Q101 / 150 · MHT CET 2021 (24 Sep Shift 2) · Physics

The input a.c. voltage of frequency $60 \mathrm{~Hz}$ is applied to half-wave rectifier and also to full-wave rectifier. The output frequency in case of half-wave rectifier and that in case of full wave rectifier is respectively.

  • A
    $120 \mathrm{~Hz}, 60 \mathrm{~Hz}$
  • Correct answer
    B
    $60 \mathrm{~Hz}, 120 \mathrm{~Hz}$
  • C
    $60 \mathrm{~Hz}, 60 \mathrm{~Hz}$
  • D
    $120 \mathrm{~Hz}, 120 \mathrm{~Hz}$

Solution

In a half-wave rectifier, one pulse is obtained for each wave and hence 60 pulses will be obtained per second. In a full wave rectifier, two pulses are obtained for each wave and 120 pulses are obtained per second.

Hence, the correct answer is option: 'B'.

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