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Home ‣ Electronics ‣ Transistors and Applications Comments
  • Question

  • In order to sustain oscillations in a feedback oscillator, the gain should be _________ so the product of Av × B equals_______.


  • Options
  • A. reduced, one
  • B. reduced, less than one
  • C. increased, more than one
  • D. increased, much greater than one

  • Correct Answer
  • reduced, one 

    • Transistors and Applications problems

    Search Results

    • 1. The gate-source junction of a JFET must be ________ for proper linear operation.

    • Options
    • A. forward-biased
    • B. reverse-biased
    • C. either forward-biased or reverse-biased
    • D. neutral
      • Discuss
    • 2. The gain of a BJT is called _______ and the gain of a JFET is called _______.

    • Options
    • A. beta, alpha
    • B. transconductance, beta
    • C. beta, transconductance
    • D. transconductance, transconductance
      • Discuss
    • 3. A _______________ JFET amplifier provides a voltage gain of less than one.

    • Options
    • A. common-source
    • B. common-channel
    • C. common-drain
    • D. None of the above
      • Discuss
    • 4. Removing a bypass capacitor from a common-emitter amplifier circuit will _________ voltage gain and ________ input resistance.

    • Options
    • A. increase, decrease
    • B. decrease, increase
    • C. decrease, decrease
    • D. increase, increase
      • Discuss
    • 5. Changing ________ can control the voltage gain of a common-source amplifier.

    • Options
    • A. the input voltage
    • B. gm
    • C. VDD
    • D. RS
      • Discuss
    • 6. Isolation amps are named as such because they are sealed for protection from outside environmental damage.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Clampers are often called peak detectors.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. OTA stands for Operational Transistor Amplifier.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Typical isolation amplifiers use optical coupling.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. One of the principal areas of application for an isolation amplifier is power plant instrumentation.

    • Options
    • A. True
    • B. False
      • Discuss

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