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Theory of Machine

Theory of Machine
The lower pairs are _________ pairs.

None of these
Force-closed
Self-closed
Friction closed

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Theory of Machine
The dynamic friction is the friction experienced by a body, when the body

None of these
Is in motion
Is at rest
Just begins to slide over the surface of the other body

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Theory of Machine
The ratio of maximum fluctuation of speed to the mean speed is called

None of these
Coefficient of fluctuation of speed
Maximum fluctuation of speed
Fluctuation of speed

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Theory of Machine
In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

30°-40°
25°-30°
15°-25°
10°-15°

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Theory of Machine
A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the

Clearance between journal and bearing
Angular velocity of journal
Magnitude of the forces on journal
Radius of journal

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Theory of Machine
The motion between a pair which takes place in ____ is known as incompletely constrained motion.

One direction only
Two directions only
More than one direction
None of the listed here

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