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Question
```why we use only sine wave in ac why we do not use other wave
forms```
Question Submitted By :: Kishore4
I also faced this Question!!     Rank Answer Posted By

Re: why we use only sine wave in ac why we do not use other wave forms
# 11
the sine wave is exists from nature,when we use signals
like ramp,step,impulse, dirac comb,rect,etc..,originating
from sudden change so system components like
diodes ,resistors will destroy due high flow of current.due
to this sinewave is prefferble

 Is This Answer Correct ? 3 Yes 2 No
Siva

Re: why we use only sine wave in ac why we do not use other wave forms
# 12
any waveform showing change in magnitude and direction is
ac wether it is square triangular or whtever, but
calculation using sinusoidal(sine and cosine as well)
becomes easy. for exmpl sum of two sine waves is a sine
wave.

 Is This Answer Correct ? 1 Yes 1 No
Suhail Javed

Re: why we use only sine wave in ac why we do not use other wave forms
# 13
The reason is that electromechanical alternator outputs sine-wave AC.The voltage produced by the stationary coils by the motion of the rotating magnet is proportional to the rate at which the magnetic flux is changing perpendicular to the coils (Faraday's Law of Electromagnetic Induction). That rate is greatest when the magnet poles are closest to the coils, and least when the magnet poles are furthest away from the coils. Mathematically, the rate of magnetic flux change due to a rotating magnet follows that of a sine function, so the voltage produced by the coils follows that same function.
 Is This Answer Correct ? 2 Yes 2 No
Indra Narayan Chakraborty

Re: why we use only sine wave in ac why we do not use other wave forms
# 14
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..

 Is This Answer Correct ? 2 Yes 0 No
Anish

Re: why we use only sine wave in ac why we do not use other wave forms
# 15
Answer at sl 9 by sudersan is the only correct answer.all others are not as approperiate.
 Is This Answer Correct ? 0 Yes 0 No
Ucpatnaik

Re: why we use only sine wave in ac why we do not use other wave forms
# 16
It is easy to find
out phase difference
or phase angle in
sine wave than other
wave so sine wave is
used rather than
other wave

 Is This Answer Correct ? 1 Yes 1 No
Sachin

Re: why we use only sine wave in ac why we do not use other wave forms
# 17
if we apply any wave form other than sine wave to the transformer the output is spikes due differentiation and devices dont work for those spikes and damage all home appliances so we use sine wave only
 Is This Answer Correct ? 0 Yes 0 No
Vijaykumar

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