E-Grid 2 WK 3 D1

The three-phase AC induction motor is the most common electrical motor

used because it is rugged, reliable, and efficient. Three-phase induction

motors are very simple in design, consisting of a ______ (the stationary part)

and a rotor (the rotating part).

It is an awesome trait of the power delivery system to know that all of the

generators that are connected to a regional transmission network are all at

the same angle of rotation at _____ ______ _______.

When the ______ _______________ is

maintained throughout the system, three-phase motors will spin in the same

direction as the generator.

The three-phase AC induction motor is the most common electrical motor

used because it is rugged, reliable, and efficient. Three-phase induction

motors are very simple in design, consisting of a stator (the stationary part)

and a _________(the rotating part).

If a generation unit experiences a mechanical problem, or if for any other reason a

generator begins to ____ __ _____in rotation, protective equipment just outside

the generating station automatically opens.

As the magnetic field of the ______

rotates, the _______follows in the same

direction.

If the

phase sequence is changed, rotation will remain unchanged.

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