If a half-wave rectifier is used to convert 50 Hz AC into DC, then the number of pulses present in the rectifier voltage is:
Correct answer: B. 50
- A. 25
- B. 50
- C. 100
- D. 75
Explanation
Option A) 25 is not correct because it does not correspond to the frequency of the AC input or the number of pulses in the rectifier output. Option B) Half-wave rectifier conducts once during a cycle and a full-wave rectifier conducts twice during a cycle. Therefore, if the input frequency is 50 Hz, then the output frequency for half-wave and full-wave rectifiers are 50 and 100 Hz respectively. Option C) 100 is not correct because it corresponds to the number of pulses in a full-wave rectifier, where the output voltage has two pulses per cycle of the AC input. Option D) 75 is not correct because it does not correspond to the frequency of the AC input or the number of pulses in the rectifier output.
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About Rectification
Rectification converts alternating current into unidirectional current using semiconductor diodes. The content includes half wave and full wave rectifiers, bridge circuits, output waveforms, ripple and smoothing with capacitors, with the difference between rectification and voltage regulation kept clear.
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