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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

3mr²/10
2mr²/5
4mr²/5
3mr²/5

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Engineering Mechanics
The law of motion involved in the recoil of gun is

Newton's second law of motion
None of these
Newton's third law of motion
Newton's first law of motion

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Engineering Mechanics
If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

More inclined when standing
Less inclined when standing
Less inclined when moving
More inclined when moving

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Engineering Mechanics
A machine having an efficiency greater than 50%, is known as

Neither reversible nor non-reversible machine
Reversible machine
Ideal machine
Non-reversible machine

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Engineering Mechanics
The moment of inertia of a solid cylinder of mass 'm', radius 'r' and length 'l' about the longitudinal axis or polar axis is

mr²/8
mr²/4
mr²/6
mr²/2

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Engineering Mechanics
If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

30°
120°
60°
90°

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MORE MCQ ON Engineering Mechanics

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