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We will always calculate rms value only since the average value of ac current or voltage is zero. So we are using rms values in the ac circuit to calculate the power and to solve an ac circuit.

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Q: Why you are calculating average and rms values for ac supply?
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What is the significant of average values of a particular wave?

wht is the significant of RMS VALUES OF A PARTICULAR WAVE/


Why you have to electrical quantities in RMS but not average or peak?

Average values of an AC source would be zero, which wouldn't be particularly helpful. Peak values are mainly useful if that's what you're interested in. RMS allows AC to be calculated as if it was DC, which is simple and helpful.


Household supply of 230volts is rms value or maximum value of voltage?

When you say holdhold supply of 230volts, you are referring to the RMS value, not the peak value.


Why does a digital multimeter show rms voltage?

rms values refer to "root mean square" mathematical values of the sine wave of electricity. This is essentially an "average" value of the voltage being measured as voltage in any circuit varies constantly.


What do we actually measure for calculation of average value of a particular wave?

wht is the significant of RMS VALUES OF A PARTICULAR WAVE/


What is the formula for calculating DC votage from a 3 phase rectifier bridge using AC voltage across one phase?

A 3-phase rectifier bridge can be used with a single phase supply, it just means that four of the diodes are not connected. The peak voltage (if a reservoir capacitor is used) is sqrt(2) times the rms supply voltage and the average voltage using inductor smoothing is 0.9 times the rms voltage.


How do you change dc values to ac values?

To convert DC values to AC values if you are wanting RMS values they are the same. 100V DC and 100V AC (RMS) are the same "value". If you want to know the Peak-To-Peak AC value you would multiply the RMS value by 1.414. So 100V AC RMS equals 141.4 V Peak to Peak.


What is root mean square or RMS?

RMS is a type of average. It is the "root of the mean of the squares". That is, the individual values are squared, the average is taken, and the square root of this is calculated. Since the "individual values" are often continuous - a typical example is a voltage, which continuously changes for example as a sine wave - integration must be used.


What is a rectifier type instrument?

rectifier type of instrument are those instruments which are callibrated in rms values.in order to find out the average values multiply the values with the form factor.


Heating effect of a 5 amp of AC compared to 5 amp of DC?

Electrical current alone has no heating effect. Current through a device, with a voltage across the device will have a heating effect. The equation for calculating it is power = voltage x current, where power is proportional to the heating effect If the AC supply is measured as an RMS voltage and an RMS current and the device is resistive, then the heating effect will be identical to the same values with a DC supply. RMS means the "average" voltage or current of an AC supply whereas the peak AC voltage refers to the highest voltage that is reached on each cycle. However, if the device is not just resistive but is inductive, the heating effect will be lower with an AC supply than with a DC supply. By inductive, we mean that the device has a coil or capacitor, for example, in the circuit. The reasons why are outside the scope of this answer but are explained in many electronics text books, or look up "power factor" on google


What is RMS watt?

RMS watts is not a real measurement. The correct measurement is "average power", which is measured in "watts". It is dervied from RMS voltage, but that doesn't make it "RMS watts". "RMS watts" would be 22% higher than the correct "average watts".


What is the average value of an ac voltage that has a maximum peak voltage of 80 vac?

To get the average:Volts avg=0.637 X Vp (peak)0.637 X 80 Vp = 50.96 VavgTo get rms (root mean square):Volts rms = 0.707 X Vp (peak)0.707 X 80 Vp = 56.56 VrmsCommentIt should be pointed out that the average value, described above, is for half a cycle. The average for a complete cycle is zero.