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Theory of Machine

Theory of Machine
Rectilinear motion of piston is converted into rotary by

Connecting rod
Slider crank
Cross head
Gudgeon pin

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Theory of Machine
In a turning moment diagram, the variations of energy above and below the mean resisting torque line is called

None of the listed here
Maximum fluctuation of energy
Fluctuation of energy
Coefficient of fluctuation of energy

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Theory of Machine
The Hooke's joint consists of:

Four forks
Two forks
One fork
Three forks

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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

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

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Theory of Machine
In an open pair, the two elements of a pair

Have a line or point contact when in motion
Are kept in contact by the action of external forces, when in motion
Are not held together mechanically
Have a surface contact when in motion

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Theory of Machine
The instantaneous centers which vary with the configuration of mechanism are called

Permanent instantaneous centers
Fixed instantaneous centers
Neither fixed nor permanent instantaneous centers
None of these

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