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Engineering Mechanics

Engineering Mechanics
The maximum mechanical advantage of a lifting machine is

m
1 / m
1 - m
1 + m

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Engineering Mechanics
If the gravitational acceleration at any place is doubled, then the weight of a body will be

g
√2.g
g/2
2g

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

2πN/180
2πN/60
πN/60
πN/180

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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

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

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Engineering Mechanics
The maximum efficiency of a lifting machine is

m/V.R.
V.R./m
1/(m × V.R.)
1/m

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Engineering Mechanics
A force while acting on a body may

Give rise to the internal stresses in it
Change its motion
Balance the forces, already acting on it
All of these

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MORE MCQ ON Engineering Mechanics

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