Mechanics
Coefficient of friction depends upon

None of these
Both (A) and (B)
Nature of surface only
Area of contact only

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Engineering Mechanics
The velocity ratio in case of an inclined plane inclined at angle 'θ' to the horizontal and weight being pulled up the inclined plane by vertical effort is

cosecθ
tanθ
sinθ
cosθ

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Engineering Mechanics
The centre of gravity of a uniform lamina lies at

The centre of heavy portion
The midpoint of its axis
The bottom surface
All of these

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

h/kG
h2/kG
h × kG
kG2/h

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MORE MCQ ON Engineering Mechanics

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