Please Log in or Register for more.

What is the meaning of RMS value?

242 views

2 Answers

Answer :

RMS value or Root Mean Square value is defined as the steady value of an alernating waveform. The RMS value makes it more easy to compare an alternating waveform with the steady waveform.
Like 1 like

Answer :

RMS value means root mean square value. It is 0.707 times peak value of voltage or current. The ammeter and voltmeter records this rms value. RMS value for sine wave is more than average value. RMS value is also called effective value. 

RMS value of AC is given by DC which is flowing through a resistance for a given time and producing same amount of heat as produce by AC when AC is flowing through the same resistance for same time.
Like 0 like

Please log in or register to answer this question.

Related Questions


Define : i) Average value ii) RMS value of an AC Wave.
Last Answer : i) Average value: The average value is defined as the average of all instantaneous values during one alternation . That is, the ratio of the sum of all considered instantaneous values to the ... as produced by the alternating current when flowing through the same resistance for the same time.

Show More

385 views 1 answer







RMS value formula
Last Answer : RMS value formula

Show More

90 views 1 answer







Define RMS value.
Last Answer : RMS Value of Sinusoidal AC Waveform: The RMS value is the Root Mean Square value. It is defined as the square root of the mean value of the squares of the alternating quantity over one cycle ... power or heat as is produced by the alternating current during the same time under the same conditions.

Show More

184 views 3 answers







The equation of 50 Hz current sine wave having r.m.s. value of 60 A is?
Last Answer : (60*√2)Sin(2π*50*t)

Show More

1.1k views 2 answers







The r.m.s. value of pure cosine function is?
Last Answer : 0.707 of peak value

Show More

414 views 2 answers







The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of______degrees.
Last Answer : 45

Show More

833 views 2 answers







The r.m.s. value and mean value is the same in the case of?
Last Answer : The r.m.s. value and mean value is the same in the case of square wave.

Show More

173 views 1 answer







In which of the following waveforms is RMS voltage equal to the average voltage? A) Triangle wave B) Square wave C) Sine wave D) None of these
Last Answer : In which of the following waveforms is RMS voltage equal to the average voltage? A) Triangle wave B) Square wave C) Sine wave D) None of these

Show More

82 views 1 answer







What is the RMS voltage in a series RL circuit, if the voltage across R and L is 256 V and 192 V respectively? A) 320 V B) 448 V C) 64 V D) None of these
Last Answer : What is the RMS voltage in a series RL circuit, if the voltage across R and L is 256 V and 192 V respectively? A) 320 V B) 448 V C) 64 V D) None of these

Show More

145 views 1 answer







Define : i) Maximum Value ii) RMS Value of ac supply
Last Answer : i) Maximum Value :- The maximum or peak value attained by an alternating quantity during positive or negative half cycle, is called maximum value or peak value.  ii) RMS Value of ac ... as produced by the alternating current when flowing through the same resistance and for the same time. 

Show More

85 views 1 answer







Consider the sinusoidal voltage waveforms, v1(t) and v2(t), as shown  (i) State the frequency and amplitude for both the voltage waveforms. (ii) Calculate the rms value of v1(t) and v2(t), ... time domain. (vii) Calculate the instantaneous value of v2(t) at t = 38 ms.

Show More

57 views 0 answers







How important is the value of something if someone finds no worth in it?
Last Answer : answer:Sounds like Larry L. made out. He was just going to throw the items away. Now he has money for his trash.' The woman /buyer thinks she made out too. Such things as value' are in the eye ... , ice is of little value to an Eskimo. But it is rare and valuable to someone living on the Equator.

Show More

1 view 1 answer







Is there any value to the Franklin Lawn Darts 3210?
Last Answer : I don’t know, but I DO know that it is illegal to sell lawn darts in the state of California. I recommend going on ebay and seeing what they are selling for to give you some idea of what you might be able to get for them.

Show More

0 views 1 answer







What do you value?
Last Answer : In people: goodness and a sense of humor In ordly goods: utility

Show More

1 view 1 answer







Does it have to be of value to anybody?
Last Answer : Are you trying to get us to do your homework?

Show More

1 view 1 answer







How to Find the Value of Old Coins
Last Answer : How to Find the Value of Old Coins If you have an antique coin collection, or if you just managed to find a couple of really, really old coins lying around, it's likely that you've wondered how ... this article, you'll surely be delighted to learn how to clean old coins or how to clean dirty money.

Show More

4 views 1 answer







Define Dielectric Strength for transformer oil. State its value for new transformer oil.
Last Answer : Dielectric strength is defined as the maximum voltage that can be applied to across to the Fulid with out electrical breakdown is called Dielectric strength.

Show More

84 views 1 answer







Calculate the value of equivalent capacitance of the combination.
Last Answer : Calculate the value of equivalent capacitance of the combination

Show More

133 views 1 answer







The determinant of a 2 x 2 matrix is 50. If one eigen value of the matrix is 10, the other eigen value is ________.
Last Answer : https://youtu.be/1WrgXbDX1K4

Show More

237 views 1 answer







Average rectified value

Show More

63 views 0 answers







Instantaneous value of a sine wave voltage
Last Answer : Instantaneous value of a sine wave voltage

Show More

173 views 1 answer







Average value
Last Answer : Average value

Show More

78 views 1 answer







Define average value.
Last Answer : Average Value of Sinusoidal AC Waveform: The average value is defined as the arithmetical average or mean value of all the values of an alternating quantity over one cycle.  And/OR  For ... charge as is transferred by the alternating current during the same time under the same conditions. 

