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Engineering Mechanics

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
Reversible
Non-reversible
Ideal

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

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

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Engineering Mechanics
For a self locking machine, the efficiency must be

1
Greater than 50%
Less than 50%
Equal to 50%

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Engineering Mechanics
The velocity ratio of a first system of pulleys with 4 pulleys is

20
4
8
16

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Engineering Mechanics
The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

Less than
None of these
Greater than
Equal to

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Engineering Mechanics
When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

Towards back
Towards front
Outward
Inward

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MORE MCQ ON Engineering Mechanics

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