Electronic Devices - BJT Amplifiers

Exercise :: BJT Amplifiers - General Questions

31. 

Under which of the following condition(s) is the current gain ?

A. ro 10RC
B. RB 10re
C. ro 10RC and RB 10re
D. None of the above

Answer: Option C

Explanation:

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

32. 

The ________ configuration is frequently used for impedance matching.

A. fixed-bias
B. voltage-divider bias
C. emitter-follower
D. collector feedback

Answer: Option C

Explanation:

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

33. 

Refer to this figure. You notice while servicing this amplifier that the output signal at Vout is reduced from normal. The problem could be caused by

A. an open C3.
B. an open C2.
C. an open base-emitter of Q2.
D. a shorted C2.

Answer: Option B

Explanation:

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

34. 

When the bypass capacitor is removed from a common-emitter amplifier, the voltage gain

A. increases.
B. decreases.
C. has very little effect.

Answer: Option B

Explanation:

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

35. 

Refer to this figure. Determine the value of VC.

A. 20 V
B. 10 V
C. 5 V
D. 0 V

Answer: Option C

Explanation:

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