Explore topic-wise MCQs in Electronic Devices Circuits.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

Where does degeneration take place in a self – bias circuit?

A. Across RB
B. Across RE
C. No degeneration occurs
D. Across RC
Answer» C. No degeneration occurs
Discussion
2.

Collector base feedback and emitter feedback combined together provide stability for self – bias circuits.

A. True
B. False
Answer» B. False
Discussion
3.

What is the stability factor if RE = 8kΩ and RTH = 11kΩ?

A. 1.335
B. 2.375
C. 1.727
D. 0.272
Answer» C. 1.727
Discussion
4.

What values of VBE and β would provide maximum stability?

A. VBE = 5V, β = 50
B. VBE = 4V, β = 100
C. VBE = 4.5V, β = 50
D. It is irrelevant
Answer» E.
Discussion
5.

In an ideal stable self – bias circuit, what should be the current IB with respect to IC?

A. IB should be 20% of IC
B. IB should be 5% of IC
C. IB should be 10% of IC
D. IB should be 50% of IC
Answer» D. IB should be 50% of IC
Discussion
6.

In the circuit given below, assume VCC = 4V, VBB = 5V, VBE = 0.7V, RE = 3.3kΩ, RC = 10kΩ, RB = 40kΩ and β = 100. What is the current IE?

A. 1.388mA
B. 0.012mA
C. 10.47mA
D. 1.165mA
Answer» B. 0.012mA
Discussion
7.

Why do we require RE for a good stable bias circuit?

A. To obtain a current IE sensitive to β and VBE
B. To obtain a current IB sensitive to β and VBE
C. To obtain a current IE insensitive to β and VBE
D. To obtain a current IB insensitive to β and VBE
Answer» D. To obtain a current IB insensitive to β and VBE
Discussion
8.

How many main types of bias circuits are there in bipolar transistors?

A. 3
B. 4
C. 5
D. 6
Answer» D. 6
Discussion
9.

What is the function of a bias circuit?

A. To simplify the circuit
B. To provide a non – linear output
C. To optimize the power
D. To provide steady current or voltage
Answer» E.
Discussion