In half-wave rectification, the output DC voltage is obtained for:
Correct answer: B. The positive half cycle of input AC only
- A. The negative half cycle of input AC only
- B. The positive half cycle of input AC only
- C. The negative and positive half cycles of input AC
- D. None of these
Explanation
In half-wave rectification, the output DC voltage is obtained only during one half of the input AC cycle.During half-wave rectification:The diode conducts current only when the input AC voltage is positive and exceeds the diode's forward voltage threshold.As a result, the diode allows current to flow only during the positive half-cycle of the input AC waveform.The output across the load is present only during this positive half-cycle, resulting in a pulsating DC output with gaps during the negative half-cycle and zero voltage.Therefore, in half-wave rectification, the output DC voltage is obtained only for the duration of the positive half-cycle of the input AC waveform. The output across the load is absent or zero during the negative half-cycle of the input AC.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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