Measuring cup, graduated cylinder, anything that has volumetric markings to tell you how much liquid you have. Or if the liquid has a known density, you can weigh it and determine its volume from mass/density. (You just have to make sure your units are all the same scale--if you weigh in lbs. and have density in grams/cubic centimeters, you have to convert lbs. to grams before using the density equation.
I know the basics of how to find these values from a graph, but not sure how to prove that average voltage of half-wave rectifier is peak/pi and rms is peak/2. Same for full-wave rectifier where average is 2peak/pi.
Pretty simple! When the input is negative, the output is zero, whereas when the input is positive, the output is the same as. the input. A: To see why a half-wave rectifier is useful, consider the. typical case where the input source voltage is a sinusoidal. signal with frequency Ï and peak magnitude A: v.