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Engineering Mechanics

Engineering Mechanics
The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

0.7 r
0.6 r
0.5 r
0.8 r

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Engineering Mechanics
Centre of gravity of a solid cone lies on the axis at the height

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

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Engineering Mechanics
The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2, is

500 N
None of these
100 N
20 N

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Engineering Mechanics
For a self locking machine, the efficiency must be

Less than 50%
Equal to 50%
1
Greater than 50%

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Engineering Mechanics
The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as

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

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Engineering Mechanics
The coefficient of restitution for inelastic bodies is

More than one
Between zero and one
Zero
One

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MORE MCQ ON Engineering Mechanics

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