A 125 kVA transformer having a primary voltage of 2000 V at 50 Hz has 182 primary turns and 40 secondary turns. Neglecting losses, calculate

(a) the full load primary and secondary current

(b) the no-load secondary induced emf.

Answer:

At no-load condition there will not be any current flowing in secondary side of transformer. Therefore there will not be any voltage drop in secondary side, thus induced voltage would be same as secondary side terminal voltage.

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