What is the difference between RMS and average value

Answer Posted / 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



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Please provided formula for calculate the cable size from step up transformer to M.V panel, run overhead aluminum cables, total load is 5mega watt, total length 900 feet.

1297


what is the working principle of energy saver control panel. please give the complete calculation & theory.

1837


While testing a ZCT what parameters have to check or measure?

1894


What is the phase relationship between the primary and secondary voltages of a transformer?

590


what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

1811






What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.

1727


How many types of colling system it trformers?

726


star delta starter contorl circuit... drawing..

1670


please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.

1281


Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.

531


What is earth?

1796


How many types of faults are there in 3 phase power system?

641


we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer

1299


How to calculate energy stored in an inductance?

649


what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field

1476