Sunday, February 28, 2016

A.C Fundamentals (Solved Examples)

Problem 1


aa)      Prove that the R.M.S of,
V = k + A Sin wt   is,


Where, v1 = A Sin wt   and k is a D.C Component (constant).

bb)      Find the R.M.S Voltage of
V = 10 + 5 Sin (300t + 600 )  

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Answers

aa)      
Equation for the R.M.S is,

 



Since,




And
Cos 2π – Cos 0  =  1 – 1  = 0




bb)      This is a sin wave with a D.C Component. So We can use the equation we derived above.
Pabindu Lakshitha
B.Sc(Engineer) 
Electrical and Information Engineering. 



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