A transformer is used in rectification to _ the supply voltage.
Correct answer: B. Step down
- A. Step up
- B. Step down
- C. Equalize
- D. None of them
Explanation
In a half-wave rectifier, we generally use a step-down transformer because the voltage needed for the diode is very small. Applying a large AC voltage without using a transformer will permanently destroy the diode.
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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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