generators and motors notes.notebook March 31, 2017
Electric Motors and Generators
Electric Generators• Use electromagnetic induction to change
mechanical energy into electrical energy.
• The electric current changes direction each time the coil makes a half turn. This is called alternating current.
Examples of Generators• Nuclear Power Plant uses thermal
energy from nuclear reactions to make steam, which powers a turbine.
• Power Plants burn coal or oil to make steam to drive the turbine.
• Wind wind power makes a magnet spin inside a coil of wire.
• Hydroelectric falling water turns the turbine.
generators and motors notes.notebook March 31, 2017
Transformer a device that increases or decreases the voltage of alternating current (AC).
Electric Motor• A device that changes electrical energy into
mechanical energy.
• All have an armature, a coil or loop of wire that rotates.
generators and motors notes.notebook March 31, 2017
Examples of Electric Motors• Fan
• What else can you think of?