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Engineering Mechanics

Engineering Mechanics
Moment of inertia of a circular section about an axis perpendicular to the section is

πd3/16
πd3/32
πd4/32
πd4/64

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Engineering Mechanics
Centre of gravity of a solid cone lies on the axis at the height

Three eighth of the total height above the base
One fourth of the total height above base
One third of the total height above base
One-half of the total height above base

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Engineering Mechanics
A framed structure is imperfect, if the numbers of members are __________ (2j - 3).

Greater than
Less than
Equal to
Either (B) or (C)

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Engineering Mechanics
A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is

Ideal
Non-reversible
None of these
Reversible

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Engineering Mechanics
The forces, which meet at one point and their lines of action also lie on the same plane, are known as

Coplanar non-concurrent forces
Non-coplanar non-concurrent forces
Non-coplanar concurrent forces
Coplanar concurrent forces

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

Convex surface
Curved surface
Horizontal surface
None of these

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