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This lecture, published by Columbia Gorge Community College, examines "balanced 4 and 3 wire Y configurations in 3 phase AC systems." The recording runs 23:10 minutes in length and part two is available to view separately.

This lecture, published by Columbia Gorge Community College, examines "balanced 4 and 3 wire Y configurations in 3 phase AC systems." The recording runs 19:19 minutes in length and part one is available to view separately.

Course Description: This course, developed by Bridgerland Technical College, teaches students basic electrical theory, including electrical fundamentals, basic electricity, basic electrical circuits, electrical systems and protection, alternating current, relays, transformers, and grounding and...

In this interactive object, students explore the basic elements and common terms associated with dimensions and leaders in engineering drawings. A quiz completes the activity.  

This self-study course from the Fiber Optics Association covers basic fiber optics. Intended for either those already working in fiber optics, or those just getting started, this course covers an introduction to fiber optics, how it's used in communications, how a fiber optic link transmits signals,...

This video, provided by Columbia Gorge Community College, is the first part of a two part lecture that discusses basic programmable logic controller (PLC) instructions. The main objective of the lecture is to "introduce the make, break, and output enable instructions for PLC programs." This lecture...

This video, provided by Columbia Gorge Community College, is the second part of a two part lecture that discusses basic programmable logic controller (PLC) instructions. The main objective of the lecture is to "introduce the make, break, and output enable instructions for PLC programs." This lecture...

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.

In this highly interactive object, learners associate basic line types and terms with engineering drawing geometry. A quiz completes the activity.

This video recording, from Excelsior College, takes users through a blueprint simulation. The simulation involves "an electrician troubleshoot[ing] a defective compressor motor that will not start." Appropriate blueprints are selected "that must be referred to while performing the troubleshooting...