Machine Design
Pitch point of a cam is

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

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Machine Design
A bolt of uniform strength can be developed by

None of these
Keeping the core diameter smaller than the diameter of the unthreaded portion
Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt
Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt

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