A full-wave rectifier is connected to a 50 Hz AC mains supply. What is the frequency of the fundamental component present in the output ripple?

25 Hz
50 Hz
70.7 Hz
100 Hz

Correct answer: 100 Hz

Solution

A full-wave rectifier produces two output pulses per input cycle, so the fundamental ripple frequency is twice the mains frequency: 2*50 = 100 Hz.

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