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Home ‣ Electronics ‣ Bipolar Junction Transistors (BJT) See What Others Are Saying!
  • Question

  • In a transistor, collector current is controlled by:


  • Options
  • A. collector voltage
  • B. base current
  • C. collector resistance
  • D. all of the above

  • Correct Answer
  • base current 

    • More questions

    • 1. 

      In the given circuit, _____ are in series.


    • Options
    • A. R1 and R3
    • B. R3 and R5
    • C. R5 and R7
    • D. None of the above
      • Discuss
    • 2. A sixteen-input multiplexer will need three data select input control lines.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. R2 is open.


    • Options
    • A. True
    • B. False
      • Discuss
    • 4. When a load is connected to a voltage divider, the total resistance of the circuit will:

    • Options
    • A. decrease
    • B. double
    • C. increase
    • D. remain the same
      • Discuss
    • 5. NMOS devices use MOSFETs to implement the full range of logic gates using the universal NAND gate.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The mimicking of an open/closed switch by a diode allows alternating current to be:

    • Options
    • A. rectified
    • B. regulated
    • C. controlled
    • D. attenuated
      • Discuss
    • 7. When the capacitance in an active high-pass filter increases, the critical frequency decreases.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The induced voltage across a stationary conductor in a stationary magnetic field ___.

    • Options
    • A. equals 0 V
    • B. is usually very large
    • C. varies with time
    • D. depends on the strength of the magnetic field
      • Discuss
    • 9. What is the dielectric constant for ceramic?

    • Options
    • A. between 6 and 8000
    • B. 5.0
    • C. between 5 and 1000
    • D. 3000
      • Discuss
    • 10. A check of all power supply voltages should be made during the ________ method of troubleshooting.

    • Options
    • A. half-split
    • B. diagnosis
    • C. repair
    • D. final test
      • Discuss

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