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Engineering Mechanics

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
The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by

ω.r
ω²/r
ω².r
ω/r

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Engineering Mechanics
The efficiency of a lifting machine is the ratio of

Output to the input
All of these
Mechanical advantage to the velocity ratio
Work done by the machine to the work done on the machine

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Engineering Mechanics
A force while acting on a body may

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

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Engineering Mechanics
From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

0.5 cm
1.5 cm
2.5 cm
1.0 cm

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Engineering Mechanics
In actual machines, mechanical advantage is _________ velocity ratio.

Greater than
Less than
Equal to
None of these

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MORE MCQ ON Engineering Mechanics

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