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Theory of Machine

Theory of Machine
A slider crank chain consists of following numbers of turning and sliding pairs

2, 2
3, 1
4, 0
1, 3

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Theory of Machine
In S.H.M., the velocity vector w.r.t. displacement vector

Leads by 180°
Lags by 90°
Are in phase
Leads by 90°

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Theory of Machine
Which of the following would constitute a link?

Piston rod and cross head
Piston and piston rod
Piston, piston rod and cross head
Piston, crank pin and crank shaft

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Theory of Machine
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

At the origin
Any one of these
Below the origin
Above the origin

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Theory of Machine
Whirling speed of the shaft is the speed at which

Torsional vibrations occur
Combination of transverse and longitudinal vibration occurs
Shaft tends to vibrate vigorously in transverse direction
Shaft tends to vibrate in longitudinal direction

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Theory of Machine
The stress induced in a body will be shear stress, when it is subjected to

Transverse vibrations
Torsional vibrations
Longitudinal vibrations
None of these

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