Students read about the continent of Antarctica and view maps. A short quiz completes the activity.

In this animated object, learners examine the procedure used to determine the types of terminals on a single-pole, double-throw switch.

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.

Learners study the factors that determine the frequency of an AC generator, such as the rotational speed of the armature or the number of stator poles.

Learners study factors that affect the synchronous speed of an AC motor: the applied AC frequency and the number of stator poles.