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  • Question
  • Which of the following represents a true equivalent of an inductor?


  • Options
  • A. An inductance in series with a resistance and a capacitance
  • B. A capacitance in parallel with the series combination of a resistance and an inductance
  • C. An inductance in parallel with the series combination of a resistance and a capacitance
  • D. The only quality a real inductor has is inductance.

  • Correct Answer
  • A capacitance in parallel with the series combination of a resistance and an inductance 


  • Inductors problems


    Search Results


    • 1. A series RL filter circuit with an output across the inductor will result in what type of filtering?

    • Options
    • A. passing of the higher frequencies
    • B. passing of the lower frequencies
    • C. blocking of the higher frequencies
    • D. blocking of a certain range of frequencies
    • Discuss
    • 2. What is the permeability of transformer iron?

    • Options
    • A. 50
    • B. 450
    • C. 1,500
    • D. 5,500
    • Discuss
    • 3. Opposition to current flow without the dissipation of energy is called:

    • Options
    • A. resistance
    • B. inductive reactance
    • C. counter emf
    • D. impedance
    • Discuss
    • 4. Which of the following is NOT one of the three major types of fixed inductor?

    • Options
    • A. air core
    • B. ferrite core
    • C. magnesium core
    • D. iron core
    • Discuss
    • 5. With 100 Vac applied to the primary of a transformer so that it draws 500 mA, what will be the 300 Vac secondary current?

    • Options
    • A. 1500 mA
    • B. 200 mA
    • C. 167 mA
    • D. 150 mA
    • Discuss
    • 6. What is magnetic flux?

    • Options
    • A. the number of lines of force in webers
    • B. the number of lines of force in maxwells
    • C. the number of lines of force in teslas
    • D. the number of lines of force in flux density
    • Discuss
    • 7. What is the total inductance, assuming no mutual inductance?


    • Options
    • A. 12 mH
    • B. 6 mH
    • C. 0.73 mH
    • D. 0 mH
    • Discuss
    • 8. When a rate of one ampere per second causes an induced voltage of one volt, the unit of measure is

    • Options
    • A. a lenz
    • B. an ohm
    • C. a farad
    • D. a henry
    • Discuss
    • 9. A magnetic field has:

    • Options
    • A. polar fields
    • B. lines of force
    • C. magnetomotive force
    • D. lines of reluctance
    • Discuss
    • 10. If 360 Vac is the output of a 300-turn secondary winding, what is the input voltage when the primary winding has 150 turns?

    • Options
    • A. 2.4 Vac
    • B. 150 Vac
    • C. 180 Vac
    • D. 720 Vac
    • Discuss


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