Question 1

A multiple- feedback band- pass filter

Accepted Answer

A)  uses a minimum of two op- amps.
B)  is used for a narrow band high Q) filter.
C)  is also known as a Sallen- Key filter.
D)  is used for a wide band low Q) filter.E) B) and C)
F) None of the above

Question 2

-Refer to the figure above. The low- pass filter with a 20 dB/decade roll- off is

Accepted Answer

A)  a) .
B)  b) .
C)  c) .
D)  None of the above.E) B) and D)
F) A) and C)

Question 3

A low- pass filter has a cutoff frequency of 1.23 kHz. Determine the bandwidth of the filter.

Accepted Answer

A)  644 Hz
B)  2.46 kHz
C)  1.23 kHz
D)  Not enough information is given.E) A) and B)
F) A) and C)

Question 4

The filter response characteristic that distorts pulses the least is the

Accepted Answer

A)  Chebyshev.
B)  Bessel.
C)  Elliptic.
D)  Butterworth.E) All of the above
F) None of the above

Question 5

-Refer to the figure above. This circuit is known as a _____and the roll- off rate is _______.

Accepted Answer

A)  high- pass filter, 20 dB/decade
B)  band- pass filter, 80 dB/decade
C)  low- pass filter, 60 dB/decade
D)  high- pass filter, 80 dB/decadeE) All of the above
F) B) and C)

Question 6

A pole is a network that contains

Accepted Answer

A)  a resistor and an inductor.
B)  a resistor and a capacitor.
C)  a capacitor and an inductor.
D)  two resistors and one inductor.E) B) and C)
F) All of the above

Question 7

If a Butterworth filter has 9 second- order stages, its rolloff rate is

Accepted Answer

A)  180 dB per decade.
B)  360 dB per decade.
C)  20 dB per decade.
D)  40 dB per decade.E) B) and C)
F) None of the above

Question 8

Band- pass filters are designed to pass a band of frequencies between

Accepted Answer

A)  1 kHz and 10 MHz.
B)  fc1 and fc2.
C)  1 kHz and 10 kHz.
D)  a band- start and band- stop.E) A) and B)
F) None of the above

Question 9

-Refer to the figure above. Identify the active single- pole high- pass filter.

Accepted Answer

A)  a) 
B)  b) 
C)  c) 
D)  d) E) All of the above
F) A) and D)

Question 10

A single RC circuit produces a roll- off rate of

Accepted Answer

A)  - 20 dB/decade.
B)  - 6 dB/octave.
C)  - 40 dB/decade.
D)  A and B above.E) A) and B)
F) None of the above

Question 11

A maximally flat frequency response is a common name for

Accepted Answer

A)  Colpitts.
B)  Butterworth.
C)  Bessel.
D)  Chebyshev.E) A) and D)
F) A) and C)

Question 12

-Refer to the figure above. The low- pass filter with a roll- off of 40 dB/decade is

Accepted Answer

A)  a) .
B)  b) .
C)  c) .
D)  d) .E) C) and D)
F) All of the above

Question 13

Sallen- Key filters are also called

Accepted Answer

A)  VCVS filters.
B)  biquadratic filters.
C)  state- variable filters.
D)  multiple feedback filters.E) B) and C)
F) C) and D)

Question 14

A notch filter is an)

Accepted Answer

A)  all- pass filter.
B)  band- stop circuit.
C)  band- pass circuit.
D)  time- delay circuit.E) All of the above
F) None of the above

Exam 15: Active Filters

A maximally flat frequency response is a common name for

Correct Answer
verified

-Refer to the figure above. Identify the active single- pole high- pass filter.

Correct Answer
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A low- pass filter has a cutoff frequency of 1.23 kHz. Determine the bandwidth of the filter.

Correct Answer
verified

-Refer to the figure above. This circuit is known as a _and the roll- off rate is ___.

Correct Answer
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A single RC circuit produces a roll- off rate of

Correct Answer
verified

A multiple- feedback band- pass filter

Correct Answer
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The filter response characteristic that distorts pulses the least is the

Correct Answer
verified

A notch filter is an)

Correct Answer
verified

Band- pass filters are designed to pass a band of frequencies between

Correct Answer
verified

-Refer to the figure above. The low- pass filter with a 20 dB/decade roll- off is

Correct Answer
verified

-Refer to the figure above. The low- pass filter with a roll- off of 40 dB/decade is

Correct Answer
verified

A pole is a network that contains

Correct Answer
verified

If a Butterworth filter has 9 second- order stages, its rolloff rate is

Correct Answer
verified

Sallen- Key filters are also called

Correct Answer
verified

Exam 15: Active Filters

A maximally flat frequency response is a common name for

Correct AnswerverifiedShow Answer

-Refer to the figure above. Identify the active single- pole high- pass filter.

Correct AnswerverifiedShow Answer

A low- pass filter has a cutoff frequency of 1.23 kHz. Determine the bandwidth of the filter.

Correct AnswerverifiedShow Answer

-Refer to the figure above. This circuit is known as a _____and the roll- off rate is _______.

Correct AnswerverifiedShow Answer

A single RC circuit produces a roll- off rate of

Correct AnswerverifiedShow Answer

A multiple- feedback band- pass filter

Correct AnswerverifiedShow Answer

The filter response characteristic that distorts pulses the least is the

Correct AnswerverifiedShow Answer

A notch filter is an)

Correct AnswerverifiedShow Answer

Band- pass filters are designed to pass a band of frequencies between

Correct AnswerverifiedShow Answer

-Refer to the figure above. The low- pass filter with a 20 dB/decade roll- off is

Correct AnswerverifiedShow Answer

-Refer to the figure above. The low- pass filter with a roll- off of 40 dB/decade is

Correct AnswerverifiedShow Answer

A pole is a network that contains

Correct AnswerverifiedShow Answer

If a Butterworth filter has 9 second- order stages, its rolloff rate is

Correct AnswerverifiedShow Answer

Sallen- Key filters are also called

Correct AnswerverifiedShow Answer

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-Refer to the figure above. This circuit is known as a _and the roll- off rate is ___.

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