AC Capacitor: A Water Tank Analogy

By Roger Brown

In this animated lesson, students read an analogy comparing water in a "special" water tank to the current "flow" through a capacitor.

Basic Types of Dimensioning Used in Engineering Drawings

By Kelly Curran, Glenn Sokolowski

Learners examine the basic types of dimensioning including unidirectional and aligned systems, and linear, aligned, angled, arrowless, chain, datum, chart, tabular, radius, diameter, typical, and reference dimensions.

AC Current Flow

By Terry Bartelt

In this interactive and animated object, learners examine the flow of electron current into and out of hot and neutral sockets during each alternation of an AC waveform. A brief quiz completes the activity.

Orthographic Projection #1

By Glenn Sokolowski

In this interactive and animated object, learners examine orthographic projection and the Glass Box Theory. Front, side, and top view development is demonstrated with pictorial views of each object to help develop 2D to 3D visualization skills.

Designing a Ladder Diagram

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.

Norton's Theorem

By Patrick Hoppe

Learners follow the steps for reducing all of the elements of a complex circuit to a single current source and a single source resistance to create a simple circuit. Several examples are given for dc circuits. The conversion between Thevenin and Norton is also presented.

Abbreviations Representing Electrical Quantities

In this learning activity you'll identify abbreviations that represent quantities associated with electrical circuits.

Calculating DC Values of a Transistor Amplifier

In this animated activity, learners view the seven steps that are used to calculate voltage and current values throughout a common-emitter transistor amplifier.

Thevenin Voltage: Practice Problems

Students work five practice problems to determine the Thevenin voltage of DC circuits.

Series-Parallel DC Circuits Analysis

Learners follow a methodical approach for the dc analysis of series-parallel circuits.

The Superposition Theorem

The superposition theorem is explained as it relates to dc circuit analysis. Examples are given.

Basic DC Electrical Motor Construction

Learners examine the internal parts of a DC electrical motor and then text their knowledge in a drag-and-drop exercise.

AC Voltage Conversion Problems

By John Rosz, Terry Bartelt

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

The Edison Wire System

Learners read a description of the wiring configuration of a residential Edison Wire System, which consists of a transformer secondary circuit. The circuit supplies two 115-volt sources and one 230-volt source.

Three Phase Wye Transformer Calculations

By James Bourassa

In this interactive object, learners follow steps to find phase voltages in a partial three-phase power distribution circuit.

How to Read a Caliper

By Barbara Anderegg

In this interactive object, learners review how to read a caliper. They then test their skills with eight practice questions.

A Drill for Converting Binary Numbers to Decimal Numbers

By John Rosz

Students test their skill at converting binary numbers to decimal numbers. Immediate feedback is provided.

Total Resistance in a Parallel Circuit

The learner will apply the three formulas used to find the total resistance of three types of parallel resistor circuit configurations.

Indirect Measurement Instruments

By Kelly Curran

The learner will define indirect measurement, identify common indirect measuring tools, and select the proper measuring tool for the situation.

Fundamentals of a DC Motor

Learners study the interaction between the conductors of the stator and the armature inside a DC motor, which causes the shaft to rotate. A short quiz completes the activity.

Selecting a Proper Single Phase Transformer

By Gary Lindell, Terry Bartelt

Students follow the steps that are required to select a transformer with the proper ratings. Voltage, frequency, current, and KVA are considered.

The Basic Operation of a Diode

In this interactive and animated object, learners examine the operation of a semiconductor diode when it is forward and reverse biased. A brief quiz completes the activity.

The Electrostatic Charge of a Capacitor

In this animated activity, learners examine the conversion of electrical energy into an electrostatic charge within the dielectric material of a capacitor.

The Semiconductor Diode

In this interactive object, learners examine the PN sections of a diode and the diode's forward- and reverse-biased operations. A brief quiz completes the activity.

Basic Symbols Used in Engineering Drawings

Learners examine the drawing symbols used for counterbore, countersink, spotface, radius, diameter, and depth. In the quiz that completes the activity, they associate these symbols with machining applications.