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A band-pass filter has a bandwidth of 250Hz and center frequency of 866Hz. Find the quality factor of the filter?a.6.42b.3.46c.4.84d.None of these

Question

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Solution

Break Down the Problem

  1. Identify the parameters given for the band-pass filter:
    • Bandwidth (BW) = 250 Hz
    • Center Frequency (f₀) = 866 Hz

Relevant Concepts

  1. The quality factor (Q) for a band-pass filter can be calculated using the formula: Q=f0BW Q = \frac{f₀}{BW} where f0 f₀ is the center frequency and BW BW is the bandwidth.

Analysis and Detail

  1. Substitute the given values into the formula: Q=866Hz250Hz Q = \frac{866 \, \text{Hz}}{250 \, \text{Hz}} Performing the division: Q=3.464 Q = 3.464

Verify and Summarize

  1. Rounding the value obtained gives us:
    • Q3.46 Q \approx 3.46

Final Answer

The quality factor of the filter is approximately 3.46 3.46 . Thus, the correct answer is b. 3.46.

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