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Engineering Mechanics

Engineering Mechanics
The rate of doing work is known as

Power
None of these
Kinetic energy
Potential energy

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Engineering Mechanics
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is

2mr²/5
7mr²/5
2mr²/3
7mr²/3

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

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

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Engineering Mechanics
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

None of these
Principle of independence of forces
Principle of resolution of forces
Principle of transmissibility of forces

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Engineering Mechanics
The matter contained in a body, is called

Weight
Impulsive force
Mass
Momentum

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Engineering Mechanics
The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

(p² + q²)/4
(4p² - q²)/6
(p² - q²)/4
[√(4p² - q²)]/6

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