Correct Answer : Option (B) : Commutation of the motor
Explanation : Ripple frequency refers to a frequency of the residual AC voltage. After that, it has been rectified to DC in a power supply. Because of higher ripple content in the converter output motor, heating and commutating problems arise. It works on high DC voltage. For a half-wave rectifier, the value of ripple frequency i the same as the AC frequency, and for a full-wave, the value of ripple frequency is twice the original AC frequency.
