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Engineering Mechanics

Engineering Mechanics
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

2πN/180
2πN/60
πN/180
πN/60

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Engineering Mechanics
The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplanar concurrent forces.

Either A or B
Lie
Do not lie
None of these

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Engineering Mechanics
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

45° + β/2
β/2
30° + β/2
60° + β/2

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Engineering Mechanics
If the body falls freely under gravity, then the gravitational acceleration is taken as

-9.8 m/s2
-8.9 m/s2
+9.8 m/s2
+8.9 m/s2

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

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

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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
First
Third
Second

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MORE MCQ ON Engineering Mechanics

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