Question

How many methods of coupling are used for a difference amplifier?

(a) 3

(b) 4

(c) 2

(d) 5

The question was asked by my college director while I was bunking the class.

I want to ask this question from Transistor Difference Amplifiers topic in section Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer 1

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.