Скачать или смотреть RMS and AVERAGE value | [ ALL waveforms ] | (AC/DC)

RMS and Average value of all possible waveforms are described in this video. Shortcut method of finding rms & average value for all competitive exams are also discussed here.
What is RMS (Root Mean Square) Value ?
RMS value of any time-varying signal, in general, is related to the amount of heat being produced in the circuit or across the particular element in the circuit.

This RMS value represents the effective value of the given AC signal which will produce the same amount of heat (and hence power) across particular element if it is being replaced by the DC source of equivalent value.
So, by representing any time-varying signal in RMS value we can compare it with its equivalent DC voltage.

In this video, the general equation of RMS value has been derived, which can be used to find the RMS (Root Mean Square) value of any time-varying signal.
And RMS value for AC sinusoidal signal and for full-wave rectifier circuit waveform has been derived.

What is the average value of AC signal:

Average value of an AC signal or any time-varying signal, in general, is the time average of all the instantaneous values of the signal over the particular time period of the signal.

If the signal is symmetric about the horizontal axis or X-axis (Like in case of the sine wave) then its average value over the time period will be zero. So, in such cases, the average value has been found over the half period.

In this video, the average value of sine wave and the average value for the waveform of half wave rectifier circuit has been derived.

If the signal is non-periodic then to find the average value, one needs to mention the particular time over which the average value has been found.
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