Suppose I'm charging a battery from an unfiltered rectifier, and am interested in the charge rate. Am I deluding myself if I use an average-reading ammeter?
Suppose I'm measuring the voltage of a parts-per-million accurate DC reference, and the meter leads may pick up a little RF and hum. Do I really want to measure true RMS?
Suppose I know that the AC line is a pretty good sinewave (which is always is) and I want to check the line voltages. Am I an incompetant individual for using a cheap Fluke?
John