Amplifier Frequency Response - General Questions (3)

Directions to Solve

Amplifier Frequency Response - General Questions

17.

Refer to this figure. The capacitor C₃ affects

mcq10_1011_1 (1)

A.	high-frequency response.
B.	low-frequency response.
C.	midrange response.
D.	nothing

Answer: Option B

Explanation:

No answer description available for this question

18.

The lower critical frequency is also known as the

A.	break frequency.
B.	cutoff frequency.
C.	corner frequency.
D.	all of the above

Answer: Option D

Explanation:

No answer description available for this question

19.

An amplifier has an input signal voltage of 0.054 mV. The output voltage is 12.5 V. The voltage gain in dB is

A.	53.6 dB.
B.	107.3 dB.
C.	231 dB.
D.	116 dB.

Answer: Option B

Explanation:

No answer description available for this question.

20.

What is the method that can be used to determine the values of f_cl and f_cu of an amplifier?

A.	five time constants
B.	step-response
C.	sinusoidal

Answer: Option B

Explanation:

No answer description available for this question

21.

Internal transistor junction capacitances affect the high-frequency response of amplifiers by

A.	reducing the amplifier's gain.
B.	introducing phase shift as the signal frequency increases.
C.	having no effect.
D.	reducing the amplifier's gain and introducing phase shift as the signal frequency increases.

Answer: Option D

Explanation:

No answer description available for this question.

22.

A certain amplifier has a bandwidth of 22.5 kHz with a lower cutoff frequency of 600 Hz. What is the value of f_cu?

A.	600 Hz
B.	22.5 kHz
C.	23.1 kHz
D.	21.9 kHz

Answer: Option C

Explanation:

No answer description available for this question

23.

The phase shift through the input of an RC circuit approaches ________° as the frequency approaches zero.

A.	0
B.	45
C.	180
D.	90

Answer: Option D

Explanation:

No answer description available for this question

24.

Each RC circuit causes the gain to drop at a rate of ________ dB/decade.

A.	20
B.	10
C.	6
D.	none of the above

Answer: Option A

Explanation:

No answer description available for this question

Amplifier Frequency Response - General Questions (3)

Amplifier Frequency Response - General Questions

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