rms value average value

EEE

1. r.m.s. value , average value , form factor , peak factor EEE(2110005) Civil Department Amiraj College Of Engineering & Technology

2. R.M.S VALUE :- Defination expression R.M.S. Value of A Half HALF Wave Rectified A.C. AVERAGE VALUE:- defination Expression HALF Wave Rectified A.C . Form Factor Peak Factor contents

3. The full form of r.m.s value is root mean square value. It is given by that value of ac current and dc current passed through circuit for same time produced same heat energy. It is also define as effective or virtual value Introduction R.M.S VALUE

4. There are 2 types methods for finding r.m.s value 1)mid ordinate method 2)analytical method Methods for finding r.m.s value

5. mid ordinate method i= Suppose, = Ө So, i= Now, (mean of = = =  

6. (mean of The r.m.s value of ac current= = = =0.707  

7. R.M.S Value of a Half Wave Rectified A.C

8. It is given by that value of steady current which transfer across the circuit and the same charge transferred by ac quantity across the circuit in same time. Average Value

9. i= Area of half cycle is Average value of ac current= = = =  

10. = = = ) = = 0.637  

11. Peak factor is defined as the ratio of the max value to the R.M.S. value of an alternating quantity. It is denoted by . = = = 1.414 Peak factor is also called the crest factor or the amplitude factor.   Peak factor (Ka)

12. Form factor is defined as the ratio of the R.M.S. value to the average value of an alternating quantity. It is denoted by . It is denoted by . =1.11   Form factor

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