Answers

2015-12-27T19:04:31+05:30
If dc is setup, due to the excess flow of current, the device might blast.
So always ac is only setup using transformers. We should understand that here ac supplies dc to devices.

Thanks

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2015-12-28T15:53:18+05:30
Transformers are not setup using DC current a transformer cannot commute direct current and may get blast. So, only AC current is used to setup transformers
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