Amplifier Frequency Response - General Questions (2)

Directions to Solve

Amplifier Frequency Response - General Questions

9.

Refer to this figure. You measure an output voltage at the lower cutoff frequency of 3.42 V p-p. The output voltage at the upper cutoff frequency will be

mcq10_1011_1 (3)

A.	2.42 V p-p.
B.	3.42 V p-p.
C.	6.84 V p-p.
D.	6.84 Vrms.

Answer: Option B

Explanation:

No answer description available for this question.

10.

Refer to this figure. The capacitor C_be affects

mcq10_1011_1 (2)

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

Answer: Option A

Explanation:

No answer description available for this question

11.

The frequency response of an amplifier can be determined using the step response method, and measuring the output rise/fall times between

A.	0% and 100% response.
B.	10% and 90% response.
C.	25% and 75% response.
D.	five time constant responses.

Answer: Option B

Explanation:

No answer description available for this question

12.

An amplifier has an output voltage of 7.6 V p-p at the midpoint of the frequency range. What is the output at f_c?

A.	3.8 V p-p
B.	3.8 Vrms
C.	5.4 Vrms
D.	5.4 V p-p

Answer: Option D

Explanation:

No answer description available for this question

13.

A ten-times change in frequency is called a(n)

A.	octave.
B.	decade.
C.	decimal.
D.	none of the above

Answer: Option B

Explanation:

No answer description available for this question

14.

For low-frequency response, all RC circuits in an amplifier may not have the same critical frequency. Which RC response will determine the critical frequency of the amplifier?

A.	the lowest frequency
B.	the center frequency
C.	the highest frequency
D.	the bypass frequency

Answer: Option C

Explanation:

No answer description available for this question

15.

It is often convenient in amplifiers to assign a certain value of gain as the ________ dB reference.

A.	0
B.	1
C.	6
D.	10
E.	20

Answer: Option A

Explanation:

No answer description available for this question

16.

An RC network has a roll-off of 20 dB per decade. What is the total attenuation between the output voltage in the midrange of the passband as compared to the output voltage at a frequency of 10 times f_c?

A.	–3 dB
B.	–20 dB
C.	–23 dB
D.	–43 dB

Answer: Option B

Explanation:

No answer description available for this question

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