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Engineering Mechanics

Engineering Mechanics
The maximum efficiency of a lifting machine is

1/m
V.R./m
1/(m × V.R.)
m/V.R.

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Engineering Mechanics
The unit of angular velocity is

Revolutions/min
m/min
Both (B) and (C)
rad/s

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Engineering Mechanics
The velocity ratio in case of an inclined plane inclined at angle 'θ' to the horizontal and weight being pulled up the inclined plane by vertical effort is

sinθ
cosecθ
tanθ
cosθ

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

Maximum
Zero
Minimum
None of these

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Engineering Mechanics
The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

87.5 mm
75 mm
50 mm
125 mm

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Engineering Mechanics
Mass moment of inertia of a uniform thin rod of mass M and length (l) about its mid-point and perpendicular to its length is

(3/4) Ml²
(1/12) Ml²
(2/3) Ml²
(1/3) Ml²

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