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Engineering Mechanics

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

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

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Engineering Mechanics
One joule is equal to

0.1 N-m
1 N-m
100 N-m
10 N-m

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Engineering Mechanics
The maximum efficiency of a lifting machine is

V.R./m
m/V.R.
1/(m × V.R.)
1/m

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

Rotary
Translatory
Translatory as well as rotary
Circular

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Engineering Mechanics
If u₁ and u₂ are the velocities of two moving bodies in the same direction before impact and v₁ and v₂ are their velocities after impact, then coefficient of restitution is given by

(u₂ + u₁)/(v₂ + v₁)
(v₂ - v₁)/(u₁ - u₂)
(u₁ - u₂)/(v₁ - v₂)
(v₁ - v₂)/(u₁ - u₂)

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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
db³/12
bd³/12
db³/36

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