Bipolar Junction Transistor MCQs

Question 1

In the above question, what is the collector voltage?

Accepted Answer

12.3 V

Answer

14.8 V

Answer

7.6 V

Answer

9.7 V

Question 2

In voltage divider bias, operating point is 3 V, 2 mA. If VRc = 2.2 Ica, what is the value of RE?

Accepted Answer

800 a

Answer

2000 a

Answer

1400 a

Answer

1600 a

Question 3

A collector collects

Accepted Answer

holes from the base in case of PNP transistor.

Answer

electrons from the base in case of PNP transistor

Answer

electrons from the emitter in case PNP transistor

Answer

holes from the base in case of NPN transistor

Question 4

In a PNP transistor, with normal bias

Accepted Answer

the collector-base junction is reverse biased and the emitter base junction is forward biased

Answer

the collector junction has negligible resistance

Answer

only holes cross the collector junction

Answer

only majority carriers cross the collector junction.

Question 5

In a NPN transistor the function of the emitter is

Accepted Answer

to emit or inject electrons into the base

Answer

to emit or inject holes into the collector

Answer

to emit or inject electrons into the collector

Answer

to emit or inject holes into the base.

Question 6

In a PNP transistor, with normal bias, the emitter junction

Accepted Answer

offers a low resistance

Answer

is always reverse biased

Answer

offers very high resistance

Answer

remains open

Question 7

In a NPN transistor, when emitter junction is forward biased and collector junction is reverse biased, the transistor will operate in

Accepted Answer

active region

Answer

saturation region

Answer

cut off region

Answer

inverted region

Question 8

Which of the following statement is correct?

Accepted Answer

The FET is unipolar, while junction transistors are bipolar.

Answer

FET and junction transistor both are unipolar

Answer

FET and junction transistor both are bipolar

Answer

The FET is bipolar, while junction transistors are unipolar

Question 9

A transistor may fail due to

Accepted Answer

any of the above

Answer

open weld at the wire leads to the semiconductor

Answer

short circuit caused by momentary overload

Answer

overheating due to circuit failures