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Answer Posted / sunil guru
HARMONICS --- BASICALLY ARE THE INTEGRAL MULTIPLE OF FUNDAMENTAL FREQUENCY.... WHICH CAUSES DISTORTION AND DISTURBANCES IN THE SYSTEM.....
AND IT RESULTS IN CHANGING OF THE SINUSOIDAL WAVE FORM..
SO THAT SYSTEM IS NOT GETTING PURE SINE WAVE AND ITS LOSSES ARE INCREASED AND WORKING EFFICIENCY IS DECREASED....
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