Show More

103 views 2 answers







Which of the following connection of transformers will give highest value of secondary voltage ? (A) Delta primary delta secondary (B) Delta primary star secondary (C) Star primary star secondary (D) Star primary delta secondary
Last Answer : Which of the following connection of transformers will give highest value of secondary voltage ? (A) Delta primary delta secondary (B) Delta primary star secondary (C) Star primary star secondary (D) Star primary delta secondary

Show More

578 views 1 answer







True value has been 50 whereas measured value is 40 then the percentage error in the reading will be ______.  (A) 20% (B) 40% (C) 50% (D) 30%
Last Answer : True value has been 50 whereas measured value is 40 then the percentage error in the reading will be 20%. 

Show More

102 views 1 answer







For a round wire, the approximate value of fusing current is given by
Last Answer : For a round wire, the approximate value of fusing current is given by  K√d3

Show More

194 views 1 answer







In a synchronous generator if the excitation increased from a low value to normal value, with a fixed load  (A) The armature current increases and the power factor decreases  (B) The armature ... but is lagging  (D) The armature current decreases and the power factor increases and is leading
Last Answer : In a synchronous generator if the excitation increased from a low value to normal value, with a fixed load The armature current decreases and the power factor increases and is leading

Show More

130 views 1 answer







In a 5 bit weighted resistor D/A converters, the resistor value corresponding to LSB is 40 kΩ, and the resistor value corresponding to MSB will be (A) 0.4 kΩ (B) 3 kΩ (C) 2.8 kΩ (D) 2.5 kΩ
Last Answer : In a 5 bit weighted resistor D/A converters, the resistor value corresponding to LSB is 40 kΩ, and the resistor value corresponding to MSB will be 2.5 kΩ 

Show More

105 views 1 answer







In an AC. circuit, a low value of kVAR compared with kW indicates?
Last Answer : In an AC. circuit, a low value of kVAR compared with kW indicates high power factor.

Show More

712 views 1 answer







In the case of an unsymmetrical alternating current the average value must always be taken over?
Last Answer : In the case of an unsymmetrical alternating current the average value must always be taken over the whole cycle.

Show More

270 views 1 answer














Last Answer : The value of co-efficient of adhesion will be high when rails are cleaned with sand.

Show More

87 views 1 answer








Last Answer : The normal value of adhesion friction is 0.25.

Show More

122 views 1 answer








Last Answer : For measurement of inductance having high value, we should use Hay's bridge.

Show More

169 views 1 answer








Last Answer : In a two value capacitor motor, the capacitor used for running purposes is paper spaced oil filled type.

Show More

162 views 1 answer








Last Answer : The value of starting capacitor of a fractional horse power motor will be 300 uF .

Show More

98 views 1 answer








Last Answer : The operating speed of a synchronous motor can be changed to new fixed value by changing frequency.

Show More

119 views 1 answer








Last Answer : A synchronous machine with low value of short-circuit ratio has lower stability limit.

Show More

103 views 1 answer








Last Answer : For high value of diversity factor, a power station of given installed capacity will be in a position to supply more number of consumers.

Show More

169 views 1 answer







What is the maximum value of power factor?
Last Answer : 1 is the maximum value of power factor.

Show More

118 views 1 answer







What is the value of Beta in power BJT?
Last Answer : The beta value in power BJT is 5 to 10.

Show More

105 views 1 answer







Do you wish any past members of this group would come back and have you wondered about them, or tried to get them back?
Last Answer : there is only one who recently left that I care about and miss, but they make their own choices, they know fluther is still here, and if they choose to return I will be delighted. I have no plans to “track anyone down” to get them to come back, sounds a bit stalky to me.

Show More

2 views 1 answer







How much is a 1973 Datsun Pickup worth?
Last Answer : In my option that’s about TWO Thousand dollars too high. Just traded in 1993 Subaru with high miles, most dealers told me $250 to 600. KBB was about $650.

Show More

1 view 1 answer







Do you want a "wife"? (details)
Last Answer : Yes. Absolutely. What I want most from my wife is someone who can take care of the daily administrative tasks. Make sure the bills get paid, the cars get serviced, that sort of thing. I am more than willing ... just want a wife. There are no kids involved so that won't be an issue. Any takers? :-)

Show More

2 views 1 answer







You can have any one thing, what will it be?
Last Answer : I’ll just stick with my wife

Show More

2 views 1 answer







For how long is it new? Can anything be truly exotic?
Last Answer : Words like this are all about perspective. They are relative terms.

Show More

1 view 1 answer







Are subject/object values and appropriate way to look at the world?
Last Answer : Say more about what you mean by subject/object values, or there won’t be a very communicative discussion, I fear.

Show More

1 view 1 answer







A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?
Last Answer : A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will not start at all.

Show More

230 views 1 answer







A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms value of the current flowing through each thyristor of the converter is
Last Answer : Please show the solution for this question

Show More

515 views 2 answers







What is RMS value ?
Last Answer : If a certain amount of heat is generated in a certain amount of DC current flows through a certain register at a certain time , if the same amount of heat is generated in the current flowing through the ... at the same time, then that DC current is called the effective or RMS value of AC current.

Show More

1 view 1 answer






Show More⇦ PreviousNext ⇨