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Engineering Mechanics

Engineering Mechanics
A screw jack used for lifting the loads is

An ideal machine
None of these
A non-reversible machine
A reversible machine

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Engineering Mechanics
In order to completely specify angular displacement by a vector, it must fix

Magnitude of angular displacement
Sense of angular displacement
All of these
Direction of the axis of rotation

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Engineering Mechanics
The slope on the road surface generally provided on the curves is known as

Angle of friction
Angle of banking
Angle of repose
None of these

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

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

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Engineering Mechanics
A smooth cylinder lying on its convex surface remains in __________ equilibrium.

Unstable
Neutral
Stable
None of these

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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

1.5 cm
1.0 cm
2.5 cm
0.5 cm

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