This learning object introduces the three approximations of a diode.

Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.

In this simulation activity, an electrician will troubleshoot an AC motor that is overheating. Before accessing blueprints and then using a multimeter to find the fault, the learner will follow safety protocols by following lock-out tag-out procedures and then suit up with appropriate (PPE) personal protection equipment.

Students read how to use the DEGREES() function to convert radians to degrees.

In this animated object, learners examine why and when the Kelvin scale is used. A brief quiz completes the activity.

In this animated object, learners study how displacement level sensors are used to measure the level of liquid in a tank.

In this animated object, learners observe the operation of a J thermocouple with a cold junction. A table is used to convert the voltage it produces to a corresponding temperature. A brief quiz completes the activity.

Learners study the process of mathematically converting temperatures between the Fahrenheit and Celsius scales. A short quiz completes the learning object.

Learners study the effect of reflected and transmitted energy on the measurement of emitted energy by a non-blackbody. A short quiz completes the activity.

Comprehension Check Game

Have some fun, test your troubleshooting skills on cooling systems.

Weather and Climate Test Review

Review types of heat transfer