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Home Electronics RLC Circuits and Resonance Comments

  • Question
  • What effect will a parallel tank have upon final filter current?


  • Options
  • A. very little
  • B. The bandpass frequencies will change.
  • C. The frequency cutoff will change.
  • D. The impedance will block output.

  • Correct Answer
  • very little 


  • RLC Circuits and Resonance problems


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    • 1. When a full band of frequencies is allowed to pass through a filter circuit to the output, the resonant circuit is called a:

    • Options
    • A. low-pass filter
    • B. high-pass filter
    • C. band-stop filter
    • D. bandpass filter
    • Discuss
    • 2. Which statement best describes reactance in a series RLC circuit?

    • Options
    • A. Capacitive reactance is always dominant.
    • B. Inductive reactance is always dominant.
    • C. Resistance is always dominant.
    • D. The larger of the two reactances is dominant.
    • Discuss
    • 3. What is the range between f1 and f2 of an RLC circuit that resonates at 150 kHz and has a Q of 30?

    • Options
    • A. 100.0 kHz to 155.0 kHz
    • B. 147.5 kHz to 152.5 kHz
    • C. 4500 kHz to 295.5 kHz
    • D. 149,970 Hz to 150,030 Hz
    • Discuss
    • 4. 

      What is the bandwidth in the given circuit. If the winding resistance of the coil is 12 Ω?


    • Options
    • A. 6.4 kHz
    • B. 47.2 kHz
    • C. 53.7 kHz
    • D. 60.2 kHz
    • Discuss
    • 5. What is the impedance of the circuit?


    • Options
    • A. 12.2 kΩ
    • B. 14.5 kΩ
    • C. 17.8 kΩ
    • D. 20.3 kΩ
    • Discuss
    • 6. Series RLC impedance or voltage totals must always be calculated by

    • Options
    • A. adding values vectorially
    • B. graphing the angles
    • C. multiplying the values
    • D. subtracting the values
    • Discuss
    • 7. 

      What is the impedance of the circuit in the given circuit?


    • Options
    • A. 125.7 Ω
    • B. 297.6 Ω
    • C. 370.1 Ω
    • D. 423.3 Ω
    • Discuss
    • 8. What is the resonance frequency?


    • Options
    • A. 31.8 Hz
    • B. 71 Hz
    • C. 7.1 kHz
    • D. 31.8 kHz
    • Discuss
    • 9. 

      What is the total current for the nonideal circuit in the given circuit. If it is at resonance?


    • Options
    • A. 0 A
    • B. 284 µ A
    • C. 3.3 mA
    • D. 38.5 mA
    • Discuss
    • 10. Voltage lags current in an RLC circuit when it acts:

    • Options
    • A. capacitively
    • B. resistively
    • C. inductively
    • D. resonantly
    • Discuss


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