Friday could be a wild day of trading on Wall Street. Here's why Taylor Swift's Christmas card is here—and this is what it ...

Abstract: Though annotations are integral part of symbols in drawings, due attention is yet to be given for their identification, interpretation, and storage. A reconstructed drawing from the vector ...

Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...

Abstract: Frequency response analysis (FRA) is a popular tool to detect transformer winding deformation faults. It has been recently used to diagnose the winding inter-turn short circuit fault of the ...

Learn how to calculate electric current and potential in two connected wires! This guide walks you through the physics behind series and parallel circuits, helping you understand voltage drops and ...