A dc to dc transistor chopper supplied from a fixed voltage dc source feeds a fixed-resistive-inductive load and a free-wheeling diode.
The chopper operates at 1 kHz and 50% duty cycle.
Without changing the value of the average dc current through the load, if it is desired to reduce the ripple content of load current, the control action needed will
A. increase the chopper frequency keeping the duty cycle constant
B. increase the chopper frequency and duty cycle in equal ratio
C. decrease only the chopper frequency
C. decrease only the duty cycle
Show Answer
Answer: A
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