Electronic Devices MCQ Multiple Choice Questions Answers for Practice

Q: 2. In an npn transistor, the majority carriers in the emitter are neither both free electrons

Correct Answer is: free electrons

Q: 4. The base of an npn transistor is thin and

Correct Answer is: Lightly doped

Q: 5. The emitter of a transistor is generally doped the heaviest because it

Correct Answer is: has to dissipate maximum power

Q: 7. A FET consists of a

Correct Answer is: all the above

Q: 8. The extremely high input impedance of a MOSFET is primarily due to the

Correct Answer is: extremely small leakage current of its gate capacitor

Q: 9. When a transistor is used as a switch, it is stable in which two distinct regions?

Correct Answer is: saturation and cutoff

Q: 10. The term BJT is short for

Correct Answer is: bipolar junction transistor

Q: 14. When not in use, MOSFET pins are kept at the same potential through the use of:

Correct Answer is: conductive foam

Q: 20. A very simple bias for a D-MOSFET is called:

Correct Answer is: zero biasing

1. A transistor has how many PN Junctions?

2. In an npn transistor, the majority carriers in the emitter are neither both free electrons

free electrons
holes
niether (a) and (b)
both (a) and (b)

3. The barrier potential across each silicon depletion layer is

0 V
0.3 V
0.7 V
1 V

4. The base of an npn transistor is thin and

Heavily doped
Lightly doped
Metallic
Doped by a Pentavalent material

5. The emitter of a transistor is generally doped the heaviest because it

has to supply the charge carriers
is the first region of the transistor
must possess low resistance
has to dissipate maximum power

6. When a transistor is fully switched ON, it is said to be

shorted
saturated
open
cut-off

7. A FET consists of a

source
drain
gate
all the above

8. The extremely high input impedance of a MOSFET is primarily due to the

absence of its channel
negative gate-source voltage
depletion of current carriers
extremely small leakage current of its gate capacitor

9. When a transistor is used as a switch, it is stable in which two distinct regions?

saturation and active
active and cutoff
saturation and cutoff
none of the above

10. The term BJT is short for

binary junction transistor
both junction transistor
base junction transistor
bipolar junction transistor

11. What are the two types of bipolar junction transistors?

pnn and nnp
ppn and nnp
pts and stp
npn and pnp

12. 12. The magnitude of dark current in a photo-transistor usually falls in what range?

13. Junction Field Effect Transistors (JFET) contain how many diodes?

14. When not in use, MOSFET pins are kept at the same potential through the use of:

conductive foam
nonconductive foam
shipping foil
a wrist strap

15. A MOSFET has how many terminals?

2 or 3
3
4
3 or 4

16. Hybrid means

mixed
single
biunique
none of the above

17. If the operating point changes, the h-parameters of transistor

also change
do not change
may or may not change
none of the above

18. There are .............. h-parameters of a transistor

two
four
three
none of the above

19. For a silicon transistor, when a base-emitter junction is forward-biased, it has a nominal voltage drop of

0.7 V
0.3 V
0.2 V
VCC

20. A very simple bias for a D-MOSFET is called:

self biasing
gate biasing
zero biasing
voltage-divider biasing

21. The dc load line on a family of collector characteristic curves of a transistor shows the

cutoff region
active region
saturation region
all of the above

22. When a transistor is used as a switch, it is stable in which two distinct regions?

active and cutoff
saturation and cutoff
saturation and active
none of the above

23. The h-parameter approach gives correct results for

small signals only
large signals only
both small and large signals
none of the above

Welcome to our Electronic Devices MCQs section, tailored for students and exam aspirants. Practice these multiple-choice questions to strengthen your understanding and prepare for various assessments.

About Electronic Devices MCQ Questions

Electronic Devices MCQs cover a wide range of topics, including semiconductor physics, diodes, transistors, and integrated circuits. These questions are designed to test your knowledge of fundamental concepts and practical applications in electronics.

Why Practice Electronic Devices Objective Questions?

Practicing these objective questions helps you prepare for school and college exams, competitive exams, and job interviews. They enhance your problem-solving skills, reinforce key concepts, and build confidence in your electronics knowledge.

Who Should Use These MCQs?

Students preparing for school or college exams
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