1000+ Analog Electronics Question Bank (Papers) with Answers Pdf - 1

Question: 1

For thermionic emission

(A) a material with low work function is preferable

(B) the work function of the material has no importance

(C) a material with high work function is preferable

(D) none of the above

Question: 2

In a N-type semiconductor material holes are

(A) minority charge carriers

(B) majority charge carriers

(C) low charge carriers

(D) high charge carriers

Question: 3

The electrical power output of a photo diode is maximum when a

(A) small reverse bias exists across it

(B) large reverse bias exists across it

(C) small forward current flows through it, irrespective of the bias

(D) small forward bias exits across it

Question: 4

Conduction electrons have more mobility than holes because they

(A) experience collision less frequently

(B) have negative charge

(C) need less energy to move

(D) are lighter

Question: 5

An emitter follower has high input impedance because

(A) large biasing resistance is used

(B) the emitter base junction is highly reverse biased

(C) large emitter resistance is used

(D) there is negative feedback is the base emitter circuit