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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a thin rod of mass 'm' and length 'l', about an axis through its centre of gravity and perpendicular to its length is

ml2/ 6
ml2/12
ml2/8
ml2/4

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Engineering Mechanics
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be

Zero at its upper end
Downwards at its upper end
Upwards at its upper end
Perpendicular to the wall at its upper end

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Engineering Mechanics
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

Unlike parallel forces
Like parallel forces
Coplanar non-concurrent forces
Coplanar concurrent forces

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Engineering Mechanics
A body of mass ‘m’ moving with a constant velocity ‘v’ strikes another body of same mass moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is

8v
v
2v
4v

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

Minimum
None of these
Zero
Maximum

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Engineering Mechanics
An ideal machine is one whose efficiency is

1
Between 70 and 80%
Between 60 and 70 %
Between 80 and 90%

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MORE MCQ ON Engineering Mechanics

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