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Home ‣ Electronics ‣ Diodes and Applications Comments
  • Question

  • In a power supply diagram, which block indicates a pulsating dc output?


  • Options
  • A. transformer
  • B. filter
  • C. rectifier
  • D. regulator

  • Correct Answer
  • rectifier 

    • Diodes and Applications problems

    Search Results

    • 1. What is the current through the zener diode?


    • Options
    • A. 0 mA
    • B. 7 mA
    • C. 8.3 mA
    • D. 13 mA
      • Discuss
    • 2. Rectifier output polarity depends upon:

    • Options
    • A. cycles of input
    • B. capacitor polarity
    • C. half or full wave
    • D. diode installation
      • Discuss
    • 3. Electrons in the outermost orbit or shell of an atom are called

    • Options
    • A. free electrons
    • B. negative ions
    • C. valence electrons
    • D. conduction band electrons
      • Discuss
    • 4. What is wrong with this diode?


    • Options
    • A. open
    • B. short
    • C. nothing
    • D. not enough data
      • Discuss
    • 5. Providing a constant output regardless of ac input or load resistance changes is the function of a:

    • Options
    • A. transformer
    • B. filter
    • C. regulator
    • D. rectifier
      • Discuss
    • 6. The diode schematic arrow points to the:

    • Options
    • A. trivalent-doped material
    • B. positive axial lead
    • C. anode lead
    • D. cathode lead
      • Discuss
    • 7. What is the current through the LED?


    • Options
    • A. 0 mA
    • B. 23 mA
    • C. 18 mA
    • D. 13 mA
      • Discuss
    • 8. The conduction band is closest to the valence band in

    • Options
    • A. semiconductors
    • B. conductors
    • C. insulators
    • D. The distance is the same for all of the above.
      • Discuss
    • 9. Thermal shutdown occurs in an IC regulator if:

    • Options
    • A. power dissipation is too high
    • B. internal temperature is too high
    • C. current through the device is too high
    • D. load resistance increases
      • Discuss
    • 10. A diode for which you can change the reverse bias, and thus vary the capacitance is called a

    • Options
    • A. varactor diode
    • B. tunnel diode
    • C. zener diode
    • D. switching diode
      • Discuss

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