National Grid Flashcards
1
Q
What 2 types of transformers are in The National Grid?
A
- Step up transformer
- Step down transformer
2
Q
Electricity enters your house at what potential difference?
A
230 V
3
Q
What does a step- up transformer do?
A
- Increase voltage
- Decreases current
- Less heat loss
- More efficient
4
Q
What does a step- down transformer do?
A
- Decrease voltage
- To a safer value
- To ensure nothing sets on fire with high voltages
5
Q
Q.)
Explain how using 230 000 V instead of 23 000 V for the cables across the country makes energy transfer more efficient
A
- At high current, energy is disipated through wires.
- Increase P.D = decrease current so less energy disippated.
6
Q
What are the steps of electricity being generated in a power station?
A
1.) Fuel burnt to boil water
2.) Steam moves turbine
3.) Turbine moves generator
4.) Generator produces electrical energy, transferred in power cables
7
Q
What is the national grid?
A
- The National Grid is a system of cables and transformers linking power stations to consumers.
8
Q
What is the national grid made up of?
A
- National grid made up of cables and transformers.
9
Q
What is transferred from power stations to consumers using The National Grid?
A
- Electrical power is transferred from power stations to consumers using the National Grid.
