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Engineering Mechanics

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

None of these
Convex surface
Curved surface
Horizontal surface

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Engineering Mechanics
A screw jack used for lifting the loads is

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

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Engineering Mechanics
The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity.

None of these
Directly
Square root
Inversely

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Engineering Mechanics
If n = number of members and y = number of joints, then for a perfect frame, n = ?

43892
43864
43832
43865

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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
1.0 cm
1.5 cm
2.5 cm

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG / Ah2
IP = IG + Ah2
IP = Ah2 / IG
IP = IG - Ah2

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