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Electronics Quizzes & Trivia

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Questions and Answers
  • 1. 
    • A. 

      Zero internal resistance

    • B. 

      Infinite internal resistance

    • C. 

      A load-dependent voltage

    • D. 

      A load-dependent current

  • 2. 
    A real voltage source has
    • A. 

      Zero internal resistance

    • B. 

      Infinite internal resistance

    • C. 

      A small internal resistance

    • D. 

      A large internal resistance

  • 3. 
    The net charge of a neutral copper atom is  
    • A. 

      0

    • B. 

      +1

    • C. 

      - 1

    • D. 

      +4

  • 4. 
    At room temperature an intrinsic silicon crystal acts approximately like  
    • A. 

      Battery

    • B. 

      Conductor

    • C. 

      Insulator

    • D. 

      Piece of copper wire

  • 5. 
    What causes the depletion layer?  
    • A. 

      Doping

    • B. 

      Recombination

    • C. 

      Barrier Potential

    • D. 

      Ions

  • 6. 
    With a half-wave rectified voltage across the load resistor, load current flows for what part of a cycle?  
    • A. 

      0 degrees

    • B. 

      90 degrees

    • C. 

      180 degrees

    • D. 

      360 degrees

  • 7. 
    The load voltage is approximately constant when a zener diode is  
    • A. 

      Forward-biased

    • B. 

      Reverse-biased

    • C. 

      Operating in the breakdown region

    • D. 

      Unbiased

  • 8. 
    For typical operation, you need to use reverse bias with a  
    • A. 

      Zener diode

    • B. 

      Photodiode

    • C. 

      Varactor

    • D. 

      All of the above

  • 9. 
    . If the depletion layer gets wider, the capacitance  
    • A. 

      Decreases

    • B. 

      Stays the same

    • C. 

      Increases

    • D. 

      Is variable

  • 10. 
    The currents of a pnp transistor are  
    • A. 

      Usually smaller than npn currents

    • B. 

      Opposite npn currents

    • C. 

      Usually larger than npn currents

    • D. 

      Negative