Theory of Machine
Pitch point on a cam is

Any point on pitch curve
The point on cam pitch curve having the maximum pressure angle
Any point on pitch circle
The point on cam pitch curve having the minimum pressure angle

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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
Open belt drive is recommended
Crossed belt drive is recommended
The drive is recommended depending upon the torque transmitted

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