Science 10: Simple Electric Motor and Generator

What is the main function of a simple electric motor?

• Convert mechanical energy into electrical energy

• Convert electrical energy into mechanical energy

• Generate solar power

• Store magnetic fields

Which of the following is not a part of a simple electric motor?

• Commutator

• Turbine

• Brushes

• Armature

What is the source of the magnetic field in a simple electric motor?

• Battery

• Armature

• Permanent magnet or electromagnet

• Brushes

In a generator, which energy transformation takes place?

• Mechanical to electrical

• Electrical to mechanical

• Chemical to electrical

• Thermal to electrical

What part of the electric motor reverses the direction of current in the coil to maintain rotation?

• Magnet

• Commutator

• Armature

• Shaft