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Home ‣ Electronics ‣ Diodes and Applications Comments
  • Question

  • ___ occurs when a pn junction is first formed.


  • Options
  • A. Recombination
  • B. Covalent bonding
  • C. Crystallization
  • D. Breakdown

  • Correct Answer
  • Recombination 

    • Diodes and Applications problems

    Search Results

    • 1. 
      Atoms in a silicon crystal are held together by ___ bonds.

    • Options
    • A. crystal
    • B. chemical
    • C. electrical
    • D. covalent
      • Discuss
    • 2. Special diodes designed to conduct in the reverse direction are called _______________ diodes.

    • Options
    • A. zener
    • B. varactor
    • C. LED
    • D. switching
      • Discuss
    • 3. 

      Connecting a capacitor filter to the circuit in the given circuit will___.


    • Options
    • A. produce a nearly-constant dc voltage
    • B. reduce the output voltage
    • C. increase the ripple voltage
    • D. lower the surge current
      • Discuss
    • 4. A two-diode rectifier will not operate without a _________.

    • Options
    • A. center-tapped transformer
    • B. voltage regulator
    • C. capacitive filter
    • D. phase-inverting transformer
      • Discuss
    • 5. Typically the forward voltage on an LED is between _______ and ________.

    • Options
    • A. 1.5 V, 3.7 V
    • B. 0.7 V, 1.1 V
    • C. 1 V, 3 V
    • D. 1 V, 6 V
      • Discuss
    • 6. 

      The peak output voltage from the circuit in the given circuit equals ___.


    • Options
    • A. 3 V
    • B. 3.7 V
    • C. 2.3 V
    • D. 0 V
      • Discuss
    • 7. An electron can move to another atom's orbit only while in the _______.

    • Options
    • A. valence band
    • B. conduction band
    • C. orbit nearest the nucleus
    • D. covalent band
      • Discuss
    • 8. Subtracting 18 × 102 from 480 × 101 results in 30 × 102.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The coulomb is the unit for charge.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Only electrical quantities have symbols associated with them.

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

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