What is the difference between RMS and average value
Answers were Sorted based on User's Feedback
Answer / vivek
RMS value is the value of root of square of posiitive and
negative both values and it is positive while average may
be negative or zero also. RMS value of a sine wave of
amplitude 1 is 1/sqrt(2) while its average is zero.
Is This Answer Correct ? | 80 Yes | 39 No |
Answer / padam singh
RMS value is the root of the average of the square of the
instantaneous value of any wave. Being the squared it comes
always in positive value. It plays important role in
representing the value of sine wave (Mains voltage
specifically).It's value for a sine wave is equal to Peak
votage/sqrt(2). However average value is the simple average
of any wave. It comes positive for positive half and
negative for negative half of a sine wave. It's value is
Peak voltage/Pie for one half only and zero for a complete
sine wave. Generally AC Voltage is represented in terms of
RMS value.
Is This Answer Correct ? | 42 Yes | 9 No |
Answer / ashok meena
RMS value is equal to the product of foam factor (1.11)and
avg. value .
foam factor = (rms value/avg value) = 1.11
avg. value is actual output but for all computational work
we required rms value. thts y the rating is give in te for
off rms value .
Is This Answer Correct ? | 18 Yes | 10 No |
Answer / waqas
RMS value is Root of mean of the square of a sinusoidal signals instantaneous value.
Average value is sum of negative and positive side of a DC signal wave.
Average value for AC signal is always zero because half cycle of sinusoidal is +ve And half cycle is -ve so its sum will always be zero
Is This Answer Correct ? | 16 Yes | 12 No |
Answer / rishikesh sawale
The voltage at which heat dissipation in ac circuit is equal to heat dissipation in dc circuit is the RMS value.
and
The voltage at which charge transfer in ac circuit is equal to charge transfer in dc circuit is average value.
Is This Answer Correct ? | 6 Yes | 2 No |
how to test the ht machines?
what will happen if instead of neutral we use earth wire as return conductor?if we can use ,then why we are not using in our day to day appliances?please justify the answer
What is spill current in protection relays?
Why auxiliary transformers are not connected in parallel in primary stations?
Why does the adjacent zone of protection overlap?
How PSV sizing being done
how to calculate the fault in substation
what are the standard values for resistances(Megger testing) between L&N, L&E and N&E (L=Live,N=Neutral, E=Earth)?
What are the different types of VVVF Drive ?
Why machines are avoided to work is saturation region of B- H curve?
What is quadrantal symmetry?
Why air gap in rotating machines should be small?