Ziegler-Nichols Reaction Curve Tuning Calculations (Screencast)
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 (Screencast)
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 (Screencast)
By James Bourassa, John Rosz
Learners examine the formulas for calculating work in ft-lb units and power in ft-lb/min. units.
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? (Screencast)
Learners read a description of torque and study the factors that cause its magnitude to change.
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 lamp’s light. A brief quiz completes the activity.