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Home ‣ Electronics ‣ Thyristors and Tranducers See What Others Are Saying!
  • Question

  • What does a hall effect sensor sense?


  • Options
  • A. temperature
  • B. moisture
  • C. magnetic fields
  • D. pressure

  • Correct Answer
  • magnetic fields 

    • More questions

    • 1. 

      How much current is flowing through R1 in the given circuit?


    • Options
    • A. 0.3 A
    • B. 0.15 A
    • C. 0.5 A
    • D. 0.68 A
      • Discuss
    • 2. The ___ of a coil is the inherent resistance of the wire.

    • Options
    • A. ac resistance
    • B. reactance
    • C. winding resistance
    • D. permeability
      • Discuss
    • 3. The number 0.0136 equals 13.6 × ___.

    • Options
    • A. 10?1
    • B. 10?2
    • C. 10?3
    • D. 10?4
      • Discuss
    • 4. Breakdown voltage and peak inverse voltage are the same.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. ___ occurs when a pn junction is first formed.

    • Options
    • A. Recombination
    • B. Covalent bonding
    • C. Crystallization
    • D. Breakdown
      • Discuss
    • 6. Using a voltage divider the voltage across R1 is 10 V, R2 is 15 V, and R3 is 30 V.


    • Options
    • A. True
    • B. False
      • Discuss
    • 7. The sum-of-products form is a Boolean expression that describes the ANDing of two or more OR functions.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The collector current in a class A amplifier flows for ________ of the ac input signal.

    • Options
    • A. < 180°
    • B. 180°
    • C. < 360°
    • D. 360°
      • Discuss
    • 9. VCE approximately equals ________ when a transistor switch is cut off.

    • Options
    • A. VCC
    • B. VB
    • C. 0.2 V
    • D. 0.7 V
      • Discuss
    • 10. 

      The output voltage at the resonant frequency is ______ in the given circuit. If a 10 kΩ load is connected.


    • Options
    • A. 553 mV
    • B. 5.65 V
    • C. 6.01 V
    • D. 6.5 V


      • Discuss

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