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Home ‣ Electronics ‣ RL Circuits Comments
  • Question

  • As the frequency increases in a series RL circuit the impedance also increases.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • RL Circuits problems

    Search Results

    • 1. Phase angle is the difference in phase between the applied voltage (VS) and the circuit current (IT).

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. In a series RL circuit, a power factor of 0.5 results in less energy conversion to heat than does a power factor of 0.6.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. If a 7.5 kΩ resistance is connected to a 10 kΩ inductive reactance in a series RL circuit, then the impedance equals 12.5 kΩ .

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. For series ac circuits containing both resistance and inductive reactance, total opposition to current can be found by simply adding ohmic values or oppositions to current.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. If Y = 20 mS, then Z = 20.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The phase angle will increase in a parallel RL circuit if the resistance is increased.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. The frequency at which XL = R in an RL circuit is called the _______________.

    • Options
    • A. cutoff frequency
    • B. optimum frequency
    • C. bandwidth characteristic
    • D. resonant frequency
      • Discuss
    • 8. The impedance of a series circuit when R = 15 kΩ and XL = 10 kΩ is approximately equal to ________.

    • Options
    • A. 5 kΩ
    • B. 6 kΩ
    • C. 18 kΩ
    • D. 25 kΩ
      • Discuss
    • 9. 

      If VS increases in the given circuit, then the _____.


    • Options
    • A. impedance increases
    • B. real power decreases
    • C. phase angle increases
    • D. current increases
      • Discuss
    • 10. 

      If the frequency decreases in the given circuit, then _____.


    • Options
    • A. IT decreases
    • B. IR increases
    • C. IL increases
    • D. none of the currents will change
      • Discuss

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