Fluorescent Lamp Parts and Functions Quiz
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Questions and Answers

What is the function of the fluorescent tube in a fluorescent lamp?

  • To produce high voltage to start the lamp
  • To limit the flow of current during operation
  • To preheat the electrodes
  • To contain mercury vapor and inert gas with phosphor coating (correct)

    • What is the function of the ballast in a fluorescent lamp?

  • To limit the flow of current during operation (correct)
  • To preheat the electrodes
  • To contain mercury vapor and inert gas with phosphor coating
  • To produce high voltage to start the lamp

    • Why is a limiting device like a ballast necessary in a fluorescent lamp?

  • To preheat the electrodes to make available a large supply of electrons
  • To provide a surge of relatively large potential to start the arc between the electrodes
  • To prevent the arc current from increasing beyond the limit
  • To protect the lamp from excessive current that could destroy it (correct)

    • What percentage of power consumed by a fluorescent lamp is typically used by the ballast?

    <p>Between 10-20%</p> Signup and view all the answers

    What does the ballast do to prevent the arc current from increasing beyond a certain limit?

    <p>Limits the flow of current during operation</p> Signup and view all the answers

    What is the function of the ballast in a fluorescent lamp?

    <p>It limits the flow of current during the operation of the lamp</p> Signup and view all the answers

    What is the primary purpose of the fluorescent tube in a fluorescent lamp?

    <p>To contain mercury vapor and inert gas with phosphor coating inside</p> Signup and view all the answers

    Why is a limiting device like a ballast necessary in a fluorescent lamp?

    <p>To prevent the arc current from increasing beyond a certain limit</p> Signup and view all the answers

    What percentage of power consumed by a fluorescent lamp is typically used by the ballast?

    <p>10-20%</p> Signup and view all the answers

    What does the ballast do to prevent the arc current from increasing beyond a certain limit?

    <p>It limits the flow of current during the operation of the lamp</p> Signup and view all the answers

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