In this animated activity, learners study how stator poles create a rotating field in a three-phase AC motor as a three-phase AC voltage is applied.

In this 3D animated object, learners examine the way in which a three-phase generator produces three sine waves with three armature coils. A quiz completes the activity.

Using a memory shortcut for calculations, the learner determines line and phase values of current in a three-phase AC configuration. Practice problems complete the activity.

Learners view wire feed power sources ranging from 110-volt, single phase units to 460-volt, three-phase units. A description and photos of each are provided.

The learner will understand the operation of motor control circuits used to start and stop three-phase motors.

In this interactive object, learners follow steps to find phase voltages in a partial three-phase power distribution circuit.

In this learning activity you'll discover the disconnected nature of the HTTP request-response model including some methods of persisting state and the security implications.

Learners consider the changes inside a series motor that could cause it to break apart if the load was disconnected. A quiz completes the activity.