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  • Question

  • ___ power represents the energy dissipated at a given point in time.


  • Options
  • A. True
  • B. Reactive
  • C. Real
  • D. Instantaneous

  • Correct Answer
  • Instantaneous 

    • Inductors problems

    Search Results

    • 1. 

      The total inductive reactance is ___ in the given circuit.


    • Options
    • A. 3.5 kΩ
    • B. 4.4 kΩ
    • C. 16.3 kΩ
    • D. 23.3 kΩ
      • Discuss
    • 2. Inductive ___ represents the opposition to an alternating current.

    • Options
    • A. impedance
    • B. resistance
    • C. reluctance
    • D. reactance
      • Discuss
    • 3. After the first time constant, a transient current has changed by _______________ %, leaving _______________ % remaining.

    • Options
    • A. 63.2, 36.8
    • B. 36.8, 63.2
    • C. 13.5, 86.5
    • D. 86.5, 13.5
      • Discuss
    • 4. 

      The inductance value of L3 in the given figure is _____ if the total inductance is 340 mH.


    • Options
    • A. 150 mH
    • B. 220 mH
    • C. 295 mH
    • D. 315 mH
      • Discuss
    • 5. The ___ cannot change instantaneously in an inductor.

    • Options
    • A. voltage
    • B. current
    • C. power
    • D. magnetic field
      • Discuss
    • 6. 

      The inductive reactance of L2 is _____ in the given circuit.


    • Options
    • A. 3.5 kΩ
    • B. 4.4 kΩ
    • C. 16.3 kΩ
    • D. 23.3 kΩ
      • Discuss
    • 7. Electromagnetic induction is the generation of _________ from __________.

    • Options
    • A. magnetism, electricity
    • B. electricity, electricity
    • C. electricity, magnetism
    • D. magnetism, magnetism
      • Discuss
    • 8. The opposition to ac by an inductor is directly proportional to ___.

    • Options
    • A. resistance
    • B. reactance
    • C. frequency
    • D. voltage
      • Discuss
    • 9. When current flow tries to decrease in an inductor, the magnetic field _______________ and the voltage polarity across the inductor _______________.

    • Options
    • A. collapses, remains the same
    • B. expands, reverses
    • C. collapses, reverses
    • D. expands, remains the same
      • Discuss
    • 10. After a voltage has been applied to an inductor, the current will be ___ of its full value after 2 time constants.

    • Options
    • A. 63%
    • B. 86%
    • C. 95%
    • D. 98%
      • Discuss

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