What is the principle behind the working of a transformer ? Mention any two sources of energy loss in transformer

Explanation

Transformer: A transformer is a device to vary AC voltages and hence currents.
Principle : It works based on the principle of “Mutual induction".
Power losses in a transformer are
1. Loss due to flux leakage 2. Loss due to resistance of the windings 3. Loss due to eddy currents 4. Loss due to magnetic hysteresis