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Engineering Mechanics

Engineering Mechanics
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

20
10
5
40

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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.

None of these
Less than
More than
Equal to

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Engineering Mechanics
The rate of change of displacement of a body is called

Velocity
Momentum
None of these
Acceleration

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Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

Less than
Equal to
None of these
Greater than

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Engineering Mechanics
The motion of a particle round a fixed axis is

Translatory as well as rotary
Translatory
Rotary
Circular

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

bd³/12
db³/12
bd³/36
db³/36

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