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RMS (root mean square, 1.414) voltage of an AC (alternating current) sine wave represents its actual ability to do work. What can be converted to direct current, DC. Since the sine waves voltage (and current) varies constantly as it goes from zero to a peak through out its cycle it goes from no potential to a large potential to do work. The rms represents the power time of wave. The multiplier of 0.607 times peak gives the waveforms average voltage.

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Q: Why rms value of ac not peak value is used?
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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.


Is 240v rms value or peak value for AC source?

rms. dat means Vp-p will be 325V.


What value exactly matches the rms value of an ac signal?

peak


What is the peak voltage of a sine wave that measure 220V AC rms?

Peak voltage will be 1.414 times the RMS. Peak to Peak voltage, assuming no DC offset, will be 2 x 1.414 x the RMS value.


Is utility voltage ie 110 VAC given as a RMS value or as a Peak value?

All AC voltages and currents are expressed as rms values, unless otherwise specified. So 120 V AC is an rms value.


The rms value of the resultant current in a wire which carries a DC of 20A and a sinusoidal ac of peak value 20A is?

From your description, this sounds like it is a sine wave offset to 10A, so the peak is at 20A, and the min is at 0? For this case, you have 10A DC (RMS) wave and a 10A Peak - neutral AC wave; The RMS value of the AC wave is: 10/2*sqrt(2) = 3.54A. So the RMS amplitude of this wave is 13.54A.


What is the peak-to-peak voltage in a circuit with an rms voltage of 120VAC?

ANSWER: The peak to peak voltage can be found by multiplying 120 v AC x 2.82= 339.41


The rms value of the resultant current in a wire which carries a DC of 10A and a sinusoidal ac of peak value 20A is?

From your description, this sounds like it is a sine wave offset to 10A, so the peak is at 20A, and the min is at 0? For this case, you have 10A DC (RMS) wave and a 10A Peak - neutral AC wave; The RMS value of the AC wave is: 10/2*sqrt(2) = 3.54A. So the RMS amplitude of this wave is 13.54A.


What is the difference between rms value and average value of AC?

rms value of ac power = dc power in reference to heat production in pure resistive load So ac power of some rms value will produce the same heat in resistive load as dc power will of same value


A technician uses an oscilloscope to measure the peak value of an ac wave he tells you that the voltage has a peak value of 100v what is the rms value of the voltage?

100v divided by 1.41


Is AC voltage measured from Peak to Peak or from 0 to peak?

Both. When an AC voltage is measured and a number is reported, it is necessary to state that this number is rms value or peak value or peak to peak value.AnswerVoltages and currents are each normally expressed in root-mean-square (rms), unless otherwise stated. For example, when we talk about a '120-V service' or a '240-V service', we are expressing the voltages in rms values; it is unecessary to specify that these are rms values. For a sinusoidal waveform, Vrms = 0.707 Vpeak


Is the voltage rating on a light bulb the rms value or peak value?

It's the RMS value. A 120 volt lamp (light bulb) is rated according to its RMS voltage. Just like appliances in the home are rated at 120 volts (like your fridge, microwave and toaster), or 220 volts (like your clothes dryer). Note that these appliances will have to stand up to the peak voltage on the AC line. Naturally. And the peak voltage on an AC line is 1.414 times the RMS value of voltage. That means in a 120 volt AC line (120 volts RMS), the peak value of the voltage will be 1.414 times the 120 volts, or right at about 170 voltspeak for each cycle.