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Engineering Mechanics

Engineering Mechanics
A smooth cylinder lying on a __________ is in neutral equilibrium.

Curved surface
Convex surface
None of these
Horizontal surface

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Engineering Mechanics
On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

Away from the wall at its upper end
Towards the wall at its upper end
Upwards at its upper end
Downwards at its upper end

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is

bd³/36
db³/12
bd³/12
db³/36

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Engineering Mechanics
An ideal machine is one whose efficiency is

Between 60 and 70 %
Between 80 and 90%
1
Between 70 and 80%

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Engineering Mechanics
In order to double the period of simple pendulum, the length of the string should be

Halved
Quadrupled
Doubled
None of these

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Engineering Mechanics
Coefficient of friction depends upon

None of these
Both (A) and (B)
Area of contact only
Nature of surface only

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MORE MCQ ON Engineering Mechanics

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