46. The roll-off for a first-order high-pass filter is ________.
(a) –20 dB/decade
(b) –6 dB/octave
(c) either –20 dB/decade or –6 dB/octave
(d) None of the above
47. When a number of stages are connected in series, the overall gain is the ________ of the individual stage gains.
(a) sum
(b) product
(c) difference
(d) average
48. The input to an op-amp can be a(n) ________.
(a) dc source
(b) ac source
(c) combination of ac and dc sources
(d) All of the above
49. A voltage summing amplifier has ________.
(a) several inputs and several outputs
(b) several inputs and one output
(c) one input and several outputs
(d) one input and one output
50. ________ build a multistage connection.
(a) Only an inverting op-amp circuit must be used to
(b) Only a noninverting op-amp circuit must be used to
(c) Both inverting and noninverting op-amp circuits can be used to
(d) Neither inverting nor noninverting op-amp circuits must be used to
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