Which of the following is NOT a type of Field Effect Transistor?

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SSC JE Electrical 11 Oct 2023 Shift 3 Official Paper-I

Answer 1

A thyristor is not a type of Field Effect Transistor (FET).

Thyristor

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A thyristor is a four-layer semiconductor device, consisting of alternating P-type and N-type materials (PNPN).
A thyristor usually has three electrodes: an anode, a cathode, and a gate, also known as a control electrode. The most common type of thyristor is the silicon-controlled rectifier (SCR).

Field Effect Transistor(FET)

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The field-effect transistor is a type of transistor that uses an electric field to control the flow of current in a semiconductor.
FETs have three terminals: the source (S), the drain (D), and the gate (G). It works in two modes: depletion and enhancement type.
Enhancement FET does not conduct at 0 volts, as there is no channel in this type to conduct. Depletion FET conducts at 0 volts as the channel is already present in it.