BJT Amplifiers - General Questions (4)

Directions to Solve

BJT Amplifiers - General Questions

25.

The dc emitter current of a transistor is 8 mA. What is the value of r_e?

A.	320
B.	13.3
C.	3.125
D.	5.75

Answer: Option C

Explanation:

No answer description available for this question.

26.

Which of the following define(s) the conversion efficiency?

A.	Ac power to the load/ac input power
B.	Ac power to the load/dc power supplied
C.	Dc output power/ac input power
D.	All of the above

Answer: Option B

Explanation:

No answer description available for this question.

27.

Which of the following gains is less than 1 for a common-base configuration?

A.	Ai
B.	Av
C.	Ap
D.	None of the above

Answer: Option A

Explanation:

No answer description available for this question.

28.

Under which of the following conditions is the output impedance of the network approximately equal to R_C for a common-emitter fixed-bias configuration?

A.	ro 10RC
B.	ro < 10RC
C.	ro < ro
D.	ro > ro

Answer: Option A

Explanation:

No answer description available for this question.

29.

Refer to this figure. If an emitter bypass capacitor was installed, determine the value of R_in(base).

mcq6_1009_1 (1) 1

A.	416
B.	5 k
C.	50
D.	500

Answer: Option A

Explanation:

No answer description available for this question.

30.

For the common-emitter amplifier ac equivalent circuit, all capacitors are

A.	effectively shorts.
B.	effectively open circuits.
C.	not connected to ground.
D.	connected to ground.

Answer: Option A

Explanation:

No answer description available for this question.

31.

To analyze the common-emitter amplifier, what must be done to determine the dc equivalent circuit?

A.	leave circuit unchanged
B.	replace coupling and bypass capacitors with opens
C.	replace coupling and bypass capacitors with shorts
D.	replace VCC with ground

Answer: Option B

Explanation:

No answer description available for this question.

32.

Which of the following is (are) true to achieve a good overall voltage gain for the circuit?

A.	The effect of Rs and RL must be considered as a product.
B.	The effect of Rs and RL must be considered as a product and evaluated individually.
C.	The effect of Rs and RL must be evaluated individually.
D.	None of the above

Answer: Option B

Explanation:

No answer description available for this question.

BJT Amplifiers - General Questions (4)

BJT Amplifiers - General Questions

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