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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is

7mr²/5
2mr²/3
2mr²/5
7mr²/3

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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 depth (d), is

db³/36
db³/12
bd³/12
bd³/36

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Engineering Mechanics
When two elastic bodies collide with each other,

The two bodies will momentarily come to rest after collision
The two bodies begin to regain their original shape
All of these
The two bodies tend to compress and deform at the surface of contact

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Engineering Mechanics
In order to double the period of simple pendulum, the length of the string should be

Quadrupled
Halved
Doubled
None of these

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Engineering Mechanics
An ideal machine is one whose efficiency is

Between 80 and 90%
Between 60 and 70 %
Between 70 and 80%
1

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

ω/r
ω²r
ω
ωr

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MORE MCQ ON Engineering Mechanics

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