41. The roll-off for a second-order high-pass filter is ________.
(a) either –20 dB per decade or –6 dB per octave
(b) either –40 dB per decade or –12 dB per octave
(c) either –60 dB per decade or –18 dB per octave
(d) None of the above
42. A bandpass filter uses ________ circuit.
(a) a high-pass
(b) a low-pass
(c) a high-pass and a low-pass
(d) neither a low-pass nor a high-pass
43. A low-pass filter ________.
(a) provides a constant output up to the cutoff frequency
(b) passes frequencies from zero up to the cutoff frequency
(c) rejects all frequencies above the cutoff frequency
(d) All of the above
44. An active circuit is composed of a(n) ________.
(a) resistor
(b) capacitor
(c) op-amp
(d) All of the above
45. A filter that passes signals that are above one ideal cutoff frequency and below a second cutoff frequency is called ________.
(a) low-pass
(b) high-pass
(c) bandpass
(d) band reject
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