Learners examine the wiring of the primary components of the three types of DC motors, series, shunt, and compound. The operational characteristics of each type of motor are described. A quiz completes the activity.

Learners review Kirchhoff's Voltage Law and work six practice problems. Feedback is given.

In this interactive learning object, the learner practices sizing a tank-type water heater for one- and two-family residences, townhouses, and apartments with individual water heaters.

In this document you'll review photos of different types of drilling tools.

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

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

Learners read how an inductor opposes a current change when it begins to energize and when it begins to de-energize. A short quiz completes the activity.

In this learning activity you'll examine how electronic converters convert between analog voltages and proportional digital signals.

Learners compare animations of analog and digital data signals. A short quiz completes the activity.

Converting hexadecimal, binary and decimal numbers.

Converting hexadecimal, binary and decimal numbers.

Digital Divide - Internet and Net Geners of the Net generation.