Answer / sunil mehta

In transformer, if we give DC Power to transformer then
very small emf is induced in secondary side as very small
magnetic field generated through DC supply. But if we used
AC supply then we get enough voltage on secondary side
which is our desired quantity.

Answer / abid ali khattak

Because of Meutial.induction.and sign wave frequency
induction.

Answer / victorvgp

Dc transformers are also available in markets

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