Cylindrical cams can be classified as

Solution (By Examveda Team)

A cylindrical cam is a type of cam where the follower moves along the surface of a rotating cylinder. The profile controlling the follower's motion is cut on the surface or end of the cylinder. Cylindrical cams are typically used when a translating or oscillating follower motion is required, guided by the groove on the cam's cylindrical surface.

Correct Answer: Option D – None of the above

Explanation:
Cams are mechanical elements used to convert rotary motion into linear or oscillatory motion. Based on geometry and motion, cams can be classified in different ways. Cylindrical cams specifically refer to cams where the follower moves parallel or perpendicular to the cam axis and follows a groove on the cylindrical surface.

Cylindrical cams are typically classified based on the type of follower motion (translating or oscillating) or based on the profile of the groove (helical, radial, etc.), but not as "circular" or "tangent".

The options given are unrelated to the standard classification of cylindrical cams:
Option A: Circular – This refers more to disc cams with circular profiles, not cylindrical cams.
Option B: Tangent – This is a term used for tangent or radial cam profiles, not for cylindrical cams.
Option C: Reciprocating – This refers to follower motion, not a classification of cams themselves.

Since none of the given options correctly represent types of cylindrical cams,

Conclusion:
The correct answer is Option D – None of the above.