Ziegler-Nichols Reaction Curve Tuning Calculations

By Terry Bartelt

Learners study the mathematical calculations used to determine the proper PID values to be entered into a controller using the Ziegler-Nichols Reaction Curve.

Ziegler-Nichols Reaction Curve Process Identification Procedure

Learners follow the steps required to perform the Ziegler-Nichols reaction curve process identification procedure.

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.

Ziegler-Nichols Continuous Cycling Tuning Calculations

Learners examine the formulas that are used to determine the proper PID values to be entered into a controller using the Ziegler-Nichols Continuous Cycling Tuning Method.

Zener Diode Voltage Regulation

In this animated and interactive object, learners examine how changes in applied voltage affect the current and voltages in a zener diode voltage regulation circuit. A short assessment completes the activity.

Wound-Rotor Motors

Learners study animation showing the operation of an AC wound-rotor motor with its external starting resistors. A short quiz completes the activity.

Work and Power

By James Bourassa, John Rosz

Learners examine the formulas for calculating work in ft-lb units and power in ft-lb/min. units. Practice problems are included.

Word Problems in Basic Mechanics

Learners solve word problems involving basic mechanical principles such as torque, horsepower, work, and power. Students who have problems with a particular word problem may try it again with a different set of numbers.

Wires

Students examine the four factors that affect resistance of a wire: temperature, length, diameter, and the type of material from which it is made. A short quiz completes the activity.

Who Wants to Be an "Engin-aire?" -- Nonferrous Metals and Alloys

By Bryan LaVigne

Learners answer questions about nonferrous metals and alloys using a game show format. Immediate feedback is provided.

Who Wants to Be an "Engin-aire?" -- Heat Treatment

Learners answer questions about the heat treatment of metals using a game show format. Immediate feedback is provided.

Who Wants to Be an "Engin-aire?" -- Ferrous Metals and Alloys

Learners answer questions about ferrous metals and alloys using a game show format. Immediate feedback is provided.

Wheatstone Bridge Application

In this animated activity, students view how the Wheatstone bridge is used to activate a temperature alarm. A short quiz completes the lesson.

Wheatstone Bridge

Students follow step-by-step directions on how to make mathematical calculations for a Wheatstone bridge.

What Is Torque?

Learners read a description of torque and study the factors that cause its magnitude to change. A brief quiz completes the activity.

What Is Electricity?

The learner studies how electrons travel from one atom to the next. Examples demonstrate how voltage is created by the use of a battery or through magnetism. A quiz completes the activity.

What Is Current?

By Tim Tewalt, Patrick Hoppe

Learners study an animation that shows how a battery charge reduces over time and when varying resistance values are placed in a series circuit. Ten review questions complete the activity.

Weight-Volume Relationships: Saturated Unit Weight

By Steve Whitmoyer

Students read how to determine and calculate the saturated unit weight for a given sample of soil or aggregate, based on the weight-volume relationship. Practice problems complete the activity.

Weight-Volume Relationships: Dry Unit Weight

Students read how to determine and calculate the dry unit weight for a given sample of soil or aggregate based on the weight-volume relationship.

Weight-Volume Relationships: Density

Students read an explanation of the use of weight-volume relationships and practice calculating density.

Weight-Volume Relationships: Unit Weight

Students read about the concept of unit weight relating to the 3-phase diagram and perform calculations.

Weight- Volume Relationships: Saturated Density (Metric)

Students read how to determine and calculate the saturated density for a given sample of soil or aggregate, based on the mass-volume relationship. Practice problems complete the activity.

Weight- Volume Relationships: Porosity

Students read how to determine and calculate the porosity for a given sample of soil or aggregate, based on the weight-volume relationship.

Waveforms of an SCR Circuit

Learners view waveforms at various locations of an SCR circuit controlling the intensity a light bulb. The waveforms are shown when the light is dim, at medium brightness, and at full brightness. A brief quiz completes the activity.

Waveforms of a Triac Circuit

Learners observe the waveforms in a circuit in which a triac controls the brightness of a lampâ€™s light. A brief quiz completes the activity.