Electric Motors Flashcards
What are the two groups are electric motors?
AC
DC
What is the purpose of the frame?
Support the windings and to provide magnetic circuit
Direct current is a flow of electrical current in one direction. Dc motors convert electrical energy into _______?
Mechanical energy
What is a field pole?
Support the field windings and act as a magnetic path between frame and armature
Armature assembly see picture
Bearings in an electric motor do what?
Support the weight of the armature and provide a surface of minimal resistance to rotating motion
Dc motor designs
AC motors use alternating current to produce?
Mechanical energy
Two general categories of AC motors
Ac three phase
Ac single phase
Three types of 3 phase motors?
Squirrel cage induction
Wound rotor
Synchronous
Squirrel cage and _______ are most commonly used
Wound rotor
Three types of single phase AC motors
Split phase
Capacitor-started
Repulsion
