GATE Electrical Engineering (EE) 2020 Solved Paper

Question : 17 of 65

Marks: +1, -0

A common source amplifier with a drain resistance,

{RD}=4.7 {k} Ω

is powered using a

10 {V}

power supply. Assuming that the transconductance,

g_{m}=520 µ {A} {/} {V}

, the voltage gain of the amplifier is closest to:

Solution:

Voltage gain of common source amplifier,

A_{v}=-g_{m} R_{D}

=-520 × 10^{-6} × 4.7 × 10^{3}=-2.44

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