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Harmonics are voltages and current disturbances that can also be represented by sine waves, but are at different frequencies than the fundamental 60Hz. T or F
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The harmonic frequency is a multiple of the fundamental 60Hz frequency. T or F
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Harmonic frequencies can be 35 Hz, 100 Hz, 165 Hz, and so on. Explain T or F
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Many of the various harmonic waveforms exist in the power supply at one time. T or F
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What happens to the predominate 60 Hz wave form when the many harmonic waveforms are out of phase with each other.
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Does a distorted 60 Hz waveform, caused largely by electronic equipment affect electronic equipment?
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Name three non-linear types of electric loads, other than electronic equipment, that cause harmonics to propagate back into the electrical power supply system?
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Are harmonics a steady-state disturbance or intermittent?
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Name at least two harmful effects that harmonic currents play on the power supply system.
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How can harmonic voltage and current affect neighboring power supply or telephone circuits?
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What is one of the first indications of a problem due to harmonics that a Lineman might come across?
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Why are conductors, transformers, and motors subject to heating when influenced by a high frequency component of a harmonic disturbance?
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Harmonics reduce the reliability of electric signals that activate meters, relays, powerline carriers, and equipment, such as robots. T or F
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Is there a method to test for harmonic interference?
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What can be done to limit the effects of harmonics on sensitive loads?
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Large customers with big power-quality problems. can arrange to have a "custom power" supply. T or F
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