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Engineering Mechanics

Engineering Mechanics
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

3r/ 8
4r/ 3π
3r/4π
8r/3

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Engineering Mechanics
The unit of angular velocity is

Both (B) and (C)
Revolutions/min
m/min
rad/s

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Engineering Mechanics
One kg force is equal to

7.8 N
12 N
8.9 N
9.8 N

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Engineering Mechanics
A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is (where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)

MS/3
None of these
MS/4
MS/5

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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
Zero
Minimum
Maximum

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

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

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MORE MCQ ON Engineering Mechanics

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