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Home ‣ Electrical Engineering ‣ Passive Filters See What Others Are Saying!
  • Question

  • An RL high-pass filter consists of a 470 Ω resistor and a 600 mH coil. The output is taken across the coil. The circuit's critical frequency is


  • Options
  • A. 125 Hz
  • B. 1,250 Hz
  • C. 564 Hz
  • D. 5,644 Hz

  • Correct Answer
  • 125 Hz 

    • More questions

    • 1. The primary winding of a power transformer should always be

    • Options
    • A. open
    • B. shorted
    • C. switched
    • D. fused
      • Discuss
    • 2. What is the flux density when the flux is 5.5 µWb and the cross-sectional area is 6 × 10?3 m2?

    • Options
    • A. 91.7 µT
    • B. 917 µT
    • C. 91 T
    • D. 9.7 T
      • Discuss
    • 3. Two 6 V batteries are connected series aiding across two 1.2 kΩ resistors in series. Current through each resistor is

    • Options
    • A. 5 mA
    • B. 10 mA
    • C. 0 A
    • D. 2.5 mA
      • Discuss
    • 4. The number 0.0003 multiplied by 10-3 is

    • Options
    • A. 0.0000003
    • B. 0.0003
    • C. 3
    • D. 3,000
      • Discuss
    • 5. A multimeter measures

    • Options
    • A. current
    • B. voltage
    • C. resistance
    • D. current, voltage, and resistance
      • Discuss
    • 6. Eighteen thousand watts is the same as

    • Options
    • A. 18 mW
    • B. 18 MW
    • C. 18 kW
    • D. 18 µW
      • Discuss
    • 7. A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately

    • Options
    • A. 14 mA
    • B. 1.4 mA
    • C. 5 mA
    • D. 50 mA
      • Discuss
    • 8. Three 680 Ω resistors are connected in series with a 470 V source. Current in the circuit is

    • Options
    • A. 69 mA
    • B. 230 mA
    • C. 23 mA
    • D. 690 mA
      • Discuss
    • 9. When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is

    • Options
    • A. overheated
    • B. shorted
    • C. open
    • D. reversed
      • Discuss
    • 10. A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?

    • Options
    • A. 73.4 Ω and ? = ?19.5°
    • B. 707 Ω and ? = ?19.5°
    • C. 2121 Ω and ? = ?19.5°
    • D. 734 Ω and ? = ?38.9°
      • Discuss

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