The given equivalent circuit belongs to-

This question was previously asked in
RSMSSB JE Electrical (Diploma) 19 May 2022 Official Paper
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  1. PIN diode
  2. Tunnel diode
  3. Zener diode
  4. Varactor diode

Answer (Detailed Solution Below)

Option 4 : Varactor diode
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Detailed Solution

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The given figure represents the varactor diode.

A varactor diode, also known as a Varicap or volt-cap, is a type of PN junction diode primarily utilized in the reverse-biased mode. It is a device whose capacitance varies with the variation in the applied reverse bias potential.

PIN diode

Tunnel diode

Zener diode

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