In this animated activity, learners examine why various materials are conductors, insulators, or resistors of current. A short quiz completes the learning object.

Learners examine the complex number function to convert real and imaginary coefficients into a complex number.

Learners follow an animated test procedure to determine if the parts of a hydraulic pump are worn.

In this animated object, learners study how the internal parts of an AC synchronous motor interact with magnetic fields to cause rotation. A short quiz completes the activity.

Learners study animation showing the operation of an AC wound-rotor motor with its external starting resistors. A short quiz completes the activity.

Learners view animations showing how to change the connections to cause a DC motor to reverse its rotation. A short quiz completes the activity.

The learner will be able to represent steady-state AC sinusoidal signals using phase vectors, which will lead to a simplified technique of analyzing AC circuits in a very similar way that we analyze DC circuits.

In this interactive object, learners solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated by each resistor.

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

In this animated object, learners examine the operation of a hydraulic relief valve and its internal components. A brief quiz completes the activity.

In this animated and interactive object, learners examine a depiction of how force is multiplied by a larger cylinder when pressure from a pump is applied to a smaller cylinder. A short quiz completes the activity.

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 the operation of a ladder circuit in which coils on one rung control contacts in other rungs.

In this animated and interactive object, learners use a memory device to identify NPN and PNP transistors. Learners also examine how much the transistors turn on when the voltage applied to the base is varied.

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

The learner will represent very large and very small numbers in engineering notation.

In this learning activity you'll review the operation and schematic symbols of various types of switches and push buttons used for electronic circuits.

This learning activity uses a water pressure analogy to present the concept that voltage pressure is required to cause current flow.

Learners read a description of the knob controls, pushbuttons and output terminals on the Wavetek Model 25 signal generator.

Learners view animations showing methods of measuring the pH level of a solution using litmus paper and electronic instruments.

Students view the steps for multiplying complex numbers in Excel.

Studies show that more than 75 percent of all hydraulic system failures are a direct result of unclean oil. In this interactive object, learners examine the three primary types of hydraulic system filters. A brief quiz completes the activity.

In this animated learning object, students examine the addresses of PLC elements and how they pertain to I/O connections and internal memory files.

Learners study animation showing the operation of cumulative and differential DC compound motors. A short quiz completes the activity.

The operation and characteristics of an absolute optical encoder used in automation applications are presented.