How Electric Motors Works

How Electric Motors Works

By Romelyn Belmonte

Multiple Choice

It is most often a permanent magnet or row of magnets lining the edge of the motor casing.

• Armature

• Stator

• Rotor

• Commutator

• Brushes

Multiple Choice

It is the moving part of the electric motor. It turns the shaft that delivers the mechanical power.

• Armature

• Stator

• Rotor

• Commutator

• Brushes

Multiple Choice

It is a mechanism used by your motor to switch the input of most DC motors and certain AC motors.

• Armature

• Stator

• Rotor

• Commutator

• Brushes

Multiple Choice

They send electrical current to the commutator and are typically made of graphite.

• Armature

• Stator

• Terminals

• Commutator

• Brushes

Multiple Choice

They are the locations where the battery attaches to the motor and sends the current to spin the rotor.

• Armature

• Brushes

• Terminals

• Commutator

• Armature

How does electric motor work?

Parts... functions... Interaction...​

Multiple Choice

Which part provides the permanent magnetic field?

• Rotor

• Stator

• Brushes

• Terminals

Multiple Choice

Which of the following may happen if there is no commutator?

• The rotor will reverse its spin.

• The stator will collapse.

• The rotor will be attracted to the stator.

• The rotor will stop spinning.

Multiple Choice

Which will increase the power of the electric motor?

• Increase the number of solenoids.

• Use batteries instead of outlets.

• Use lower current.

• Use a heavier core.