Question

State the underlying principle of a transformer. How is the large scale transmission of electric energy over long distances done with the use of transformers ?

Answer 1

Answer:

Explanation:

The principle of transformer is based upon the principle of mutual induction which states that due to continuous change in the current in the primary coil an emf gets induced across the secondary coil. At the power generating station the step up transformers step up the output voltage which reduces the current through the cables and hence reduce resistivity power loss. Then at the consumer end a step down transformer step down the voltage.Hence the large scale transmission of electric energy over long distances done with the use of transformers is taken place.

Answer 2

Answer:

Transformers is a device which converts high voltage AC into low voltage AC and vice versa. It is based on the principle of mutual induction. When alternating current is passed through a coil, an induced emf is set up in the neighbouring coil.

Transformers are used for transmission of electrical energy over long distances.

It set up the output voltage of power plant using step up transformer which reduces the current and increase the voltage and hence reduce resistive power loss. Then a step down transformer is used this consumer and to step down the voltage and to increase the current.