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Q: How do you get effective or rms voltage?
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What is the effective voltage for 3 phase 220 VAC power?

If, by 'effective' voltage, you mean 'root-mean-square' (rms) voltage, then 220 V is already expressed in those terms.Unless otherwise stated, a.c. voltages and currents are always expressed in rms values.


What is voltage rms in relation to alternate voltage?

RMS voltage is the DC equivalent of your AC waveform. Vrms=(Vpeak)/(root two) If your peak voltage is 170V then the RMS voltage would be approx. 120 V (see related link)


Can you connect an AC source in series to DC source - then what happens to the current under a steady state condition?

With an AC and a DC voltage source in series, the DC voltage can be added to the RMS value of the AC voltage to give the effective voltage.


What is called an effective voltage in Alternating current and if you mention 115 V ac 3 phase means peak voltage is 115 or it is an effective voltage?

115 is the RMS voltage. The actual voltage is a sine wave from -167 to +167 relative to ground. RMS stands for root-mean-square, and it a way of saying that 155 Volts of DC would do the same work on the same sized load. There can be up to 3 phases, and they are the sine wave, shifted by a part of the curve. In most houses, there are 2 phases, and the voltage to ground for each is 110 to 120 V RMS. The voltage between the 2 is 230-240VRMS. 3 phase gets very complex. Each phase is 115 to ground or neutral. 3 PHASE 115V AC EACH PHASE IS 120 DEGRES PHASE SHIFTED THE EFFECTIVE VALUE IS .639 X 115 THE PEAK VALUE OF PHASE IS 1.41X RMS VALUE.


What is the peak voltage of a 240 VRMS sine wave?

To calculate the peak voltage of an RMS voltage in a sine wave simply multiply the RMS voltage with the square root of 2 (aprox. 1,414) like this: 240 x 1,414 = 339,4 V RMS x sqr.root of 2 = peak voltage

Related questions

What is the effective voltage for a peak voltage of 311 volts?

When the peak voltage is 311, the RMS voltage is 220. (311 * square root (2))


What is the effective voltage for 3 phase 220 VAC power?

If, by 'effective' voltage, you mean 'root-mean-square' (rms) voltage, then 220 V is already expressed in those terms.Unless otherwise stated, a.c. voltages and currents are always expressed in rms values.


Define rms reverse voltage of a diode?

A DIODE will breakdown at a certain reverse voltage if RMS VOLTAGE IS SPECIFIED THEN the actual voltage will be RMS volts times 1.41


What is 10000 rms?

rms stands for root mean squared. rms voltage is a way of measuring a sort of average alterating current voltage as distinguished from peak-to-peak voltage. Likewise for ac rms current.


Effective voltage and maximum instantaneous voltage relation?

For a sinusoidal waveorm, RMS (effective, heating) value = 2/pi x (peak voltage). It's not 2/pi for waveforms with other shapes. 2/pi = roughly 63.7%


How do you get kilowatts if given voltage?

If voltage is given as RMS voltage (which it normally is), simply multiply the number of volts by the RMS current (as number of amps), and then divide by one thousand. Power (in kW)=Voltage (RMS volts) * Current (RMS amps) / 1000 (watts/kW)


What is voltage rms in relation to alternate voltage?

RMS voltage is the DC equivalent of your AC waveform. Vrms=(Vpeak)/(root two) If your peak voltage is 170V then the RMS voltage would be approx. 120 V (see related link)


Is 480 rms or peak voltage?

When people talk about 480V systems, they mean 480 is the RMS voltage.


How do you measure effective value of an alternating voltage?

The "effective" value of an alternating voltage is generally considered to be the RMS (Root-Mean-Square) value. The best way to measure that is with a True RMS voltmeter. Lacking that, if the voltage is sinusoidal, you can use an older style peak measuring voltmeter that estimates RMS value by dividing internally by the square root of 2. Any other shaped waveform will be measured incorrectly, depending on the amount of deviation from sinusoidal. (Square wave is the best example of error in this case - RMS and peak should be the same, but they won't read the same except on a True RMS voltmeter.)


What is a peak load voltage out of a bridge rectifier for a secondary voltage of 15 Vrms?

A: Peak voltage is RMS multiplied by a factor of 1.41


What is an RMS output?

That is an electric AC or audio output, where the voltage is measured in volts rms. Scroll down to related links and look for "dB conversion (decibel)". Look there in the middle at this headline: "RMS voltage, peak voltage and peak-to-peak voltage".


Can you connect an AC source in series to DC source - then what happens to the current under a steady state condition?

With an AC and a DC voltage source in series, the DC voltage can be added to the RMS value of the AC voltage to give the effective voltage.