The student reads about the parts of a pipe/tubing bender and later identifies them in an interactive review.

In this animated object, learners study the operation of a linear voltage differential transformer. A brief quiz completes the activity.

Learners read an analogy comparing an electrical transformer to mechanical gears.

Students read descriptions of the voltage, current, and turns ratios of the primary and secondary coils for a transformer in this interactive lesson.

In this animated activity, learners see that changing the resistance value of the load in the secondary of a transformer causes current to vary in the primary.

Students solve practice problems on voltage, current, and impedance matching. Examples precede the problems.

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 examine how the load resistance connected to the secondary coil of a transformer affects the primary current. A brief quiz completes the activity.

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

Students read an introduction to transformers that includes schematic symbols, turns ratios, mutual inductance, and the coefficient of coupling.

This interactive learning object updates students on the former country of Yugoslavia. A map is included.

Students follow the steps that are required to select a transformer with the proper ratings. Voltage, frequency, current, and KVA are considered.

Learners view animations and video clips showing how power is transmitted from one energized coil to another.