Machine Design
In cylindrical cams, the follower moves

In any direction irrespective of cam axis
Along the cam axis
In a direction perpendicular to the cam axis
In a direction parallel to the cam axis

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Machine Design
The angle of twist of shaft is

Inversely proportional to (shaft diameter)²
Inversely proportional to (shaft diameter)⁴
Directly proportional to (shaft diameter)²
Directly proportional to (shaft diameter)⁴

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