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Communication Systems - Engineering

Q1:

In a CD player the speed of CD is

A constant at 500 rpm

B constant at 200 rpm

C varies from 200 to 500 rpm

D none of the above

ANS:C - varies from 200 to 500 rpm

Since the circumference of outer tracks is more than that of tracks near the centre, the speed of disc is varied from 200 rpm to 500 rpm.