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

Question: A third-order filter will have a roll-off rate of [A]. –20 dB/decade. [B]. –40 dB/decade. [C]. –60 dB/decade. [D]. –30 dB/decade. Answer: Option C Explanation: No answer description available for this question.

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: 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: 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: Identify the frequency response curve for a high-pass filter. [A]. a [B]. b [C]. c [D]. d Answer: Option B Explanation: No answer description available for this question.