Electrical Engineering MCQ - English

Electronic Devices and Circuits MCQ Questions and Answers

Home | Electrical Engineering | Electronic Devices and Circuits

Electronic Devices and Circuits MCQ Questions and Answers: We provide lots of multiple choice questions and answers related to Electronic Devices and Circuits. here you can learn mcqs  questions for electrical engineering.

Page: 1/3

1) The forbidden energy gap between the valence band and conduction band will be least in case of

    Metals
    Semiconductors
    Insulators
    All of the above

Answer : A Discuss

2) For a NPN bipolar transistor, what is the main stream of current in the base region?

    Drift of holes
    Diffusion of holes
    Drift of electrons
    Diffusion of electrons

Answer : B Discuss

3) Assertion (A): A JFET can be used as a current source.
Reason (R): In beyond pinch off region the current in JFET is nearly constant.

    Both A and R are true and R is correct explanation of A
    Both A and R are true but R is not a correct explanation of A
    A is true but R is false
    A is false but R is true

Answer : A Discuss

4) For a P-N diode, the number of minority carriers crossing the junction depends on

    Forward bias voltage
    Potential barrier
    Rate of thermal generation of electron hole pairs
    None of the above

Answer : C Discuss

5) An electron in the conduction band

    Has higher energy than the electron in the valence band
    Has lower energy than the electron in the valence band
    Loses its charge easily
    Jumps to the top of the crystal

Answer : A Discuss

6) What is the necessary a.c. input power from the transformer secondary used in a half wave rectifier to deliver 500 W of d.c. power to the load?

    1232 W
    848 W
    616 W
    308 W

Answer : A Discuss

7) A thermistor is a

    Thermocouple
    Thermometer
    Miniature resistance
    Heat sensitive explosive

Answer : C Discuss

8) In an ideal diode there is no breakdown, no __________ current, and no forward __________ drop.

    Reverse, voltage
    Forward, current
    Forward, voltage
    Reverse, current

Answer : A Discuss

9) The dynamic resistance of a forward biased p-n diode

    Varies inversely with current
    Varies directly with current
    Is constant
    Is either constant or varies directly with current

Answer : A Discuss

10) Each cell of a static Random Access memory contains

    6 MOS transistor
    4 MOS transistor, 2 capacitor
    2 MOS transistor, 4 capacitor
    1 MOS transistor and 1 capacitor

Answer : A Discuss

Jump to Pages:

1 2 3

MCQ Category