Electronic Devices

Question: One important application of a state-variable ________ filter with a summing amplifier is to minimize the 60 Hz “hum” in audio systems.
[A].

low-pass

[B].

high-pass

[C].

band-pass

[D].

band-stop

Answer: Option D

Explanation:

No answer description available for this question.

Question: Filters with the ________ characteristic are used for filtering pulse waveforms.
[A].

Butterworth

[B].

Chebyshev

[C].

Bessel

Answer: Option C

Explanation:

No answer description available for this question.

Question: Filters with the ________ characteristic are useful when a rapid roll-off is required because it provides a roll-off rate greater than –20/dB/decade/pole.
[A].

Butterworth

[B].

Chebyshev

[C].

Bessel

Answer: Option B

Explanation:

No answer description available for this question.

Question: Filters with the ________ characteristic provide a very flat amplitude in the passband and a roll-off rate of –20 dB/decade/pole.
[A].

Butterworth

[B].

Chebyshev

[C].

Bessel

Answer: Option A

Explanation:

No answer description available for this question.

Question: A ________ filter rejects all frequencies within a specified band and passes all those outside this band.
[A].

low-pass

[B].

high-pass

[C].

band-pass

[D].

band-stop

Answer: Option D

Explanation:

No answer description available for this question.

Question: A ________ filter passes all frequencies within a band between a lower and an upper critical frequency and rejects all others outside this band.
[A].

low-pass

[B].

high-pass

[C].

band-pass

[D].

band-stop

Answer: Option C

Explanation:

No answer description available for this question.

Question: A ________ filter significantly attenuates all frequencies below fc and passes all frequencies above fc.
[A].

low-pass

[B].

high-pass

[C].

band-pass

[D].

band-stop

Answer: Option B

Explanation:

No answer description available for this question.

Question: The bandwidth in a ________ filter equals the critical frequency.
[A].

low-pass

[B].

high-pass

[C].

band-pass

[D].

band-stop

Answer: Option A

Explanation:

No answer description available for this question.

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

2.46 kHz

[B].

1.23 kHz

[C].

644 Hz

[D].

not enough information given

Answer: Option B

Explanation:

No answer description available for this question.

Question: Identify the frequency response curve for a band-pass filter.

[A].

a

[B].

b

[C].

c

[D].

d

Answer: Option A

Explanation:

No answer description available for this question.