Why is a transformer needed in a power supply?

What is the purpose of transformers?

Transformers are employed for widely varying purposes; e.g., to reduce the voltage of conventional power circuits to operate low-voltage devices, such as doorbells and toy electric trains, and to raise the voltage from electric generators so that electric power can be transmitted over long distances.

What is the function of transformer in power system?

A transformer is an electrical device designed and manufactured to step voltage up or step down. Electrical transformers operate on the principle of magnetic induction and have no moving parts.

What is the purpose of a transformer and how does it work?

A transformer is an electrical apparatus designed to convert alternating current from one voltage to another. It can be designed to “step up” or “step down” voltages and works on the magnetic induction principle.

What would happen if a transformer is connected to a DC supply?

If the primary of a transformer is connected to the DC supply, the flux produced in the primary will be of constant magnitude because of DC current. … So the transformer can be damaged due to this high current, if it is connected to DC supply.

What happens when a transformer blows?

When a transformer blows, it interrupts electrical service to any residences or businesses connected to the transformer. Electric service crews must replace the destroyed hardware, first shutting down the incoming electrical line to prevent damage and injury.

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What is meant by transformer action?

Transformer action is a phenomenon by which EMF(Electro-motive force) is induced in from one coil to the other coil by electro magnetic induction. … When a certain AC voltage is applied to a coil, current, proportion to the applied voltage and inversely proportional to the impedance, flow through the coil.