Download Aptitude Crack
img not found img not found

Analog Electronics - Engineering

Q1:

To obtain very high I/P and O/P impedances in a feedback amplifier, the topology used is

A voltage series

B current series

C voltage shunt

D current shunt

ANS:B - current series

Voltage shunt means voltage sampling and shunt mixing. So in voltage sampling impedance will be reduced and in shunt mixing also impedance is reduced. In voltage shunt feedback amplifier both input and output impedance is very low.

In current series feedback amplifier both input and output impedances are very high.

So option B is the correct answer.