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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

mr²/3
2mr²/5
3mr²/5
2mr²/3

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Engineering Mechanics
Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.

Meet
Either ‘A’ or ‘B’
Do not meet
None 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

bd³/12
db³/36
bd³/36
db³/12

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Engineering Mechanics
The centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.(where h = Height of a right circular solid cone.)

h/6
h/3
h/4
h/2

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Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

π/ω
2π × ω
ω/2π
2π/ω

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Engineering Mechanics
For a self locking machine, the efficiency must be

Equal to 50%
1
Less than 50%
Greater than 50%

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MORE MCQ ON Engineering Mechanics

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