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

  • The input/output relationship of the common-collector and common-base amplifiers is:


  • Options
  • A. 270 degrees
  • B. 180 degrees
  • C. 90 degrees
  • D. 0 degrees

  • Correct Answer
  • 0 degrees 

    • Bipolar Junction Transistors (BJT) problems

    Search Results

    • 1. Total emitter current is:

    • Options
    • A. IE ? IC
    • B. IC + IE
    • C. IB + IC
    • D. IB ? IC
      • Discuss
    • 2. When transistors are used in digital circuits they usually operate in the:

    • Options
    • A. active region
    • B. breakdown region
    • C. saturation and cutoff regions
    • D. linear region
      • Discuss
    • 3. Which is beta's current ratio?

    • Options
    • A. IC/IB
    • B. IC/IE
    • C. IB/IE
    • D. IE/IB
      • Discuss
    • 4. In a C-E configuration, an emitter resistor is used for:

    • Options
    • A. stabilization
    • B. ac signal bypass
    • C. collector bias
    • D. higher gain
      • Discuss
    • 5. In a transistor, collector current is controlled by:

    • Options
    • A. collector voltage
    • B. base current
    • C. collector resistance
    • D. all of the above
      • Discuss
    • 6. With the positive probe on an NPN base, an ohmmeter reading between the other transistor terminals should be:

    • Options
    • A. open
    • B. infinite
    • C. low resistance
    • D. high resistance
      • Discuss
    • 7. Three different Q points are shown on a dc load line. The upper Q point represents the:

    • Options
    • A. minimum current gain
    • B. intermediate current gain
    • C. maximum current gain
    • D. cutoff point
      • Discuss
    • 8. A current ratio of IC/IE is usually less than one and is called:

    • Options
    • A. beta
    • B. theta
    • C. alpha
    • D. omega
      • Discuss
    • 9. Most of the electrons in the base of an NPN transistor flow:

    • Options
    • A. out of the base lead
    • B. into the collector
    • C. into the emitter
    • D. into the base supply
      • Discuss
    • 10. The symbol hfe is the same as:

    • Options
    • A.
    • B.
    • C. hi-fi
    • D.
      • Discuss

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