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Inductors - Technical MCQs

Q1:

A transformer is used:

A to couple electric energy from one dc circuit to another

B to couple electric energy from an ac circuit to a dc circuit

C to couple electric energy from a dc circuit to an ac circuit

D to couple electric energy from one ac circuit to another

ANS:D - to couple electric energy from one ac circuit to another

Transformers are used for household appliances which supply 230v 50hz of sinusoidal AC supply.