Physics, asked by vishu0321, 1 year ago

in what ways AC in domestic use is better than DC​

Answers

Answered by sarayu56
0
Because in nineteenth century when AC systems started to grow rapidly, we lacked power electronics technology and also did not have strong focus on renewable energy and energy storage system. Fossil fuels were used to generate ac and transformers proved to be the easiest way to step up or down for efficient generation and distribution.
We did not have power electronics technology. This means voltage step up and step down were downright impossible for dc systems. This is the main point why ac became so popular. It is very important to transmit the generated power in very high voltage and distribute it at lower voltage which requires voltage step up and down.
Another important point is voltage regulation. If ac voltage drops due to the line resistance it is very easy to bring it back to the original value just by using capacitors. We do not need any active energy source. However, in DC systems the drop in voltage must be supported by an active dc source and power electronics.
Third point is circuit breakers. As we know that AC has zero crossings so it is very easy to break a circuit at zero current. However a pure dc does not have any zero crossing. So it is extremely difficult to design a circuit breaker for a dc system.
Another very crucial point is Induction motors. They run on ac, very robust, long life, workhorse of the industry. Made the ac systems look more attractive.
This is why we built ac grids, ac loads, ac generation systems, and ac domestic line even if the dc systems have the following advantages. Transmission is efficient and reliable for long distance (look for High-voltage direct current). No pain of reactive power. Power factor is always unity. No Skin effect. Hence reduced copper cost. These are all good points of dc.

....hope this helps you...

vishu0321: very big
vishu0321: so is not useful
vishu0321: so it is not useful
vishu0321: sorry
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