What is a dynamo?
A rotating electrical machine that converts mechanical energy into electrical energy or electrical energy into mechanical energy.
A dynamo could function as
A dc generator or dc motor
What is a generator?
A rotating electrical machine that converts mechanical energy into electrical energy.
What does an alternator do?
Creates alternating current when being rotated by a mechanical means.
What is another name for an alternator?
Synchronous generator
What does a prime mover do?
Supplies the rotational mechanical force to turn the rotor of the alternator or generator.
What are some examples of prime movers?
Turbines powered by falling water, steam or wind
Diesel engines
Natural gas engines
What is a motor?
A rotating machine that converts electrical energy into mechanical energy.
What is the stator?
The stationary part of an electrical machine.
What is the rotor?
The rotating part of an electrical machine.
What is the purpose of a field winding?
To create magnetic flux.
Where are the field windings located on a dc machine?
On the stator.
Where are the field windings located on an ac machine?
On the rotor.
What is the purpose of the armature winding in a dc generator?
It is where voltage develops.
What is the purpose of the armature winding in a dc motor?
It is where torque develops.
In a dc dynamo, where are the armature windings located?
On the rotor.
Where are the armature windings located on an ac machine?
On the stator.
Where the slip rings located on an ac machine?
On the shaft.
What is another name for split rings?
Commutator