Moderate

In a series resonant band-pass filter, a lower value of Q results in______________?

Correct answer: D. a larger bandwidth

  • A. a higher impedance
  • B. a smaller bandwidth
  • C. a higher resonant frequency
  • D. a larger bandwidth

Explanation

For a resonant filter, Q = fr/BW, so bandwidth is inversely proportional to Q. A lower Q therefore produces a larger bandwidth and poorer selectivity.

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