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Engineering Mechanics

Engineering Mechanics
The amplitude is always __________ radius of the circle.

Greater than
None of these
Equal to
Less than

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Engineering Mechanics
The moment of inertia of a thin disc of mass ‘m’ and radius ‘r’, about an axis through its center of gravity and perpendicular to the plane of the disc is

mr²/6
mr²/2
mr²/4
mr²/8

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Engineering Mechanics
The motion of a wheel of a car is

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

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

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

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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

bd³/36
bd³/12
db³/12
db³/36

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Engineering Mechanics
The moment of inertia of a square of side (a) about an axis through its center of gravity is

a4/4
a4/8
a4/36
a4/12

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