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Engineering Mechanics

Engineering Mechanics
The rate of doing work is known as

None of these
Power
Potential energy
Kinetic energy

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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

Ideal
None of these
Reversible
Non-reversible

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Engineering Mechanics
If a number of coplanar forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.

Less than
None of these
Equal to
Greater than

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Engineering Mechanics
A force while acting on a body may

Change its motion
Balance the forces, already acting on it
Give rise to the internal stresses in it
All of these

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Engineering Mechanics
In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.

Less than
None of these
More than
Equal to

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Engineering Mechanics
The motion of a wheel of a car is

Combined translation and rotational
Purely translation
None of the listed here
Purely rotational

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