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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. When a transistor is operating as a variable resistor it has transistance.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A transformer can be designed to step up or step down dc voltage.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. When is a capacitor fully charged?

    • Options
    • A. when the voltage across its plates is of the voltage from ground to one of its plates
    • B. when the current through the capacitor is the same as when the capacitor is discharged
    • C. when the voltage across the plates is 0.707 of the input voltage
    • D. when the current through the capacitor is directly proportional to the area of the plates
      • Discuss
    • 4. What is the power dissipated by R1, R2, and R3?


    • Options
    • A. P1 = 0.13 W, P2 = 0.26 W, P3 = 0.12 W
    • B. P1 = 0.26 W, P2 = 0.52 W, P3 = 0.23 W
    • C. P1 = 0.52 W, P2 = 0.92 W, P3 = 0.46 W
    • D. P1 = 1.04 W, P2 = 1.84 W, P3 = 0.92 W
      • Discuss
    • 5. The first goal(s) to accomplish in analyzing a complex series?parallel circuit is to:

    • Options
    • A. equate all parallel components
    • B. equate all series components
    • C. solve for all the voltage drops
    • D. solve for the total current and resistance
      • Discuss
    • 6. One problem with mechanically variable resistors is noticeable in audio circuits as:

    • Options
    • A. scratchy noise
    • B. lack of bass response
    • C. variable volume
    • D. too much treble response
      • Discuss
    • 7. The voltage drop across a series resistor is proportional to what other value?

    • Options
    • A. total resistance
    • B. its own resistance
    • C. wattage rating
    • D. the amount of time the circuit is on
      • Discuss
    • 8. What is the approximate phase angle in a series RLC circuit when VC = 117 V, VR = 14.5 V, and VL = 3.3 V?

    • Options
    • A. ?45.0 degrees
    • B. ?82.7 degrees
    • C. ?90.0 degrees
    • D. ?172.7 degrees
      • Discuss
    • 9. A sine wave reaches maximum positive voltage at:

    • Options
    • A. 90°
    • B. 0°
    • C. ?90°
    • D. 360°
      • Discuss
    • 10. A program that contains nothing but strings of zeros and ones is called a(n) ________.

    • Options
    • A. machine language program
    • B. assembly language program
    • C. interpreted program
    • D. binary language program
      • Discuss

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