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Engineering Mechanics

Engineering Mechanics
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

2D/(D - d)
2D/(D + d)
D/(D - d)
D/(D + d)

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Engineering Mechanics
The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

0.8 r
0.7 r
0.5 r
0.6 r

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Engineering Mechanics
Moment of inertia of a circular section about its diameter (d) is

πd3/16
πd4/64
πd3/32
πd4/32

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Engineering Mechanics
A pendulum which executes one beat per second is known as

Simple pendulum
Compound pendulum
Second's pendulum
Torsional pendulum

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Engineering Mechanics
The ratio of limiting friction and normal reaction is known as

Coefficient of friction
Angle of repose
Sliding friction
Angle of friction

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Engineering Mechanics
The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

P = m/W + C
P = mW + C
P = C - mW
P = mW - C

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