Electronics and Communication Engineering - Analog Electronics

6. 

In each of circuits below, indicate which diode is conducting?

A. Figure A
B. Figure B
C. Figure C
D. All the three

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

7. 

A dc amplifier can operate

A. at zero frequency
B. only at low frequency
C. only at high frequencies
D. both at low and high frequencies

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

8. 

Assertion (A): In a common source amplifier with source terminal at ac ground the voltage gain is about gm rd

Reason (R): A common source amplifier is a source follower circuit

A. Both A and R are correct and R is correct explanation for A
B. Both A and R are correct but R is not correct explanation for A
C. A is correct R is wrong
D. A is wrong R is correct

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

9. 

Thermal runaway will take place if the quiescent point is such that

A. VCE >
B. VCE < VCC
C. VCE < 2VCC
D. VCE <

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

10. 

In applications where __________ input resistance is needed, the JFET is preferred to the bipolar transistor.

A. zero
B. very low
C. low
D. high

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.