Electronics Quiz On Diode Applications!

34 Questions | Attempts: 3326

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Electronics Quiz On Diode Applications! - Quiz

Do you know about diodes and their applications? Play this electronics quiz based on diode applications to check your understanding of electronic devices. A diode is a two-terminal electrical component that allows the current to flow easily in one direction. Basically, it acts as a one-way switch for current. In the quiz below, you can learn and practice electronics questions mainly based on diodes and applications. So, what are you waiting for? Take the quiz, then.


Questions and Answers
  • 1. 
    The average value of a half-wave rectified voltage with a peak value of 200V is
    • A. 

      63.7V

    • B. 

      127.3 V

    • C. 

      141 V

    • D. 

      0 V

  • 2. 
    When a 60Hz sinusoidal voltage is applied to the input of a half-wave rectifier, the output frequency is
    • A. 

      120 Hz

    • B. 

      30 Hz

    • C. 

      60 Hz

    • D. 

      0 Hz

  • 3. 
    The peak value of the input to the half-wave rectifier is 10V. The approximate peak value of the output is
    • A. 

      10 V

    • B. 

      3.18 V

    • C. 

      10.7 V

    • D. 

      9.3 V

  • 4. 
    The diode, in a half wave rectifier with a peak input of 10V, must be able to withstand a reverse voltage of
    • A. 

      10 V

    • B. 

      5 V

    • C. 

      20 V

    • D. 

      3.18 V

  • 5. 
    The average value of a full-wave rectified voltage with a peak value of 75V is
    • A. 

      53 V

    • B. 

      47.8 V

    • C. 

      37.5 V

    • D. 

      23.9 V

  • 6. 
    When a 60Hz sinusoidal voltage is applied to the input of a full-wave rectifier, the output frequency is
    • A. 

      120 Hz

    • B. 

      60 Hz

    • C. 

      240 Hz

    • D. 

      0 Hz

  • 7. 
    The total secondary voltage in a center-tapped full-wave rectifier is 125Vrms. Neglecting the diode drop, the rms output voltage is
    • A. 

      125 V

    • B. 

      177 V

    • C. 

      100 V

    • D. 

      62.5 V

  • 8. 
    When the peak output voltage is 100V, the PIV for each diode in a center-tapped full-wave rectifier is (neglecting the diode drop)
    • A. 

      100 V

    • B. 

      200 V

    • C. 

      141 V

    • D. 

      50 V

  • 9. 
    When the rms output voltage of a bridge full-wave rectifier is 20V, the peak inverse voltage across the diodes is (neglecting the diode drop)
    • A. 

      20 V

    • B. 

      40 V

    • C. 

      28.3 V

    • D. 

      56.6 V

  • 10. 
    The ideal dc output voltage of a capacitor-input filter is equal to
    • A. 

      The peak value of the rectified voltage

    • B. 

      The average value of the rectified voltage

    • C. 

      The rms value of the rectified voltage

    • D. 

      Twice the value of the rectified voltage

  • 11. 
    A certain power-supply filter produces an output with a ripple of 100mV peak-to-peak and a dc value of 20V. The ripple factor is
    • A. 

      0.05

    • B. 

      0.005

    • C. 

      0.00005

    • D. 

      0.02

  • 12. 
    A 60V peak full-wave rectified voltage is applied to a capacitor-input filter. If f = 120 Hz, RL=10 kΩ and C=10 µF, the ripple voltage is
    • A. 

      0.6 V

    • B. 

      6 mV

    • C. 

      5.0 V

    • D. 

      2.88 V

  • 13. 
    If the load resistance of a capacitor-filtered full-wave rectifier is reduced, the ripple voltage
    • A. 

      Increases

    • B. 

      Is not affected

    • C. 

      Decreases

    • D. 

      Has a different frequency

  • 14. 
    Line regulation is determined by
    • A. 

      Load current

    • B. 

      Zener current and load current

    • C. 

      Changes in load resistance

    • D. 

      Changes in zener current and load current

  • 15. 
    Load regulation is determined by
    • A. 

      Changes in load current and input voltage

    • B. 

      Changes in load current and output voltage

    • C. 

      Changes in load resistance and input voltage

    • D. 

      Changes in zener current and load current

  • 16. 
    A 10 V peak-to-peak sinusoidal voltage is applied across a silicon diode and series resistor. The maximum voltage across the diode is
    • A. 

      9.3 V

    • B. 

      5 V

    • C. 

      0.7 V

    • D. 

      10 V

    • E. 

      4.3 V

  • 17. 
    In the input voltage to a voltage tripler has an rms value of 12 V, the dc output voltage is approximately
    • A. 

      36 V

    • B. 

      50.9 V

    • C. 

      33.9 V

    • D. 

      32.4 V

  • 18. 
    If one of the diode in a bridge full-wave rectifier opens, the output is
    • A. 

      0 V

    • B. 

      A half-wave rectified voltage

    • C. 

      One-fourth the amplitude of the input voltage

    • D. 

      A 120 Hz voltage

  • 19. 
    If you are checking a 60Hz full-wave bridge rectifier and observe that the output has a 60Hz ripple,
    • A. 

      The circuit is working properly

    • B. 

      The transformer secondary is shorted

    • C. 

      There is an open diode

    • D. 

      The filter capacitor is leaky

  • 20. 
    If one of the diode in a half-wave rectifier opens, the output is
    • A. 

      0 V

    • B. 

      A half-wave rectified voltage

    • C. 

      One-fourth the amplitude of the input voltage

    • D. 

      A 120 Hz voltage

  • 21. 
    If one of the diodes in a bridge rectifier shorts,
    • A. 

      The shorted diode may still function

    • B. 

      The transformer will be damaged

    • C. 

      The circuit will be half-wave rectifier

    • D. 

      Load current will be minimum

  • 22. 
    When the primary winding of the transformer in a power supply opens, output voltage is
    • A. 

      0 V

    • B. 

      A half-wave rectified voltage

    • C. 

      One-fourth the amplitude of the input voltage

    • D. 

      A 120 Hz voltage

  • 23. 
    In a half-wave rectifier, the current through the load is approximately
    • A. 

      The same as the input cycle

    • B. 

      50% of the input cycle

    • C. 

      One-fourth the amplitude of the input current

    • D. 

      A 60Hz current

  • 24. 
    Which of the following is true?
    • A. 

      A full-wave voltage occurs on each half of the input cycle and has the frequency of twice the input frequency.

    • B. 

      A half-wave voltage occurs once each input cycle and has the frequency equal to the half of the input frequency.

    • C. 

      A full-wave voltage occurs on each half of the input cycle and has the period twice the input period.

    • D. 

      A half-wave voltage occurs once each half of the input cycle and has the frequency equal to the half of the input frequency.

  • 25. 
    Which type of full-wave rectifier has the greater output voltage for the same input voltage and transformer turns ratio?
    • A. 

      Center-tapped full-wave rectifier

    • B. 

      Bridge full-wave rectifier

    • C. 

      Non-center-tapped full-wave rectifier

    • D. 

      All (a), (b) and (c) have the same output voltage

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