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

  • To operate properly, a transistor's base-emitter junction must be forward biased with reverse bias applied to which junction?


  • Options
  • A. collector-emitter
  • B. base-collector
  • C. base-emitter
  • D. collector-base

  • Correct Answer
  • collector-base 

    • Bipolar Junction Transistors (BJT) problems

    Search Results

    • 1. What is the peak-to peak voltage of a 56 Vrms ac voltage?

    • Options
    • A. 158 V
    • B. 164 V
    • C. 82 V
    • D. 79 V
      • Discuss
    • 2. What is the period of a 16 MHz sine wave?

    • Options
    • A. 196 ns
    • B. 62.5 ns
    • C. 31.25 ns
    • D. 19.9 ns
      • Discuss
    • 3. How long would it take to transmit an electromagnetic wave to a receiving antenna 1,000 miles away?

    • Options
    • A. 5.38 ms
    • B. 10.8 ms
    • C. 53.8 ms
    • D. 108 ms
      • Discuss
    • 4. A sine wave reaches maximum positive voltage at:

    • Options
    • A. 90°
    • B. 0°
    • C. ?90°
    • D. 360°
      • Discuss
    • 5. What is the waveform period of a square wave signal that horizontally covers 3 major divisions per cycle? (time/cm = 50 ms)

    • Options
    • A. 50 ms
    • B. 100 ms
    • C. 150 ms
    • D. 200 ms
      • Discuss
    • 6. Voltage-divider bias provides:

    • Options
    • A. an unstable Q point
    • B. a stable Q point
    • C. a Q point that easily varies with changes in the transistor's current gain
    • D. a Q point that is stable and easily varies with changes in the transistor's current gain
      • Discuss
    • 7. A transistor has a of 250 and a base current, IB, of 20 µ A. The collector current, IC, equals:

    • Options
    • A. 500 µ A
    • B. 5 mA
    • C. 50 mA
    • D. 5 A
      • Discuss
    • 8. When a silicon diode is forward biased, what is VBE for a C-E configuration?

    • Options
    • A. voltage-divider bias
    • B. 0.4 V
    • C. 0.7 V
    • D. emitter voltage
      • Discuss
    • 9. The ends of a load line drawn on a family of curves determine:

    • Options
    • A. saturation and cutoff
    • B. the operating point
    • C. the power curve
    • D. the amplification factor
      • Discuss
    • 10. 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

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