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

  • Which is beta's current ratio?


  • Options
  • A. IC/IB
  • B. IC/IE
  • C. IB/IE
  • D. IE/IB

  • Correct Answer
  • IC/IB 

    • Bipolar Junction Transistors (BJT) problems

    Search Results

    • 1. 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
    • 2. In a transistor, collector current is controlled by:

    • Options
    • A. collector voltage
    • B. base current
    • C. collector resistance
    • D. all of the above
      • Discuss
    • 3. If a 2 mV signal produces a 2 V output, what is the voltage gain?

    • Options
    • A. 0.001
    • B. 0.004
    • C. 100
    • D. 1000
      • Discuss
    • 4. Often a common-collector will be the last stage before the load; the main function(s) of this stage is to:

    • Options
    • A. provide voltage gain
    • B. provide phase inversion
    • C. provide a high-frequency path to improve the frequency response
    • D. buffer the voltage amplifiers from the low-resistance load and provide impedance matching for maximum power transfer
      • Discuss
    • 5. What is the current gain for a common-base configuration where IE = 4.2 mA and IC = 4.0 mA?

    • Options
    • A. 16.80
    • B. 1.05
    • C. 0.20
    • D. 0.95
      • Discuss
    • 6. 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
    • 7. Total emitter current is:

    • Options
    • A. IE ? IC
    • B. IC + IE
    • C. IB + IC
    • D. IB ? IC
      • Discuss
    • 8. 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
      • Discuss
    • 9. 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
    • 10. 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

    Comments

    Avatar
    MD umar faruque
    All questions basic electronics
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