why we use only sine wave in ac why we do not use other wave
forms
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Answer Posted / anish
Basically because every periodic function can be represented as a
function of sine and cosine waves (Fourier expansion).
f(x)= a+ sin nx + cos nx (n varies from 1 to infinity)
Therefore a sine (or cosine) wave of AC is the most flexible form
of usage since it can be converted into any other form as required.
Remember, a cosine wave is also a sine wave that is phase shifted
by 90 degrees..
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