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  • Question

  • In a certain low-pass filter, fc = 3.5 kHz. Its passband is


  • Options
  • A. 0 Hz to 3.5 kHz
  • B. 0 Hz
  • C. 3.5 kHz
  • D. 7 kHz

  • Correct Answer
  • 0 Hz to 3.5 kHz 

    • Passive Filters problems

    Search Results

    • 1. A series resonant band-stop filter consists of a 68 Ω resistor, a 110 mH coil, and a 0.02 µF capacitor. The internal resistance, RW, of the coil is 4 Ω. Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0?

    • Options
    • A. 1.1 mV
    • B. 11.1 mV
    • C. 111 mV
    • D. 200 mV
      • Discuss
    • 2. A series resonant band-pass filter consists of a 2 mH coil, a 0.005 µF capacitor, and a 120 Ω resistor. The winding resistance of the coil is 12 Ω. The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (f0)?

    • Options
    • A. 10.9 V
    • B. 1.09 V
    • C. 1.1 V
    • D. 12 V
      • Discuss
    • 3. Referring to Problem 23, what will the output voltage be if the coil's internal resistance is neglected?

    • Options
    • A. 0 V
    • B. 200 mV
    • C. 11.1 mV
    • D. 111 mV
      • Discuss
    • 4. An RC high-pass filter consists of a 0.2 µF capacitor and a 220 Ω resistor. The output is taken across the resistor. The circuit's critical frequency is

    • Options
    • A. 723 Hz
    • B. 7,234 Hz
    • C. 362 Hz
    • D. 3,617 Hz
      • Discuss
    • 5. In a certain parallel resonant band-pass filter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency

    • Options
    • A. is 7 kHz
    • B. is 10 kHz
    • C. is 12 kHz
    • D. cannot be determined
      • Discuss
    • 6. A parallel resonant band-pass filter consists of a 6.8 Ω resistor in series with a parallel network made up of an 8 µH coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 Ω. What is the center frequency of the filter?

    • Options
    • A. 5.14 MHz
    • B. 514 kHz
    • C. 5.03 MHz
    • D. 503 kHz
      • Discuss
    • 7. Referring to Problem 8, assume the input voltage is 15 V ac. What is the output voltage at the critical frequency,fc?

    • Options
    • A. 0 V
    • B. 7.07 V
    • C. 15 V
    • D. 10.6 V
      • Discuss
    • 8. Referring to Problem 21, the filter's bandwidth is

    • Options
    • A. 11.5 Hz
    • B. 530 Hz
    • C. 53 Hz
    • D. 106 Hz
      • Discuss
    • 9. A parallel resonant band-pass filter consists of a 90 Ω resistor in series with a parallel network made up of a 60 mH coil and a 0.02 µF capacitor. The output is taken across the capacitor/coil. The coil winding has a resistance of 20 Ω. What is the center frequency of the filter?

    • Options
    • A. 459 Hz
    • B. 4,591 Hz
    • C. 999 Hz
    • D. 2,176 Hz
      • Discuss
    • 10. An RL low-pass filter consists of a 5.6 mH coil and a 3.3 kΩ resistor. The output voltage is taken across the resistor. The circuit's critical frequency is

    • Options
    • A. 93.8 kHz
    • B. 93.8 Hz
    • C. 861 Hz
    • D. 86.12 kHz
      • Discuss

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