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Home ‣ Electrical Engineering ‣ Capacitors Comments
  • Question

  • XC is inversely proportional to frequency and capacitance.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • Capacitors problems

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    • 1. Energy is stored by a capacitor in a magnetic field.

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    • A. True
    • B. False
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    • 2. The true power in a capacitor is zero.

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    • A. True
    • B. False
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    • 3. A capacitor blocks ac but passes dc.

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    • A. True
    • B. False
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    • 4. Capacitance is directly proportional to plate area and plate separation.

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    • A. True
    • B. False
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    • 5. The ohm is the unit of capacitance.

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    • A. True
    • B. False
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    • 6. Five time constants are required for a capacitor to charge fully or discharge fully.

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    • A. True
    • B. False
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    • 7. A transformer consists of two or more cores that are electrically coupled on a common core.

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    • A. True
    • B. False
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    • 8. An autotransformer is one in which the primary and secondary are automatically coupled.

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    • A. True
    • B. False
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    • 9. A reflective load is a load as it appears to the source in the primary of a transformer.

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    • A. True
    • B. False
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    • 10. A transformer responds only to dc.

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    • A. True
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    Comments

    Avatar
    win min tun
    Xc = 1/() so Xc is inversely propotional Capacitance
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