Learners view an animation of a counterbalance valve in operation and examine the valve’s internal structure.

Learners study the theory of operation for a ratio pyrometer that measures temperature. A short quiz completes the activity.

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 animated object, learners examine how the rotation of an induction AC motor's armature slips behind the synchronous rotational speed of the stator's field to create magnetic fields. These fields interact and produce torque. A quiz completes the activity.

Learners review the VDR and work six problems. Immediate feedback is given.

Students read about the three main classes of amplifiers and view graphical representations of the collector current and circuit.

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.

Learners analyze a base-biased npn transistor circuit. A "help" screen is available.

Learners analyze a base-biased npn transistor circuit. A "help" screen is available.

Introduction of transistor

This game comprises the words from History and generations of Computers.