Question

How are step-up transformers used in the transmission of electrical energy?
A They decrease the voltage before it leaves a power plant.
B They increase the voltage for efficient long-distance transmission.
C They increase the current for efficient long-distance transmission.
D They increase the voltage and the current for a short distance
transmission

Answer 1

Answer:

B

Explanation:

Transformer is a device used to convert low a.c. voltage to high a.c. voltage and vice versa.

There is two types of transformer, they are:

1.Step up transformer

It converts low a.c. voltage into high a.c. voltage.

2.Step down transformer

It converts low a.c. voltage to high a.c. voltage.