Electricity Generation Flashcards
Step up transformer
Increases the voltage
Decreases the current
Has more turns in the secondary coil
Step down transformer
Decreases the voltage
Increases the current
More turns on the primary coil
High voltage transmission lines
Current flowing is small and travel long distance across country reduces cost and heat loss in cables
Furnace
Heats fossil fuels
Turbine
Steam rotates the blades (kinetic)
Generator
Kinetic energy to electric energy
Transformer
Used to change the size of voltage
Pylon
Carries transmission cables high above the ground
Transmission cables
Carry electricity with high voltage between power stations and homes
Cooling towers
Cools heated water before returning it to the condenser
Condenser
Steam to water
How a transformer is 100% efficient
Same power at beginning and end
Power =
Voltage x current
Explain how a generator produces electricity
A magnet is moved in and out of a coil of wire rotating in a magnetic field generating electricity
How to make more electric current
Use stronger magnet
Use a coil with more turns
Moving the magnet faster
Main stages of inside a power station
Fuel is burnt releasing heat (burner)
Heat turns the water into steam (boiler)
Steam is used to drive a turbine which is connected to a generator
Generator makes electricity when it moves
