Question

How many methods of coupling are used for a cascading transistor configuration?

(a) 3

(b) 4

(c) 2

(d) 5

This question was addressed to me in a job interview.

My enquiry is from The Cascode Transistor Configuration topic in section Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer 1

The correct option is (b) 4

The best explanation: There are four types of coupling mechanisms used. They are Resistance-capacitance coupling, thermal coupling, impedance coupling and transformer coupling. Resistance-capacitance coupling is the most vastly used mechanism.