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Engineering Mechanics

Engineering Mechanics
The unit of angular acceleration is

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

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

0.6 r
0.5 r
0.7 r
0.8 r

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Engineering Mechanics
The mechanical advantage of a lifting machine is the ratio of

All of these
Load lifted to the effort applied
Distance moved by effort to the distance moved by load
Output to the input

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Engineering Mechanics
If a number of forces are acting at a point, their resultant is given by

√[(∑V)2 + (∑H)2]
(∑V)2 +(∑H)2 +2(∑V)(∑H)
√[(∑V)2 +(∑H)2 +2(∑V)(∑H)]
(∑V)2 + (∑H)2

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

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

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Engineering Mechanics
If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be

Infinity
Maximum
Minimum
Zero

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MORE MCQ ON Engineering Mechanics

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