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Engineering Mechanics

Engineering Mechanics
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

g/3
None of these
g/4
g/2

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Engineering Mechanics
The ideal angle of banking provided on the curves on roads depends upon

Weight of the vehicle
(Velocity)2 of the vehicle
Nature of the road surface
Coefficient of friction between the road and vehicle contact point

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Engineering Mechanics
Center of gravity of a thin hollow cone lies on the axis at a height of

One-half of the total height above base
One-fourth of the total height above base
Three-eighth of the total height above the base
One-third of the total height above base

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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

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

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Engineering Mechanics
The unit of angular acceleration is

m/s
rad/s2
N-m
m/s2

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Engineering Mechanics
In ideal machines, mechanical advantage is __________ velocity ratio.

Equal to
Greater than
Less than
None of these

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