In this learning activity you'll review the steps for calibrating the length of depth micrometer measuring rods.

Learners examine the circuitry in a DC variable speed drive that protects the rectifier diodes and motor windings from being damaged due to excessive current.

In this animated print reading exercise, the learner calculates missing dimensions and identifies surfaces on projected views.

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

Students examine how to interpret resistor color code bands to determine resistance values and tolerance ranges. This interactive learning object has audio content and includes exercises.

In this highly interactive and animated object, learners examine the VAT-40 battery starting and charging system tester and study how the tester is used to diagnose vehicle starting system problems. This object has audio.

Learners read how to use a lumber rule to quickly and accurately estimate board feet. They then use virtual samples to practice the process.

In this interactive object, the learner reads an explanation of how various shielding gases are used in GMAW and FCAW. An exercise completes the activity.

In this animated object, learners examine how magnetic waves are transmitted as radio signals.

In this animated object, learners view a race of two boats as an example of how the derivative function of a PID controller shortens the time duration of an operation.

This document gives an overview of chuck maintenance.

In this animated object, learners examine the design of a ladder circuit that provides manual control to a water pumping system. Students also study modifications to the circuit as the complexity of the system increases.

Learners view a vector diagram for a series RC circuit and read information concerning the voltage across each component, the total voltage, and the phase angle.

In this animated and interactive object, learners calculate the area and centroid of a circle.

In this interactive and animated object, learners apply the Law of Sines to determine forces using a TI-86 calculator.

In this interactive object, learners examine the operation of an inverting operational amplifier through formulas, tables, and animated illustrations. A brief quiz completes the activity.

Learners read an explanation of how to connect two 7485 ICs to compare binary numbers by creating an 8-bit comparator. Diagrams and charts are presented.

In this animated activity, learners examine how ground fault circuit interrupters work and why they are an important safety feature.

In this interactive object, learners examine standard and metric thread specifications used in engineering drawings. In a brief quiz, they identify various internal and external thread representations.

In this animated object, students view diagrams of the UJT as it is used in the relaxation oscillator circuit. Waveforms illustrate how the circuit operates through several time periods.

Students read an explanation of power factor in a power distribution and how it can be improved by using a power factor correction capacitor bank. A brief quiz completes the activity.

Students view the parts and movements of a combustion engine in this animated activity. Each part is described.

In this animated object, learners read the dimensions of the different types of vehicles typically considered in highway design.

Learners view an animation showing how the volume of a given quantity of gas varies directly with its temperature.

In this learning activity, learners will learn to calculate the average voltage produced by half-wave and full-wave rectifiers.