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82 question Harmonics correspondence course based on the 2005 NEC.   Course #8258

 

  1. _____ is the sum of the product of each harmonic current squared and that harmonic number squared for harmonics from the fundamental (60 Hz) to the highest harmonic of any measurable consequence.
  1. X Factor
  2. Y Factor
  3. K Factor
  4. V Factor

 

  1. A nonlinear load is one that opposes the applied voltage with constant impedance, resulting in a current waveform that changes in direct proportion to the sinusoidal change in the applied voltage.

     A. True
     B. False

  1. _____ is an example of a linear load.
  1. Resistance heating
  2. Incandescent lighting
  3. Electronic ballasts
  4. both a and b
  1. In common electrical distribution systems in the United States, the fundamental frequency is _____.
  1. 60 Hz
  2. 30 Hz
  3. 20 Hz
  4. 10 Hz
  1. A linear load is one that does not oppose the applied voltage with constant impedance.

      A. True
      B. False