MCQ ELECTRONICS

1. An electron device means the device in which the conduction of electrons takes place through
(a) a gas.
(b) vacuum.
(c) a semiconductor.
(d) a gas, semiconductor or vacuum.

2. Which one of the following is used as an active device in electronic
circuits ?
(a) Transformer. 

(b) Electric heater.
(c) SCR

(d) Loudspeaker.

4. The colour code of a 1 k resistance is
(a) black, brown, red.
(b) red, brown, brown. 
(c) brown, black, red.

(d) black, black, red.

5. Neutralizing capacitors are normally used in
(a) Audio amplifiers.
(b)Video amplifiers.
(c) RF and IF amplifiers.
(d)Operational amplifiers.

6. Which one of the following has the ability to act as an open circuit
for de and a short circuit for ac of high frequency.
(a) An inductor.
(c) A resistor.
(b) A capacitor.
(d) None of the above.

7. A device having characteristics very close to that of an ideal
voltage source is
(a) vacuum diode.
(c) transistor.
(b) zener diode.
(d) FET.

8. The maximum number of electrons which the valence shall of an
atom can have is
(a) 6
(b) 8
(c) 18

 (d) 2

According to free electron theory, electrons in a metal are subjected
(a) constant potential.
(b) sinusoidal potential.
(e) square-wave potential 

(d) non-periodic potential.

1.Electronics is that branch of engineering which deals with the application of?

A) electronic devices.
B) production of electronic components.
C) fission of uranium nuclei.
D) generation of small power

... Answer is A)