The National Grid And Transformers

Question 0

Why do the consumption of electricity vary?

Answer 0

Peak and off-peak times

In the winter consumption is higher because people use more electricity for lighting and heating

Question 1

Name four reasons why we need it National Grid

Answer 1

A reliable secure energy supply
And electricity supply the match is the change in demand during the day and over the course of the year
High-voltage powerlines to connect all power stations to the consumers
Electrical substation is a control voltage been supplied to consumers

Question 2

What happens when an electrical current passes down the wire?

Answer 2

The wire heats up

Question 3

What is true for the higher the current?

Answer 3

The higher the heat loss

Question 4

What is the use for step up transformers?

Answer 4

Create high voltages very low current so that the energy is lost is heat in the powerlines is very small

Question 5

What is the use for step down transformers?

Answer 5

The lower the voltage and higher the current for safety in the home

Question 6

What is the National Grid?

Answer 6

A network of power cables that connect the power stations and transfer to homes and factories