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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is

None of these
—rad/sec 20
—rad/sec 10
—rad/sec 30

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Applied Mechanics and Graphic Statics
A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is

3.14 m/sec
1.57 m/sec
1.00 m/sec
6.28 m/sec

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Applied Mechanics and Graphic Statics
The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then,

P = Q
Q = R
P = R
None of these

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Applied Mechanics and Graphic Statics
The locus of the instantaneous centre of a moving rigid body, is

Spiral
Centroid
Involute
Straight line

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Applied Mechanics and Graphic Statics
The pole distance is measured in

force scale
distance scale
time scale
mass scale

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Applied Mechanics and Graphic Statics
The condilion for a lifting machine to be reversible is that its efficiency should be

more than 50%
more than 66.67%
less than 50%
equal to 100%

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