Electronics and Communication Engineering - Analog Electronics

6. 

In CE amplifier

A. input and output are in phase
B. phase difference between input and output is 30° to 90°
C. phase difference between input and output is 60° to 120°
D. output is inverted with respect to its input voltage

Answer: Option D

Explanation:

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

7. 

The approximate value of input impedance of a common emitter amplifier with emitter resistance Re is given by

A. hie + AI Re
B. hie + (i + hfe) Re
C. hie
D. (1 + hfe) Re

Answer: Option B

Explanation:

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

8. 

The collector voltage VC of the circuit shown in the given figure aside is approximately

A. 2 V
B. 4.6 V
C. 8 V
D. 8.6 V

Answer: Option B

Explanation:

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

9. 

The symbol shown in figure represents a

A. P-channel MOSFET
B. UJT with N-type base
C. N-channel DEMOSFET with internal zener protection
D. P-channel DEMOSFET with internal zener protection

Answer: Option C

Explanation:

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

10. 

The phase angle of a lag circuit is

A. between 0 and -90°
B. between 0 and +90°
C. 90°
D. more than 90°

Answer: Option B

Explanation:

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