Recent questions tagged rms

Description : 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.

Description : RMS value formula

Last Answer : RMS value formula

Description : 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.

Description : 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

Description : 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

Description : 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)

Description : The r.m.s. value of pure cosine function is?

Last Answer : 0.707 of peak value

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

Last Answer : 45

Description : 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.

Description : What is the meaning of RMS value?

Last 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 ... same amount of heat as produce by AC when AC is flowing through the same resistance for same time.