Question

Read the following paragraph and answer the question:

Long distance power transmissions

The large-scale transmission and distribution of electrical energy over long distances is done with the use of transformers. The voltage output of the generator is stepped up. It is then transmitted over long distances to an area sub-station near the consumers. There the voltage is stepped down. It is further stepped down at distributing sub-stations and utility poles before a power supply of 240 V reaches our homes.

Which of the following statement is true?

Options

• Energy is created when a transformer steps up the voltage

• A transformer is designed to convert an AC voltage to DC voltage.

• Step–up transformer increases the power for transmission.

• Step–down transformer decreases the AC voltage.

Answer 1

Step–down transformer decreases the AC voltage.