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Engineering Mechanics

Engineering Mechanics
The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

D / d
D - d
D × d
D + d

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

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

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Engineering Mechanics
The resultant of the two forces ‘P’ and ‘Q’ is ‘R’. If ‘Q’ is doubled, the new resultant is perpendicular to ‘P’. Then

Q = R
Q = 2R
None of the listed here
P = Q

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Engineering Mechanics
The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)

2π. √(kG² + h²/gh)
2π. √(gh/kG² + h²)
1/2π. √(gh/kG² + h²)
1/2π. √(kG² + h²/gh)

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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
Minimum
Zero
Maximum

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

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MORE MCQ ON Engineering Mechanics

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