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Alternating Current and Voltage problems

  • 1. In both induction and synchronous ac motors

  • Options
  • A. the operating speed is very steady
  • B. the stator magnetic field is stationary
  • C. the stator magnetic field rotates
  • D. the "squirrel cage" forms the rotor
    • Discuss
  • 2. What is the fourth harmonic of a fundamental frequency of 400 Hz?

  • Options
  • A. 100 Hz
  • B. 4 kHz
  • C. 4 Hz
  • D. 1.6 kHz
    • Discuss
  • 3. What is the instantaneous peak voltage at 250° on a 6 V peak sine wave?

  • Options
  • A. +5.64 V
  • B. ?5.64 V
  • C. +26.13 V
  • D. ?26.13 V
    • Discuss
  • 4. Electronics Alternating Current and Voltage: Which point is

    Which point is the trailing edge of the repetitive pulse waveform in the given circuit?


  • Options
  • A. Point A
  • B. Point B
  • C. Point C
  • D. Point D
    • Discuss
  • 5. Electronics Alternating Current and Voltage: What type of wav

    What type of waveform is shown in the given circuit?


  • Options
  • A. Sine wave
  • B. Square wave
  • C. Triangle wave
  • D. Sawtooth wave
    • Discuss
  • 6. Electronics Alternating Current and Voltage: What is the dc

    What is the dc voltage of the waveform in the given circuit?


  • Options
  • A. 2 V
  • B. 4 V
  • C. 6 V
  • D. 8 V
    • Discuss

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