direct current

This post ends with a quiz and more than 49 $5 Starbucks card winners for correct answers. Why the quiz for this post? Because the subject is power factor. Most descriptions of power factor remind me of riding the NYC subway many years ago before passengers buried their faces in their smartphones, which did not yet exist. Instead, choices included looking at the floor or the ceiling, like riding an elevator. God knows you don’t want to make eye contact with the person sitting across from you. At the ceiling were ads for the most socially undesirable products imaginable: cures…