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THEORY OF MACHINE

Theory of Machine
When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than

1
0.25
0.5
2

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Theory of Machine
When the particles of a body moves perpendicular to its axis, then the body is said to have

None of these
Torsional vibration
Longitudinal vibration
Transverse vibration

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Theory of Machine
When there is a reduction in amplitude over every cycle of vibration, then the body is said to have

Damped vibration
Forced vibration
Under damped vibration
Free vibration

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Theory of Machine
Balancing of rotating and reciprocating parts of an engine is necessary when it runs at

Highs peed
Moderate speed
Any one of these
Slow speed

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Theory of Machine
The mechanism consisting of three turning pairs and one sliding pair, is called a

Whitworth quick return motion mechanism
Crank and slotted lever quick return motion mechanism
Single slider crank chain
All of these

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