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Engineering Mechanics

Engineering Mechanics
Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

Four times
Thrice
Same as
Twice

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Engineering Mechanics
The velocity ratio of a single purchase crab winch can be increased by

Increasing the radius of the load drum
Increasing the length of the handle
All of these
Increasing the number of teeth of the pinion

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Engineering Mechanics
The velocity of a particle moving with simple harmonic motion is _________ at the mean position.

None of these
Zero
Minimum
Maximum

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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
A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is (where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)

MS/5
MS/4
None of these
MS/3

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Engineering Mechanics
The angle between two forces when the resultant is maximum and minimum respectively are

180° and 0°
90° and 0°
90° and 180°
0° and 180°

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