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Engineering Mechanics

Engineering Mechanics
The maximum efficiency of a lifting machine is

m/V.R.
1/m
V.R./m
1/(m × V.R.)

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Engineering Mechanics
When two elastic bodies collide with each other,

The two bodies tend to compress and deform at the surface of contact
The two bodies begin to regain their original shape
The two bodies will momentarily come to rest after collision
All of these

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is

bh3/12
bh3/8
bh3/36
bh3/4

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Engineering Mechanics
The time of flight of a projectile on downward inclined plane depends upon

Angle of projection
None of these
Angle of inclination of the plane
Both (A) and (B)

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Engineering Mechanics
The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)

2n - 1
n²
n
2n

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Engineering Mechanics
A particle moves along a straight line such that distance (x) traversed in 't' seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

6f - 8
6t² - 8t
3t² + 2t
6f - 4

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