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Passive Filters problems

  • 1. An RC high-pass filter consists of an 820 Ω resistor. What is the value of C so that Xc is ten times less than R at an input frequency of 12 kHz?

  • Options
  • A. 81 µF
  • B. 161 µF
  • C. 0.161 µF
  • D. 220 µF
    • Discuss
  • 2. A sinusoidal voltage with a peak-to-peak value of 18 V is applied to an RC low-pass filter. If the reactance at the input frequency is zero, the output voltage is

  • Options
  • A. 18 V peak-to-peak
  • B. zero
  • C. 9 V peak-to-peak
  • D. 12.74 V peak-to-peak
    • Discuss
  • 3. In an RC low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.

  • Options
  • A. True
  • B. False
    • Discuss
  • 4. In an RL low-pass filter, the output voltage is taken across the inductor and the output lags the input.

  • Options
  • A. True
  • B. False
    • Discuss
  • 5. A band-stop filter passes frequencies between its lower and upper critical frequencies and rejects all others.

  • Options
  • A. True
  • B. False
    • Discuss
  • 6. A band-pass filter rejects all frequencies within a band between a lower and an upper critical frequency and passes all others.

  • Options
  • A. True
  • B. False
    • Discuss
  • 7. The bandwidth of a resonant filter is determined by the quality factor (Q) of the circuit and the resonant frequency.

  • Options
  • A. True
  • B. False
    • Discuss
  • 8. The output voltage is 63.3% of its maximum at the critical frequencies.

  • Options
  • A. True
  • B. False
    • Discuss
  • 9. In an RC high-pass filter, the output is taken across the resistor and the output leads the input.

  • Options
  • A. True
  • B. False
    • Discuss
  • 10. Critical frequencies are also called ?3 dB frequencies.

  • Options
  • A. True
  • B. False
    • Discuss

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