In this interactive object, learners test their knowledge of 14 geometric tolerance control symbols.
By Mike Cattelino
Students read about the edge-finder's parts and assembly, and view video clips of the tool in action.
Calibrating a Depth Micrometer
By Barbara Anderegg
In this learning activity you'll review the steps for calibrating the length of depth micrometer measuring rods.
Series-Opposing Zener Diodes
By Terry Bartelt
In this animated and interactive object, learners examine the voltages that develop across two series zener diodes, which are connected in opposite directions, when DC and AC voltages are applied across them. A brief quiz completes the activity.
In this learning activity you'll determine the voltages that can be topped off of a multi-resistor voltage divider that has one main power source.
By Lynette Teal
Learners examine the main characteristics of the four financial statements required in accounting: the income statement, the owner's equity statement, the balance sheet, and the statement of cash flow.
Mathematical Expression of an AC Sine Wave
By Patrick Hoppe
Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.
Phase Relationships Between Line-Neutral and Line-Line Voltages
By Michael Gradinjan, Terry Fleischman
Learners view a demonstration showing that line-neutral voltages and line-line voltages are not in-phase with each other, but have a definite 30-degree relationship.
Total Impedance for Series-Parallel Circuits Using Complex Numbers
Students follow the steps for finding the total impedance for a series-parallel circuit. Several examples are given.
Total Impedance for Series-Parallel Circuits Using Complex Numbers: Practice Problems
Students solve five problems to determine the total impedance of a series-parallel circuit. Immediate feedback is given.
Vi Text Editor: Command Mode
You'll become familiar with the syntax required to operate the Vi text editor while in command mode.
Surface Area of a Frustum of a Cone
You'll practice calculating the surface area of a frustum of a right circular cone.
Hacker Categories and Terminology
You'll be introduced to categories of attackers who target computer systems and networks.
Creative Commons Attribution-NonCommercial 4.0 International License.
Learn more about the license »
Give your new group a name.