The figure shown above represents the construction of which of the following?

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PGCIL DT Electrical 12 March 2022 (NR II) Official Paper

Answer 1

MOSFET (Metal Oxide Semiconductor Field Effect Transistor)

MOSFET transistor is a semiconductor device that is used for amplifying and switching electronic signals in electronic devices.

MOSFET is of two types:

1. Enhancement MOSFET:

In this kind of MOSFET, there is no predefined channel. The channel is constructed using the gate to source applied voltage.
More is the voltage on the gate, the better the device can conduct.

2. Depletion mode MOSFET:

In this type of MOSFET, the channel (between drain and source) is predefined and the MOSFET conducts without any application of the gate voltage.
As the voltage on the gate is either positive or negative, the channel conductivity decreases.
Depletion MOSFET can work in both depletion and enhancement modes.

RRB JE EC 12 D1