Magnetic Basics
What is the Left-hand coil rule?
The ability of one coil to create voltage in another is called what?
Induce
A motor's starting Torque is also known as this.
Locked-rotor torque
A motor's nameplate voltage rating is this type of voltage.
Optimal voltage
The motor part that usually shows proper wiring connections.
Nameplate
What is Permeability?
In a motor, this force is used to convert Electrical energy into mechanical rotation
Electromagnetism
Motor power is rated in these two units
Horsepower or Watts
Motor nameplate electrical ratings include voltage, current, and frequency plus this factor.
Phase
This Torque allows a motor to overcome inertia and start turning.
Locked-rotor torque
Electromagnetism is considered this type of magnetic force because it only exists when current flows.
What is Temporary?
This ring in a squirrel cage rotor provides a short circuit path for current
Shorting Ring
The fixed part of an alternator that supplies the magnetic field through windings
Stator
When two equal coils are in parallel, the total resistance is what fraction of one coil?
One Half
Three-phase AC power is generated by rotating coils through this.
Magnetic Field
A motor's rotor is mounted on this, which transfers power to the load.
Shaft
The insulation class with the best heat tolerance for drives
Class H
The mechanical design info includes NEMA letter, enclosure, bearings and this.
Frame size
Motor power is most often rated in this unit in the U.S. and another globally.
Horsepower / Watts