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Engineering Mechanics

Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

None of these
Third
Second
First

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Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Equal to the moment of the couple
Both of above are correct
Both of above are wrong
Constant

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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

8v
2v
4v
v

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Engineering Mechanics
The resultant of the two forces ‘P’ and ‘Q’ is ‘R’. If ‘Q’ is doubled, the new resultant is perpendicular to ‘P’. Then

Q = 2R
Q = R
P = Q
None of the listed here

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Engineering Mechanics
Work done is said to be zero, when

No force acts on a body but some displacement takes place
Either (A) or (B)
Some force acts on a body, but displacement is zero
None of these

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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 mass
Center of gravity

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MORE MCQ ON Engineering Mechanics

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