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Transformers

Q1:

A transformer responds only to dc.

A True

B False

ANS:B - False

We know that the Inductive Reactance (XL) is zero on dc. Since frequency is zero.

In case of connecting transformer's coil to a dc supply a short-circuit will take place immediately and a heavy current will pass capable to burn and damage the coil (in this case the coil resistance is negligible or almost zero).



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