Theory of Machine
The following is the inversion of slider crank chain mechanism

Hand pump
All of these
Whitworth quick return mechanism
Oscillating cylinder engine

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Theory of Machine
Cam angle is defined as the angle

Of rotation of the cam for a definite displacement of the follower
During which the follower returns to its initial position
Moved by the cam from the instant the follower begins to rise, till it reaches its highest position
Through which, the cam rotates during the period in which the follower remains in the highest position

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