What is cam profile? - Theory of Machines - 2

Q.  Which of the following statements is/are true for cam profile?  
- Published on 06 Aug 15

a. Pitch point on the pitch curve has minimum pressure angle
b. In case of roller follower, trace point represents centre of the roller
c. Pitch circle is drawn through trace point from the center of cam
d. All of the above

ANSWER: In case of roller follower, trace point represents centre of the roller

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