Methods of Producing Electricity
By Terry Bartelt
In this learning activity you'll review the six different ways in which electricity is produced: chemical, friction, heat, light, magnetism, and pressure.
AC Voltage Conversions
In this animated object, learners examine the formulas used to convert peak, RMS, average, and peak-to-peak AC voltages. A brief quiz completes the activity.
In this animated object, learners examine the operation of a demultiplexer along with the data output and select lines. A brief quiz completes the activity.
Calculating Blank Size for Rolled Sheet Metal
By Dave Hoffman
In this interactive object, students read how to calculate the blank size for cylinders in a three-roll pinch roller. A calculator is required for the brief quiz that completes the activity.
The Induction Motor Slip
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.
Analog Position Control
In this animated object, learners examine an analog closed-loop feedback system that uses potentiometers to control the position of a gear rack.
Difference Op Amp
Learners examine the fundamental operation of a difference operational amplifier. A brief quiz completes the activity.
Conductors, Insulators and Resistors
In this animated activity, learners examine why various materials are conductors, insulators, or resistors of current. A short quiz completes the learning object.
Shorts Affecting Current in a Series Circuit
In this learning activity you'll review how a short affects current flow and voltage in a series circuit.
By Barbara Anderegg
In this learning activity you'll examine how a sine bar is used to measure angles.
Active Region Operation of a Transistor
Learners view the operation of an NPN transistor in the active region.
Brain Exercise: Visualization #3
By Glenn Sokolowski
Learners develop 3D visualization skills by examining front, side, and top orthographic views of objects. Using this information, students select the corresponding isometric view of each object.
The Frequency of an AC Generator
By Walter Hedges, Terry Bartelt
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.
Ohm's Law Practice Problems #3
By Patrick Hoppe
Learners review Ohm's Law and then work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and are asked to solve for the third.
Series-Parallel Circuit Analysis: Practice Problems Circuit 1
In this interactive object, learners analyze a series-parallel DC circuit problem in a series of steps. Immediate feedback is provided.
Voltage Measurements of a Half-Wave Rectifier
In this animated lesson, students view how an oscilloscope and a DC voltmeter measure the voltage of a half-wave rectifier.
This learning activity describes the physical properties that affect the inductance, in henries, of an inductor.
The Generation of Alternating Current
This learning object describes the production of an alternating current in a generator with a single-loop armature. An illustration of how a sine wave is produced is shown through animation.
Learners read a description of inductors and view examples of inductors in series and in parallel.
Maximum Power Transfer
Learners are introduced to the maximum power transfer theorem. Examples show the load as it varies and the results are graphed.
Ziegler-Nichols Continuous Cycling Tuning Method
In this animated and interactive object, learners follow steps to perform the process identification procedure for the Ziegler-Nichols Continuous Cycling Tuning Method. A short quiz completes the activity.
Simple Pneumatic Circuits
Learners examine the operation of five pneumatic animated circuits that use directional control valves, pilot lines, check valves, needle valves, and cylinders.
The Transistor Switch
The learner views the operation of a transistor switching from saturation to cutoff. A brief quiz completes the activity.
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.
In this animated object, learners examine how PLC up/down-counters are used to control an automated parking lot gate.