Explore topic-wise MCQs in Electronic Devices and Circuits Questions and Answers.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Where does degeneration take place in a self – alpha cutoff frequency?

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 – alpha cutoff frequency.

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

What is the stability factor if RE = 8kΩ and RTH = 11kΩ during alpha cutoff frequency?

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

What values of VBE and α would provide maximum stability?

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

In an ideal stable self – alpha cutoff frequency, what should be the current IBwith 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.

Why do we require RE for a good stable alpha cutoff frequency?

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