WorksheetsActive Filters Quiz
Total questions: 25
Worksheet time: 13mins
The critical frequency is defined as the point at which the response drops _________ from the passband.
-20 dB
-3 dB
-6 dB
-40 dB
Which filter exhibits a linear phase characteristic?
Bessel
Butterworth
Chebyshev
all of the above
Which filter has a maximally flat response?
Bessel
Butterworth
Chebyshev
all of the above
Which filter exhibits the most rapid roll-off rate?
Bessel
Butterworth
Chebyshev
all of the above
A third-order filter will have a roll-off rate of
-20 dB/decade.
-40 dB/decade.
-60 dB/decade.
-30 dB/decade.
Refer to the figure below. Identify the frequency response curve for a band-reject filter.
a
b
c
d
Refer to the figure below. Identify the frequency response curve for a low-pass filter.
a
b
c
d
Refer to the figure below. Identify the frequency response curve for a high-pass filter.
a
b
c
d
Refer to the figure below. Identify the frequency response curve for a band-pass filter.
a
b
c
d
Refer to the figure below. This is a _____ filter, and it has a cutoff frequency of _____.
high-pass, 21 Hz
low-pass, 21 Hz
high-pass, 2.65 kHz
low-pass, 2.65 kHz
Refer to the figure below. The cutoff frequency of this filter is _____, and the circuit is known as a _____.
721 Hz, low-pass filter
721 Hz, high-pass filter
72 Hz, low-pass filter
721 Hz, band-pass filter
Refer to the figure below. It is a _____ filter.
band-pass
band-stop
high-pass
low-pass
Refer to the figure below. This circuit is known as a _____ filter, and the fc is _____.
high-pass, 1.59 kHz
band-pass, 15.9 kHz
low-pass, 15.9 kHz
high-pass, 15.9 kHz
Refer to the figure below. Let RA = 2.2 k and RB = 1.2 k. This filter is probably a
Butterworth type.
Bessel type.
Chebyshev type.
Refer to the figure below. The roll-off of this filter is about
20 dB/decade.
40 dB/decade.
60 dB/decade.
80 dB/decade.
Refer to the figure below. The roll-off rate of the circuit shown is about
20 dB/decade.
40 dB/decade.
60 dB/decade.
80 dB/decade.
A low-pass filter has a cutoff frequency of 1.23 kHz. Determine the bandwidth of the filter.
2.46 kHz
1.23 kHz
644 Hz
not enough information given
Refer to the figure below. This is a _____ filter.
low-pass
high-pass
band-pass
band-stop
Refer to the figure below. This filter has a roll-off rate of
20 dB/decade.
40 dB/decade.
60 dB/decade.
80 dB/decade.
Refer to the figure below. Increasing the values of the filter section resistors in this circuit will cause the fc to
increase.
decrease.
remain the same.
increase and then decrease.
A _____ filter significantly attenuates all frequencies below fc and passes all frequencies above fc.
low-pass
high-pass
band-pass
band-stop
A _____ filter passes all frequencies within a band between a lower and an upper critical frequency and rejects all others outside this band.
low-pass
high-pass
band-pass
band-stop
A _____ filter rejects all frequencies within a specified band and passes all those outside this band.
low-pass
high-pass
band-pass
band-stop
Filters with the _____ characteristic provide a very flat amplitude in the passband and a roll-off rate of -20 dB/decade/pole.
Butterworth
Chebyshev
Bessel
Filters with the _____ characteristic are used for filtering pulse waveforms.
Butterworth
Chebyshev
Bessel
