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Engineering Mechanics

Engineering Mechanics
The velocity ratio for the third system of pulleys is

2n - 1
n
n²
2n

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Engineering Mechanics
If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be

Zero
Minimum
Infinity
Maximum

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Engineering Mechanics
In order to completely specify angular displacement by a vector, it must fix

Magnitude of angular displacement
Direction of the axis of rotation
Sense of angular displacement
All of these

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Engineering Mechanics
Whenever a force acts on a body and the body undergoes a displacement, then

Work is said to be done
Body has kinetic energy of translation
Power is being transmitted
None of these

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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.

Equal to
None of these
Less than
Greater than

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is

bh3/4
bh3/12
bh3/8
bh3/36

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