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 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 view a graphical explanation of how the motor condition (unloaded, 50 percent loaded, fully loaded) affects the phase between voltage and current, the current draw from the AC supply, the amount of power consumed, and the power factor.

The student reads about the procedures for loading punches and turning a die block in an up-acting hydraulic press brake. The safe handling of press brake tooling is also illustrated.

Students follow steps to determine the number of inputs that can be driven by a specific IC. A sample problem is given.

The learner will understand how a zener diode maintains a constant voltage as the resistance values of a load change.

Students read about the concepts of saturation and cutoff. They view diagrams that illustrate the interaction of the load line and the family of curves.

The learner calculates the resultant of multiple forces acting in a concurrent, coplanar load condition.

Learners use the National Electrical Code to determine the size of a motor overload protection device.

Students complete 10 practice problems. These deal with the determination of series current, zener current, and load current, and if the zener diode is operating in the breakdown region.

Using the principle of Pascal's Law, the learner will interpret the gauge readings in a hydraulic system to determine when the system is operating properly under various load conditions and when there is a defect.

In this animated activity, learners examine the circuitry in a DC variable speed drive that keeps the motor running at a constant speed as the load varies.

In this screencast, learners examine the internal structure of an unloading valve. This learning object includes a video clip demonstrating the use of an unloading valve in a metal stamping application.

Learners are introduced to the maximum power transfer theorem. Examples show the load as it varies and the results are graphed.

Students read about the operation of the zener diode. This activity includes the ideal zener, the breakdown operation, the calculation of series, and zener and load current.

Learners consider the changes inside a series motor that could cause it to break apart if the load was disconnected. A quiz completes the activity.

The effect of connecting voltage sources in parallel to increase amperage to a load is presented.

In this animated activity, learners observe how pressure values throughout a hydraulic system are developed based on pump pressure and the size of the load.

In this learning activity you'll explore the effect of connecting voltage sources in series to increase voltage applied to a load.

Students read an explanation of power factor correction. Examples of both inductive and capacitive loads are given.