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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid cylinder of mass 'm', radius 'r' and length 'l' about the longitudinal axis or polar axis is

mr²/8
mr²/2
mr²/4
mr²/6

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Engineering Mechanics
The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

(1/2π). √(l/g)
(1/2π). √(g/l)
2π. √(l/g)
None of these

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Engineering Mechanics
The forces which do not meet at one point and their lines of action do not lie on the same plane are known as

None of these
Non-coplanar concurrent forces
Coplanar concurrent forces
Coplanar non-concurrent forces

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Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

2mr²/3
mr²/2
mr²
2mr²/5

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Engineering Mechanics
A machine having an efficiency less than 50%, is known as

Ideal machine
Neither reversible nor non-reversible machine
Reversible machine
Non-reversible machine

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Engineering Mechanics
The energy possessed by a body, for doing work by virtue of its position, is called

Potential energy
Kinetic energy
Chemical energy
Electrical energy

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