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Home ‣ Electronics ‣ Bipolar Junction Transistors (BJT) Comments
  • Question

  • In a common-base (C-B) amplifier, the output is 180 degrees out of phase with the input.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Bipolar Junction Transistors (BJT) problems

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    • 1. Transistors are controlled to operate as a switch or to operate as a variable resistor.

    • Options
    • A. True
    • B. False
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    • 2. A bipolar transistor has three leads: the base, collector, and emitter.

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    • A. True
    • B. False
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    • 3. A decrease in base current of a C-E amplifier causes the voltage measured between the emitter and the collector to increase.

    • Options
    • A. True
    • B. False
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    • 4. In this analog amplifier the input is in phase with the output.


    • Options
    • A. True
    • B. False
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    • 5. A common-emitter (C-E) is so called because the emitter is connected to both the input and output signals.

    • Options
    • A. True
    • B. False
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    • 6. In a BJT, the collector current is approximately equal to the base current.

    • Options
    • A. True
    • B. False
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    • 7. If this circuit were used in a digital circuit, it would be a NOT gate.


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    • A. True
    • B. False
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    • 8. With a common-collector (C-C) amplifier the input is applied to the base and the output is taken from the emitter.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. A transistor used in a digital circuit will have two operating states, which are cutoff and saturation.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. BJTs are "junction" transistors because they use current-carrying P-N junctions.

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    • A. True
    • B. False
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