Question

A class A power amplifier is sometimes called ____________ amplifier

(a) Reciprocating

(b) Single – ended

(c) Symmetrical

(d) Differential

This question was posed to me by my school principal while I was bunking the class.

Origin of the question is Class A Output Stage in chapter Differential and Multistage Amplifiers of Electronic Devices & Circuits

Answer 1

Correct choice is (b) Single – ended

Easiest explanation: Class-A designs can be simpler than other classes such as class -AB and -B designs require two connected devices in the circuit (push and pull),  each to handle one half of the waveform whereas class A can use a single device that’s why it is considered as a single ended amplifier.