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.

There is no collector resistance in a simplified CC amplifier configuration.

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

What is the approximate value of the voltage gain of a simplified CC amplifier configuration?

A. 1
B.
C.
D. 0
Answer» B.
Discussion
3.

What is the voltage gain of a simplified CC configuration amplifier if RE = 25k and re = 12k ?

A. 0.68
B. 0.59
C. 0.48
D. 0.086
Answer» B. 0.59
Discussion
4.

How do we compute the output impedance of a simplified CC amplifier?

A. R<sub>E</sub> || (r<sub>e</sub> (R<sub>1</sub> || R<sub>2</sub>) / ( + 1))
B. R<sub>E</sub> || (r<sub>e</sub> (R<sub>1</sub> || R<sub>2</sub>) / ( 1))
C. R<sub>E</sub> || (r<sub>e</sub> + (R<sub>1</sub> || R<sub>2</sub>) / ( + 1))
D. R<sub>E</sub> || (r<sub>e</sub> + (R<sub>1</sub> || R<sub>2</sub>) / ( 1))
Answer» D. R<sub>E</sub> || (r<sub>e</sub> + (R<sub>1</sub> || R<sub>2</sub>) / ( 1))
Discussion
5.

How do we compute the input impedance of a simplified CC amplifier?

A. (R<sub>e</sub> r<sub>e</sub> )
B. (R<sub>e</sub> + r<sub>e</sub> )
C. R<sub>B</sub> || (R<sub>e</sub> r<sub>e</sub> )
D. R<sub>B</sub> || (R<sub>e</sub> + r<sub>e</sub> )
Answer» E.
Discussion
6.

How do we compute the base impedance of a simplified CC amplifier?

A. (R<sub>e</sub> r<sub>e</sub> )
B. (R<sub>e</sub> + r<sub>e</sub> )
C. R<sub>B</sub> || (R<sub>e</sub> r<sub>e</sub> )
D. R<sub>B</sub> || (R<sub>e</sub> + r<sub>e</sub> )
Answer» C. R<sub>B</sub> || (R<sub>e</sub> r<sub>e</sub> )
Discussion
7.

What is the value of voltage VB of a CC amplifier configuration if VCC = 12V, R1 = 5k and R2 = 8k ?

A. 6.54V
B. 0.7V
C. 4.6V
D. 7.38V
Answer» E.
Discussion
8.

How do we compute the voltage gain of a simplified CC amplifier model using hybrid parameters?

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
9.

How do we compute the input resistance of a simplified CC amplifier model using hybrid parameters?

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
10.

How do we computethe current gain of a simplified CC amplifier model using hybrid parameters?

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