A transformer

State the principle of transformer. Define efficiency of transformer.State uses of transformers.

The transformer ratio of a step up transformer is

Which type of transformer is a distribution transformer ?

For step-down transformer value of transformation ratio is ……….

The transformer ratio of transformer is 10 : 1 . The current in the primary circuit if the secondary current required is 100 A assuming the transformer be ideal, is

What is step up transformer ? How it differs from step down transformer ?

What is Transformer? Explain step up and step down transformer?

What is transformer?