Electronic Devices and Circuits - Engineering

Q1:

Compared to bipolar junction transistor, a JFET has

A lower input impedance

B high input impedance and high voltage gain

C higher voltage gain

D high input impedance and low voltage gain

ANS:D - high input impedance and low voltage gain

JFET is voltage controlled device. Therefore its input impedance is high. But voltage gain is lower than in BJT.