Explore topic-wise MCQs in Electronic Devices and Circuits.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and 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 R<sub>B</sub>
B. Across R<sub>E</sub>
C. No degeneration occurs
D. Across R<sub>C</sub>
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 = 8k and RTH = 11k ?

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

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

A. I<sub>B</sub> should be 20% of I<sub>C</sub>
B. I<sub>B</sub> should be 5% of I<sub>C</sub>
C. I<sub>B</sub> should be 10% of I<sub>C</sub>
D. I<sub>B</sub> should be 50% of I<sub>C</sub>
Answer» D. I<sub>B</sub> should be 50% of I<sub>C</sub>
Discussion
5.

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

A. To obtain a current I<sub>E</sub> sensitive to and V<sub>BE</sub>
B. To obtain a current I<sub>B</sub> sensitive to and V<sub>BE</sub>
C. To obtain a current I<sub>E</sub> insensitive to and V<sub>BE</sub>
D. To obtain a current I<sub>B</sub> insensitive to and V<sub>BE</sub>
Answer» D. To obtain a current I<sub>B</sub> insensitive to and V<sub>BE</sub>
Discussion
6.

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

A. 3
B. 4
C. 5
D. 6
Answer» D. 6
Discussion
7.

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