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mechanical engineering theory of machines
1. In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done
(A): because of difficulty in manufacturing cam profile
(B): because of loose contact of follower with cam surface
(C): because the uniform velocity motion is a partial parabolic motion
(D): in order to have acceleration in beginning and retardation at the end of stroke within the finite limits
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