what is rms value?

Answer 1

It stands for "root mean square", and is typically used as one measure of surface roughness, typically of machined metal surfaces.

Answer 2

Root Mean Square, the value you see on good-quality speakers, which is the true value of what they can handle, e.g. 80Watts RMS, rather than the - usually very highly exaggerated - 'peak power' figure, typically double the true RMS, or even worse, the PMPO Peak Music Power Output, which is often four times the true RMS value.
As if maximum power is the most important feature of a speaker. Clearly, it isn't. Sensitivity is a measure of how efficient the speaker is, and as such a spaeker with a 90 dB efficiency rating is much quieter than a speaker with a 95 dB rating, with the same input power. If the sensitivity is higher, the sound quality is likely to be better.

Answer 3

All the answers so far are different examples of the same thing.

Measure, for example, ten things: they can be anything you like measured in any units.

Take the list of measurements and square each number.

Add the squares together (Sum the squares).

Find the square root of the total. This is the root mean square value ( rms, RMS - same thing).

Answer 4

In mathematics, root mean square (abbreviated RMS or rms), also known as the quadratic mean, is a statistical measure of the magnitude of a varying quantity. It can be calculated for a series of discrete values or for a continuously varying function. The name comes from the fact that it is the square root of the mean of the squares of the values. It is a power mean with the power t = 2.

Answer 5

RMS stands for Root Mean Square. In speaker systems its gives the average output of the Speakers.

Answer 6

rms value is the root mean square value. For a series of disceet values it is the square root of the mean of the square of all the values. It has application in both mathematics and physics.

Answer 7

In electronics, RMS means 'root mean square' and it is a measure of the amount of energy that is delivered by an alternating current source.


Doug

Answer 8

RMS value is root mean square value. It is equal to, as the name says, root of mean of squares of all values.
For eg. RMS of x1,x2,x3 ......... xn

= { (x1^2 + x2^2 + x3^2 ............ xn^2) / n }^(1/2)

It gives a very good indication of average values where mean cannot be directly calculated.
For eg. RMS value of AC is calculated as AC is both +ve & -ve, hence its average = 0.
Similarly, RMS value of velocities is calculated as it can be both +ve & -ve & hence can calcel each other.
There are many other numerous examples for it like in mechanics.

Answer 9

in electronics rms means root mean square, it is used to show the average posative cycle voltage or current in an ac circuit.
Peak * SQRT 2

Answer 10

Root Mean Square - root 2 (approximately 0.7) times the peak value.

Answer 11

RMS is an integrated average. Used in electricity since the AC voltage is sinusoidal