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Engineering Mechanics

Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

2π/ω
2π × ω
ω/2π
π/ω

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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
Constant
Both of above are wrong

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Engineering Mechanics
If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

Less inclined when moving
Less inclined when standing
More inclined when standing
More inclined when moving

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Engineering Mechanics
The coefficient of friction depends upon

Area of contact
All of these
Shape of the surfaces
Nature of surfaces

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Engineering Mechanics
Whenever a force acts on a body and the body undergoes a displacement, then

Body has kinetic energy of translation
Power is being transmitted
None of these
Work is said to be done

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Engineering Mechanics
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

None of these
g/3
g/4
g/2

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