In this animated object, learners examine the signals produced by sourcing and sinking two-wire sensors. A brief quiz completes the activity.

Learners study the descriptions of the three words in a PLC timer: EN, DN, and TT. They then test their knowledge in a brief quiz.

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

In this video, you’ll explore how to set up the chuck, face your part using a left-handed and right-handed tool, center drilling, and facing the part to length.

In this screencast, learners examine the physical facets that determine the value of a capacitor.

Students view a video that shows the correct methods for starting a GTAW weld pool and adding filler. It focuses on the two problems that many students have – adding filler too soon and angling the torch so that the filler melts prematurely on the filler rod. Note: This activity is 3.6 mb.

Students complete a sample exam for DC/AC I. It provides an overview of the material presented in the course.

Learners examine the correct method for calculating complex reciprocals. The solution for total impedance of a parallel circuit in rectangular form is shown.

In this simulation, learners follow 10 steps to program a job to saw metal. This activity includes a video clip.

In this animated object, learners examine how aeration develops in a hydraulic pump. A brief quiz completes the activity.

In this interactive object, learners vary the value of the resistance to see how it affects current. Example problems are included.

In this animated activity, learners examine how residual magnetism causes magnetic hysteresis.

Students view the layout and operation of a digital logic probe.

In this animated object, learners examine how various types of positive and non-positive displacement hydraulic pumps work.

Learners examine how fluid enters the inlet of a hydraulic pump because of atmospheric pressure and how pressure is created at the pump’s outlet. This object includes audio.

In this animated object, learners study the problems that develop if the scan time of a PLC is too slow.

Students read the terms associated with the Bipolar Junction Transistor (BJT) . They also view formulas for dc current and voltage.

The explanation and use of timing diagrams used in digital electronics to graphically show the operation of various circuits are given.

In this interactive learning object, students read about the voltage and current parameters commonly found on a data sheet. A brief quiz completes the activity.

The learner will understand and be able to apply the common welding variables of the GMAW process.

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

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.

By playing a game of tic-tac-toe, a student can review what happens to currents and voltages throughout a parallel LC circuit when the applied frequency is increased above resonance.

This primer introduces the student to the correct method of using complex reciprocals in a TI-86 calculator. The solution of total impedance of a parallel circuit in rectangular form is shown.

Learners examine the connections of a DC motor and how the terminals are labeled. A matching exercise completes the learning object.