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 simplified CE hybrid models to obtain approximate values.

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

What is the value of overall voltage gain in the simplified CE hybrid model while considering RS?

A. V<sub>B</sub> / V<sub>S</sub>
B. V<sub>C</sub> / V<sub>S</sub>
C. V<sub>B</sub> V<sub>S</sub>
D. V<sub>C</sub> V<sub>S</sub>
Answer» B. V<sub>C</sub> / V<sub>S</sub>
Discussion
3.

What is the value of overall current gain in the simplified CE hybrid model while considering RS?

A. A<sub>I</sub> I<sub>B</sub> / I<sub>S</sub>
B. A<sub>I</sub> I<sub>C</sub> / I<sub>S</sub>
C. A<sub>I</sub> I<sub>S</sub> / I<sub>C</sub>
D. A<sub>I</sub> I<sub>S</sub> / I<sub>B</sub>
Answer» B. A<sub>I</sub> I<sub>C</sub> / I<sub>S</sub>
Discussion
4.

What is the value power gain in the simplified CE hybrid model?

A. A<sub>V</sub> A<sub>I</sub>
B. A<sub>V</sub> + A<sub>I</sub>
C. A<sub>V</sub> A<sub>I</sub>
D. A<sub>V</sub> / A<sub>I</sub>
Answer» D. A<sub>V</sub> / A<sub>I</sub>
Discussion
5.

What is the value of output resistance in the simplified CE hybrid model?

A.
B. 0
C. h<sub>ic</sub>
D. h<sub>ie</sub>
Answer» B. 0
Discussion
6.

What is the magnitude of voltage generated at emitter circuit of a simplified CE hybrid model?

A. h<sub>re</sub> h<sub>fe</sub> / I<sub>b</sub> R<sub>L</sub>
B. h<sub>re</sub> h<sub>fe</sub> I<sub>b</sub> R<sub>L</sub>
C. h<sub>re</sub> h<sub>fe</sub> / I<sub>C</sub> R<sub>L</sub>
D. h<sub>re</sub> h<sub>fe</sub> I<sub>C</sub> R<sub>L</sub>
Answer» C. h<sub>re</sub> h<sub>fe</sub> / I<sub>C</sub> R<sub>L</sub>
Discussion
7.

What is the value of voltage gain in the simplified CE hybrid model?

A. h<sub>fe</sub> R<sub>L</sub> / h<sub>re</sub>
B. h<sub>fe</sub> R<sub>L</sub> / h<sub>re</sub>
C. h<sub>fe</sub> R<sub>L</sub> / h<sub>ie</sub>
D. h<sub>fe</sub> R<sub>L</sub> / h<sub>ie</sub>
Answer» E.
Discussion
8.

What is the value of current gain in the simplified CE hybrid model?

A. h<sub>fe</sub>
B. -h<sub>fe</sub>
C. h<sub>re</sub>
D. h<sub>re</sub>
Answer» C. h<sub>re</sub>
Discussion
9.

How do we calculate the value of IC in the simplified CE hybrid model?

A. I<sub>C</sub> = h<sub>re</sub> I<sub>B</sub>
B. I<sub>C</sub> = -h<sub>re</sub> I<sub>B</sub>
C. I<sub>C</sub> = h<sub>fe</sub> I<sub>B</sub>
D. I<sub>C</sub> = -h<sub>fe</sub> I<sub>B</sub>
Answer» D. I<sub>C</sub> = -h<sub>fe</sub> I<sub>B</sub>
Discussion
10.

What is the value of input resistance in the simplified CE hybrid model?

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