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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

Reversible
Non-reversible
None of these
Ideal

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Engineering Mechanics
The wheels of a moving car possess

Kinetic energy of translation only
Kinetic energy of translation and rotation both
Potential energy only
Kinetic energy of rotation only

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Engineering Mechanics
The forces, whose lines of action are parallel to each other and act in the same directions, are known as

Coplanar concurrent forces
Unlike parallel forces
Like parallel forces
Coplanar non-concurrent forces

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Engineering Mechanics
Coefficient of friction depends upon

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

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Engineering Mechanics
Two forces are acting at an angle of 120°. The bigger force is 40 N and the resultant is perpendicular to the smaller one. The smaller force is

None of the listed here
20 N
40 N
120 N

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Engineering Mechanics
The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

Equal to
Greater than
Less than
None of these

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