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Engineering Mechanics

Engineering Mechanics
The rate of doing work is known as

Potential energy
None of these
Power
Kinetic energy

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Engineering Mechanics
The coefficient of friction depends upon

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

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Engineering Mechanics
If ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,

P - m.a = 0
P + m.a = 0
P × m.a = 0
P/m.a = 0

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Engineering Mechanics
Center of gravity of a thin hollow cone lies on the axis at a height of

One-fourth of the total height above base
One-half of the total height above base
One-third of the total height above base
Three-eighth of the total height above the base

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Engineering Mechanics
The power developed by a body acted upon by a torque 'T' Newton meter (N - m) and revolving at ω radian/s is given by

T.ω/4500 (in kilowatts)
T.ω (in watts)
T.ω/60 (in watts)
T.ω/75 (in kilowatts)

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Engineering Mechanics
A particle inside a hollow sphere of radius r, having coefficient of friction µ can rest up to height of

r/3
r/2
r/A
0.134 r

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MORE MCQ ON Engineering Mechanics

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