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Engineering Mechanics

Engineering Mechanics
The center of percussion of a solid cylinder of radius ‘r’ resting on a horizontal plane will be

2r/3
r/2
r/A
3r/2

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Engineering Mechanics
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

D/(D + d)
2D/(D - d)
2D/(D + d)
D/(D - d)

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

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

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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

Reversible
None of these
Non-reversible
Ideal

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Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

Less than
None of these
Greater than
Equal to

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Engineering Mechanics
The ideal angle of banking provided on the curves on roads depends upon

Weight of the vehicle
Coefficient of friction between the road and vehicle contact point
Nature of the road surface
(Velocity)2 of the vehicle

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