AC Waveform Fundamentals
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Questions and Answers

What is a complete variation of a sinusoidal ac waveform called?

  • Frequency
  • Waveform (correct)
  • Cycle (correct)
  • Amplitude
  • During which half-cycle does the current in the circuit flow in a clockwise direction?

  • During the first half-cycle when the source voltage is positive (correct)
  • When the source voltage is zero
  • When the source voltage is negative
  • During the entire cycle
  • Which symbol is used to represent sinusoidal ac voltage source in circuit diagrams?

  • E
  • i
  • V
  • e (correct)
  • What happens to the polarity of a sinusoidal ac voltage source during a complete cycle?

    <p>It alternates between positive and negative (D)</p> Signup and view all the answers

    What characterizes a periodic waveform such as a sinusoidal ac waveform?

    <p>It repeats itself at regular intervals (C)</p> Signup and view all the answers

    Flashcards

    AC Voltage Waveform

    A voltage that changes direction and magnitude over time in a repeating pattern, like a sine wave.

    AC Voltage Source Symbol

    A graphic representation of an alternating current voltage source. It typically includes a lowercase e (lower case e) to indicate time-varying voltage.

    AC Current

    Electric current that reverses direction in a regular pattern.

    Sinusoidal Waveform

    A repeating, wave-like pattern often representing AC voltage or current, with a smooth curve.

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    AC Cycle

    One complete pattern of alternating voltage or current.

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