BJT Amplifiers - General Questions (6)

Directions to Solve

BJT Amplifiers - General Questions

41.

The emitter-follower configuration has a ________ impedance at the input and a ________ impedance at the output.

A.	low, low
B.	low, high
C.	high, low
D.	high, high

Answer: Option C

Explanation:

No answer description available for this question.

42.

The differential amplifier has

A.	one input and one output.
B.	two inputs and two outputs.
C.	two inputs and one output.
D.	one input and two outputs.

Answer: Option C

Explanation:

No answer description available for this question.

43.

Which of the following represent(s) the advantage(s) of the system approach over the r-model approach?

A.	Thevenin's theorem can be used.
B.	The effect of changing the load can be determined by a simple equation.
C.	There is no need to go back to the ac equivalent model and analyze the entire network.
D.	All of the above

Answer: Option D

Explanation:

No answer description available for this question.

44.

Which one of the following configurations has the lowest input impedance?

A.	Fixed-bias
B.	Common-base
C.	Emitter-follower
D.	Voltage-divider?

Answer: Option B

Explanation:

No answer description available for this question.

45.

For the common-emitter fixed-bias configuration, there is a ________ phase shift between the input and output signals.

A.	0Âº
B.	45Âº
C.	90Âº
D.	180Âº

Answer: Option D

Explanation:

No answer description available for this question.

46.

What does the negative sign in the voltage gain of the common-emitter fixed-bias configuration indicate?

A.	The output and input voltages are 180Âº out of phase.
B.	Gain is smaller than 1.
C.	Gain is larger than 1.
D.	None of the above

Answer: Option A

Explanation:

No answer description available for this question.

47.

What is the range of the current gain for BJT transistor amplifiers?

A.	less than 1
B.	1 to 100
C.	above 100
D.	All of the above

Answer: Option D

Explanation:

No answer description available for this question.

48.

Refer to this figure. Calculate the value of R_in(tot).

mcq6_1009_1 (3)

A.	37.7 k
B.	3.77 k
C.	378
D.	2.25 k

Answer: Option B

Explanation:

No answer description available for this question.

BJT Amplifiers - General Questions (6)

BJT Amplifiers - General Questions

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