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Engineering Mechanics

Engineering Mechanics
The unit of angular acceleration is

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

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Engineering Mechanics
When the spring of a watch is wound, it will possess

Strain energy
Kinetic energy
Electrical energy
Heat energy

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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

2v
4v
8v
v

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Engineering Mechanics
The efficiency of a lifting machine is the ratio of

Output to the input
Work done by the machine to the work done on the machine
Mechanical advantage to the velocity ratio
All of these

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Engineering Mechanics
The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity.

Directly
Inversely
Square root
None of these

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Engineering Mechanics
The range of projectile (R) on an upward inclined plane is

2u². sin (α - β). cos α/g. cos² β
2u². sin (α + β). cos α/g. cos² β
g. cos² β/2u². sin (α - β). cos α
g. cos² β/2u². sin (α + β). cos α

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