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Engineering Mechanics

Engineering Mechanics
The rate of doing work is known as

Power
None of these
Potential energy
Kinetic energy

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Engineering Mechanics
The velocity ratio of a single purchase crab winch can be increased by

Increasing the length of the handle
Increasing the number of teeth of the pinion
All of these
Increasing the radius of the load drum

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Engineering Mechanics
One joule is equal to

0.1 N-m
100 N-m
1 N-m
10 N-m

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Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Center of percussion
Moment of inertia
Center of gravity
Center of mass

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Engineering Mechanics
The wheels of a moving car possess

Kinetic energy of translation only
Kinetic energy of rotation only
Potential energy only
Kinetic energy of translation and rotation both

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

g. cos² β/2u². sin (α + β). cos α
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

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