A syndicated columnist is a writer who produces regular short articles, typically on a specific theme or subject, and sells them to a service that distributes them for her. The distribution normally spans many publications. Newspaper syndicated services normally distribute the material over a wide geographic regions.
Technically, VArs are the product of the rms voltage and current, or the apparent power, multiplied by the sine of the phase angle between the voltage and the current. Or in mathematical terms, the reactive power Q, (measured in units of volt-amperes reactive or VAr), is given by. Q = Vrms * Irms * sin(Ï)
A variable autotransformer is known generically as a Variac, which is what I've dissected here. The ratio of the primary to the secondary windings is variable, which means that the ratio of the secondary voltage to the primary voltage is variable.Variable Autotransformer Wiper. Vin Marshall. The inside of a variac looks like a giant rheostat.or some reason, I have three of them in my shop, and yes, one is just a book end. But they do have a useful purpose. Variac is a generic trade name for a variable autotransformer. If that doesn't help explain much, let's look at what a regular transformer is, and how they relate to a collection of vintage arcade games.