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we can't use dc everywhere because dc is hazardous for living beings plus we can't transform mechanical energy into dc power directly.

you can see that we use basically ac appliances at home,also dc but with very low voltages. ac is alternating in nature has zero and negative so if any one get in contact with ac it will result in hazard for the half positive cycle and repelling of body for the negative cycle. but in case of dc, the supply is continuous so it'll hazard the body continuously.

another aspect is generation. as i told earlier that we can't transform mechanical energy into dc power directly means we are generating ac supply in most generating stations where we are dealing with mechanical energy conversion. even dc generator generates ac power but by means of commutation process we convert it into the dc.

so it is not possible to use dc or ac everywhere. we have to deal with the both :)

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12y ago

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