In a power amplifier the collector current flows for 270Â° of the input cycle. The operations is

Electronics and Communication Engineering (ECE) : Analog Electronics - Quiz(MCQ)

class A

class B

class AB

class C

Correct Answer : Option (C) : class AB

Explanation : In class A operation IC exists for 360°. In class B operation IC exists for 180°. In between there is the class AB.

Recently Updated in Analog Electronics Questions

A junction Field Effect Transistor can operate in

depletion mode only

enhancement mode only

depletion and enhancement modes

neither depletion nor enhancement modes

Correct Answer : depletion mode only

In a base driver amplifier the voltage gain is the ratio of

ac emitter voltage to ac base voltage

ac collector voltage to ac base voltage

ac base voltage to ac emitter voltage

ac collector voltage to ac emitter voltage

Correct Answer : ac collector voltage to ac base voltage

In a CE amplifier it is desired that the signal should be able to swing equally in both directions. Then the Q point should be

at the centre of dc load line

at the centre of collector voltage

at the centre of ac load line

at the centre of collector current

Correct Answer : at the centre of ac load line