Electric Motor and Generator
Cards (10)
- Two Types of Motor:
- Simple Motor - works by placing an electromagnet between a pair of permanent magnets.
- Complex Motor - typically consists of three or more different electromagnets and at least three permanent magnets
- Electric Motors - device that converts electrical energy to mechanical energy.
- Mechanical Energy (ME) - sum of kinetic energy and potential energy. An object possesses mechanical energy if it has the ability to do work.
- Parts of Motor:
- Commutator - consists of a pair of plates attached to the axle and provides two connections for the coil of the electromagnet.
- Armature or Motor - this consists of a set of electromagnets made up of copper thin wire.
- DC Power Supply - source of power.
- Magnetic Field - it consists of the motor housing and two curved permanent magnets.
- Axle - contains the armature and commutator.
- Brushes - consist of two pieces of springy metals that contact the commutator.
- How does an electric motor work?The electric motor uses magnets to create motion. Opposite poles attract, and like poles repel. These two forces cause the rotational motion of an armature that affects the magnetic field to create an electric current.
- Application of Motor:
- Medical (Equipment)
- Entertainment (Equipment)
- Medium (Industrial)
- Fitness (Equipment)
- Commercial (Device)
- Generator (Alternator) - a device that converts mechanical energy into electrical energy.
- Two Types of Generators:
- AC Generator - alternating current generator, single coil of wire, uniform field.
- DC Generator - direct current generator, rotating loop of wire, varies in value but not in direction.
- Application of Generators:
- Electric Motor - converts electrical energy into mechanical energy.
- Electric Generator - converts mechanical energy into electrical energy.
- Generators are useful appliances that supply electrical power during a power outage and prevent discontinuity of daily activities or disruption of business operations.