# Frequent question: What is use of transformer having same winding on both sides?

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## Is power the same on both sides of a transformer?

A transformer cannot generate power out of thin air and so the power on both sides is (roughly) the same. That means if the voltage on the secondary side is higher then the secondary current is actually lower than the primary.

## What will happen if the number of turns in primary and secondary coil are equal?

Physical Science

So, if we have the same amount of turns in both the primary and secondary coils, the transformer would not change the voltage or current and we would lose power and energy to heat and the process of transformation would not occur.

## What is the difference between 2 winding and 3 winding transformer?

For the short-circuit test, the two winding is short circuit, and the third winding is kept open. In the third step, the second winding is opened, and the first and the third windings are short-circuited. Low voltage is applied to the third coil and full load current flows through the first windings.

## Can I connect two transformers together?

It is possible to connect transformers that have different polarities in parallel. You need to remember that you match up the polarities. … The supply line polarity determines the primary polarity of the transformer. The primary polarity determines the secondary polarity of the transformer.

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## Why are the primary and secondary coils of a transformer wrapped around the same closed loop of iron?

“Both coils are wrapped around the same core so that nearly all of the magnetic flux created by the primary passes through the secondary coil, and thus induces current in the secondary when the current in the primary changes.”

## What are the differences between auto transformer and 2 winding transformer?

In two winding transformer, whole power is transferred from primary to secondary side by means of induction ONLY While, in the case of Auto transformer, part of the whole power is transferred by induction and rest of the power is transferred through conduction.