Transformers - Engineering

Q1:

If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is

A 25 W

B 0 W

C 250 W

D 2.5 W

ANS:A - 25 W

An ideal transformer is one that has no losses. Its winding has no ohmic resistance, there is no magnetic leakage.

That means to input power = output power.