The Applied Electronics MCQ || Test Revision paper !!!

1) The types of coupling used in the BJT (Bipolar Junction Transistor) amplifier.

a) Resistance capacitance (RC) coupling.

b) Impedance coupling

c) Transformer coupling

d) All of the above

Answer : (d) All of the above.

2) The phase shift of positive feedback circuit.

a) 90° Degree

b) 180° Degree

c) 45° Degree

d) 0° or 360° Degree

Answer : (d) 0° or 360° Degree.

3) The current gain (β) in the power amplifier.

a) Low 5 to 20

b) Low 40 to 65

c) Low 70 to 95

d) Low 25 to 40

Answer : Low 5 to 20

4) What is the angle of conduction of Class A power amplifier ?

a) 90° Degree angle

b) 180° Degree angle

c) 45° Degree angle

d) 360° Degree angle

Answer : 360° Degree angle

5) What is the angle of conduction of Class B power amplifier ?

a) 90° Degree angle

b) 180° Degree angle

c) 45° Degree angle

d) 360° Degree angle

Answer : 180° Degree angle

6) What is the angle of conduction of Class C power amplifier ?

a) 90° Degree angle

b) 100° to 150° Degree angle

c) 180° to 200° Degree angle

d) 360° Degree angle

Answer : 100° to 150° Degree angle

7) What is the angle of conduction of Class AB power amplifier ?

a) 90° Degree angle

b) 100° to 150° Degree angle

c) 180° to 200° Degree angle

d) 360° Degree angle

Answer : 180° to 200° Degree angle

8) What is the application of single tuned amplifier in the below option.

a) T.V Receiver

b) Radio Receiver

c) Tuned Radio Frequency (TRF) Receiver

d) Both a) T.V Receiver & c) 

Answer : d) Both a) T.V Receiver & c) Tuned Radio Frequency (TRF) Receiver

9) What are the application of RC coupled amplifier.

a) In Tape Recorder

b) In stereo amplifier

c) Widely used as voltage amplifier

d) All of the above

Answer : d) All of the above

10) The different types of power amplifier.

a) Class A power amplifier

b) Class B power amplifier

c)Class C power amplifier

d) All of the above

Answer : d) All of the above