High School Physics

Applications of generators and motors

In this post, we will briefly discuss the different applications of generators and motors.

Applications of generators and motors in cars

Alternator in cars

A car contains an alternator that charges its battery and powers the car’s electric system when its engine is running. Alternators have the great advantage over direct-current generators of not using a commutator, which makes them simpler, lighter, less costly, and more rugged than a DC generator.

Starter motor in cars

A car also contains a DC electric motor, the starter motor, to turn over the engine to start it.
A starter motor consists of the very powerful DC electric motor and starter solenoid that is attached to the motor. A starter motor requires a very high current to crank the engine, that’s why it’s connected to the battery with large cables.

More applications of generators and motor are listed below:

Applications of Generators

  • car alternator
  • bicycle dynamo
  • hybrid electric vehicle (HEV) drive systems
  • aircraft auxiliary power generation
  • wind generators
  • high-speed gas turbine generators

Applications of Motors

  • in electric drills
  • in washing machines
  • in mixers
  • in dentist drills
  • in fans
  • the starter of a car
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