# What happens if we apply AC voltage to the transformer?

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## What happens when AC supply is given to transformer?

transformer is a device that in used for increase and decrease the value of voltage without change in frequency. transformer work only on ac supply because A transformer needs an alternating current that will create a changing magnetic field. A changing magnetic field also induces a changing voltage in a coil.

## Can AC voltage be changed by a transformer?

Transformers use electromagnetic induction to change the voltage and current. This change is called transformer action, and describes how the transformer changes an AC signal from its primary to its secondary component (like in the equation above).

## Why do we use AC in transformer?

An AC transformer is an electrical device that is used to change the voltage in alternating current (AC) electrical circuits. One of the great advantages of AC over DC for electric-power distribution is that it is much easier to step voltage levels up and down with AC than with DC.

## Does a transformer convert AC to DC?

The transformer is used to step down or step up the AC voltage, with the principle of electromagnetic induction. … After increasing or decreasing the AC voltage, the rectification circuit converts the AC voltage to DC voltage. An AC to DC transformer is a simple solution for powering up electronics from the AC mains.

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## What would happen if you connect a transformer to a DC circuit with a voltage of 20% of nameplate rating after a steady state condition is reached?

Nothing, because in DC the magnetic flow does not vary, is constant, and have not producing varous of flow. in the winding secondary.

## Why transformer Cannot be used in DC voltage?

When a d.c voltage source is applied across the primary of the transformer,the current in the primary coil remains constant. Hence there is no change in the magnetic flux linked with the secondary. Therefore the voltage across the secondary coil is zero. Thus a transformer can’t step up dc voltage.

## What is a transformer that changes a high AC voltage to a low AC voltage?

Step-up transformers are used at power stations to produce the very high voltages needed to transmit electricity through the National Grid power lines. These high voltages are too dangerous to use in the home, so step-down transformers are used locally to reduce the voltage to safe levels.