Explore topic-wise MCQs in Electronic Devices and Circuits.

This section includes 10 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.

We use approximate hybrid models for transistors because they introduce less than 10% error.

A. True
B. False
Answer» B. False
Discussion
2.

What is the approximate hybrid parameter voltage gain of a CC amplifier?

A. 1 + h<sub>ie</sub> R<sub>i</sub>
B. 1 h<sub>ie</sub> R<sub>i</sub>
C. 1 + h<sub>ie</sub> / R<sub>i</sub>
D. 1 h<sub>ie</sub> / R<sub>i</sub>
Answer» E.
Discussion
3.

What is the approximate hybrid parameter input resistance of a CC amplifier?

A. h<sub>ie</sub> (1 + h<sub>fe</sub>) R<sub>L</sub>
B. h<sub>ie</sub> + (1 + h<sub>fe</sub>) R<sub>L</sub>
C. h<sub>ie</sub> (1 + h<sub>fe</sub>) / R<sub>L</sub>
D. h<sub>ie</sub> + (1 + h<sub>fe</sub>) / R<sub>L</sub>
Answer» C. h<sub>ie</sub> (1 + h<sub>fe</sub>) / R<sub>L</sub>
Discussion
4.

What is the approximate hybrid parameter current gain of a CC amplifier?

A. 1 + h<sub>oe</sub>
B. 1 h<sub>oe</sub>
C. 1 + h<sub>fe</sub>
D. 1 h<sub>fe</sub>
Answer» D. 1 h<sub>fe</sub>
Discussion
5.

What is the approximate hybrid parameter voltage gain of a CB amplifier?

A. h<sub>fe</sub> R<sub>L</sub> / h<sub>ie</sub>
B. -h<sub>fe</sub> R<sub>L</sub> / h<sub>ie</sub>
C. h<sub>fe</sub> R<sub>L</sub> / h<sub>oe</sub>
D. -h<sub>fe</sub> R<sub>L</sub> / h<sub>oe</sub>
Answer» B. -h<sub>fe</sub> R<sub>L</sub> / h<sub>ie</sub>
Discussion
6.

What is the approximate hybrid parameter input resistance of a CB amplifier?

A. h<sub>fe</sub> / 1 h<sub>fe</sub>
B. h<sub>fe</sub> / 1 + h<sub>fe</sub>
C. h<sub>ie</sub> / 1 h<sub>fe</sub>
D. h<sub>ie</sub> / 1 + h<sub>fe</sub>
Answer» E.
Discussion
7.

What is the approximate hybrid parameter current gain of a CB amplifier?

A. -h<sub>fe</sub> / 1 + h<sub>fe</sub>
B. -h<sub>fe</sub> / 1 h<sub>fe</sub>
C. h<sub>fe</sub> / 1 + h<sub>fe</sub>
D. h<sub>fe</sub> / 1 h<sub>fe</sub>
Answer» D. h<sub>fe</sub> / 1 h<sub>fe</sub>
Discussion
8.

What is the approximate hybrid parameter voltage gain of a CE amplifier?

A. h<sub>fe</sub> R<sub>L</sub> / h<sub>ie</sub>
B. -h<sub>fe</sub> R<sub>L</sub> / h<sub>ie</sub>
C. h<sub>fe</sub> R<sub>L</sub> / h<sub>oe</sub>
D. -h<sub>fe</sub> R<sub>L</sub> / h<sub>oe</sub>
Answer» C. h<sub>fe</sub> R<sub>L</sub> / h<sub>oe</sub>
Discussion
9.

What is the approximate hybrid parameter input resistance of a CE amplifier?

A. h<sub>oe</sub>
B. h<sub>ib</sub>
C. h<sub>ic</sub>
D. h<sub>ie</sub>
Answer» E.
Discussion
10.

What is the approximate hybrid parameter current gain of a CE amplifier?

A. -h<sub>fe</sub>
B. h<sub>fe</sub>
C. -h<sub>fc</sub>
D. h<sub>fc</sub>
Answer» B. h<sub>fe</sub>
Discussion