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 hybrid-pi CE transistor model to obtain approximate values.

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

What is the value of overall voltage gain in the hybrid-pi CE transistor 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 hybrid-pi CE transistor 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 hybrid-pi CE transistor 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 hybrid-pi CE transistor 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 hybrid-pi CE transistor 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 hybrid-pi CE transistor 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 hybrid-pi CE transistor 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 hybrid-pi CE transistor 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 hybrid-pi CE transistor model?

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