Lesson 11-9: What is a generator?

What kind of electric current is induced when a loop of wire turns in a magnetic field?

Alternating current is produced when a loop of wire turns in a magnetic field.

What is a generator?

An generator is a device that changes mechanical energy into electrical energy.

What happens when a loop of wire cuts magnetic lines of force?

As the wire moves across the magnetic field, it cuts the magnetic lines of force.

What causes a turbine to turn?

Moving water to turn a turbine may come from a dam or river.

What supplies the mechanical energy in a generator?

The mechanical energy for generator is supplied by turbines, a turbine is a large wheel that is turned by moving steam or water.

Name three sources of energy that are used to make steam for turbines.

Steam can be produced by energy such as coal or oil, or from nuclear energy.