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Engineering Mechanics

Engineering Mechanics
The velocity ratio of a first system of pulleys with 4 pulleys is

16
8
20
4

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

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

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Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

2π/ω
ω/2π
π/ω
2π × ω

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

Electrical energy
Potential energy
Kinetic energy
Chemical energy

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Engineering Mechanics
The unit of angular velocity is

rad/s
Revolutions/min
Both (B) and (C)
m/min

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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

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

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