Question

At the terminal of the electricity generation plant, and the consumer, which type among step-up, and step-down transformers are used?

Answer 1

A step up transformer used to increase the voltage and to reduce the current.

A step down transformer used to reduce the voltage and to increase the current. In both the case Power remains same as P=VI

At power generation stations Step up transformers are used to reduce the power losses caused by distribution lines.

At consumer level step down transformers are used to increase current for consumer demand. Higher voltages are dangerous, so at consumer level volatage is reduced to safer level.