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Home ‣ Electronics ‣ Alternating Current vs Direct Current Comments
  • Question

  • What voltage will an ac voltmeter display?


  • Options
  • A. rms
  • B. average
  • C. peak
  • D. peak-to-peak

  • Correct Answer
  • rms 

    • Alternating Current vs Direct Current problems

    Search Results

    • 1. The magnitude that an alternation varies from zero is called its:

    • Options
    • A. altitude
    • B. amplitude
    • C. attitude
    • D. polarity
      • Discuss
    • 2. What is the peak value of a household appliance that uses a 230 V ac source?

    • Options
    • A. 163 V
    • B. 230 V
    • C. 325 V
    • D. 480 V
      • Discuss
    • 3. One adjustable knob on the oscilloscope that allows the trace to be aligned with a reference graticule is called the:

    • Options
    • A. position control
    • B. focus control
    • C. intensity control
    • D. volts/cm control
      • Discuss
    • 4. What term expresses the frequency of a rectangular wave?

    • Options
    • A. Hz
    • B. period
    • C. PRF
    • D. PRT
      • Discuss
    • 5. One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used to determine a waveform period is called a:

    • Options
    • A. focus control
    • B. time/cm control
    • C. intensity control
    • D. volts/cm control
      • Discuss
    • 6. The power that is distributed from a power plant to your home is:

    • Options
    • A. high voltage to high voltage
    • B. low voltage to high voltage
    • C. high voltage to low voltage
    • D. low voltage to low voltage
      • Discuss
    • 7. What does the CRT oscilloscope display?

    • Options
    • A. voltage and period
    • B. current and frequency
    • C. rms voltage and current
    • D. frequency and voltage
      • Discuss
    • 8. Which percentages of full-amplitude rise time are used for a pulse wave?

    • Options
    • A. 0 to 50 percent
    • B. 0 to 100 percent
    • C. 5 to 95 percent
    • D. 10 to 90 percent
      • Discuss
    • 9. 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
    • 10. A sine wave reaches maximum positive voltage at:

    • Options
    • A. 90°
    • B. 0°
    • C. ?90°
    • D. 360°
      • Discuss

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