What is rms unit?

Answer 1

The abbreviation, 'r.m.s.', represents 'root mean square', which is a way in which a.c. current (and voltage) is measured so that it may be compared with a d.c. current that does the same amount of work.

Answer 2

RMS stands for root-mean-square.

Voltage and current, in alternating current (a.c.) systems, vary continuously from zero to positive and negative peak values. The average voltage and current of an a.c. system is zero, so it begs one to determine an appropriate measure of these units in a real system. The voltage and current of an a.c. system are measured in rms, because the rms values of these units will deliver an equal electrical power to that of a direct current (d.c.) system operating at the same amplitudes of voltage and current.

Mathematically, an rms value for a continuous function f(t) defined over an interval of time, T(1) and T(2), is defined by

f(rms) = square-root[1 / (T(2) - T(2)) x integral[f(t)]^2(dt) over the interval T(1) to T(2)].

Answer 3

racing machine.