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Engineering Mechanics

Engineering Mechanics
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

40
10
20
5

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Engineering Mechanics
The maximum acceleration of a particle moving with simple harmonic motion is

ωr
ω/r
ω
ω²r

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Engineering Mechanics
A machine having an efficiency greater 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 wheels of a moving car possess

Kinetic energy of rotation only
Potential energy only
Kinetic energy of translation only
Kinetic energy of translation and rotation both

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Engineering Mechanics
The resultant of two equal forces ‘P’ making an angle ‘θ’, is given by

2P cosθ/2
2P cotθ/2
2P sinθ/2
2P tanθ/2

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Engineering Mechanics
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

2πN/180
πN/180
2πN/60
πN/60

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