Types of Motors II

2. A switch that uses a centrifugal action to disconnect the start windings from the circuit.
3. An electronic device in a motor circuit that is used to control motor speed for variable-speed motors.
4. Circuit in which the current leads the voltage.
7. The rotating or moving component of a motor, including the shaft.
8. The speed at which the variable frequency drive’s power device switches the waveform’s positive and negative halves on and off is referred to as the switch frequency or carrier frequency.
11. An alternating current motor where the rotor turns from induced magnetism from the field windings.
13. The region of a magnet towards which the lines of magnetic induction converge (south pole) or from which the lines of induction diverge (north pole).
14. A two wire Alternating Current (AC) power circuit.

1. This is the voltage-generating effect of an electric motor’s rotor turning within the motor.
3. A compressor starting devices which are variable resistors that vary their resistance when the surrounding temperature changes.
5. An electrical device activated by a change in current flow.
6. The minimum back electromotive force (BEMF) that the potential relay coil must experience or its armature will drop out and the contacts between terminals 1 and 2 will close.
9. The end structure of an electric motor that normally contains the bearings and lubrication system.
10. An electrical storage device used to start motors (start capacitor) and to improve the efficiency of motors (run capacitor).
12. The amount by which the current leads or lags the voltage.
15. Cycles per second.