A Zener diode is used in _______ for voltage regulation.

This question was previously asked in
RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 3)
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  1. Forward Bias
  2. Short circuit
  3. Open circuit
  4. Reverse Bias

Answer (Detailed Solution Below)

Option 4 : Reverse Bias
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Concept:

Zener diode:

F1 J.S 30.3.20 Pallavi D6

  • A Zener diode is a heavily doped semiconductor device that is designed to operate in the reverse direction.
  • A Zener diode operates just like a normal diode when it is forward-biased.
  • When the voltage across the terminals of a Zener diode is reversed and the potential reaches the Zener Voltage (knee voltage), the junction breaks down and the current flows in the reverse direction. This effect is known as the Zener Effect.
  • The Zener diode acts as a voltage regulator.
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