Theory of Machine
Angle of dwell of cam is defined as the angle

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
Of rotation of the cam for definite displacement of the follower
During which the follower returns to its initial position

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Theory of Machine
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then

Both open belt drive and crossed belt drive is recommended
Crossed belt drive is recommended
The drive is recommended depending upon the torque transmitted
Open belt drive is recommended

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