Transformer Interview Question Answer - 3

On which parameter the weight of the copper winding in the transformer depends?

• The weight of the copper winding material depends upon ampere turns of the winding.

What amount of power transfer inductively and conductively in the step-down transformer?

Step down auto transformer

• Power transfer inductively = (1 – k) × Input
• Power transfer conductively = k × Input

Transformer Interview Question Answer - 2

Why the secondary amp – turns are called as demagnetizing ampere - turns in the transformer?

Demagnetizing ampere turns

When the current is passing through secondary winding of the transformer, secondary flux is produced which oppose the main flux therefore the main flux is reduced. As the secondary amp – turns reduces the main flux, it is called as demagnetizing ampere – turns.

Transformer Interview Question Answer - 1

At what principle the transformer operates?

Principle of transformer

• The transformer works on the principle of mutual induction between two or more than two coils which are linked by common magnetic flux.

What is main function of the core in the transformer?

Function of transformer core

• To reduce reluctance of the magnetic path
• To support the winding of the transformer