Hydropower: The Fascinating Facts

What percentage of the world's electricity is produced by hydropower plants?

• 10%

• 24%

• 50%

• 78%

Which hydroelectric project is currently the largest in the world?

• Itaipu Dam

• Three Gorges Dam

• Niagara Falls

• Dinorwig

What is the purpose of a dam in a hydropower plant?

• To store water

• To generate electricity

• To control water flow

• To create a reservoir

What is the main component that moves due to the flow of water in a hydroelectric power station?

• Intake

• Turbine

• Generator

• Transformer

Which type of turbine is commonly used in hydropower plants?

• Francis Turbine

• Pelton Turbine

• Kaplan Turbine

• Crossflow Turbine

What happens inside the generator of a hydroelectric power station?

• Water is stored

• Electricity is produced

• Water pressure is built up

• Water is released

What is the purpose of a transformer in a hydroelectric power station?

• To convert water to electricity

• To convert electricity to water

• To increase the voltage of the current

• To decrease the voltage of the current

How is the electric current taken out of the hydroelectric station?

• Through power lines

• Through pipelines

• Through the outflow

• Through the generator

What is the alternative method of hydroelectric power generation mentioned in the text?

• Solar power

• Wind power

• Pumped storage plant

• Nuclear power

What is the advantage of a pumped storage plant?

• It can generate electricity at times of greatest demand

• It requires less water

• It is cheaper to build

• It produces more power