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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 point, through which the whole weight of the body acts, irrespective of its position, is known as

Center of gravity
Center of mass
Center of percussion
Moment of inertia

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Engineering Mechanics
The total energy possessed by a system of moving bodies

Is constant at every instant
Is minimum in the start and maximum at the end
Varies from point to point
Is maximum in the start and minimum at the end

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Engineering Mechanics
A screw jack used for lifting the loads is

None of these
A non-reversible machine
A reversible machine
An ideal machine

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Engineering Mechanics
Static friction is always __________ dynamic friction.

Less than
None of these
Equal to
Greater than

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Engineering Mechanics
The efficiency of a lifting machine is the ratio of

Output to the input
Mechanical advantage to the velocity ratio
Work done by the machine to the work done on the machine
All of these

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MORE MCQ ON Engineering Mechanics

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