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Engineering Mechanics

Engineering Mechanics
The maximum mechanical advantage of a lifting machine is

m
1 / m
1 - m
1 + m

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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
bd³/36
db³/36
db³/12

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Engineering Mechanics
When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

Towards front
Outward
Towards back
Inward

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

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

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Engineering Mechanics
The maximum acceleration of a particle moving with simple harmonic motion is

ω²r
ωr
ω/r
ω

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Engineering Mechanics
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad/s2, is

a = r / α
a = α.r
a = α/ r
None of these

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