A.C Fundamentals (Solved Examples 2)

1) Find the R.M.S of,

V (t) =   Sin 2πt +  Sin 6πt

Answer

First of all, We have to find the Period of this function.

We know that,

T = 2π/w

Here we have two sinusoidal functions (V1 & v2).

Figure 22.1 Show the Two sine functions individually. 

  ----- Sin 2πt

  -----Sin 6πt

Figure 22.1 Sin 2πt & Sin k2πt Functions individually, 

So now it is clear that sin2πt is the Primary wave.

T = 2π/w

Here w = 2π ,

Therefore,

T = 1

Now, 

Now,

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Pabindu Lakshitha

B.Sc(Engineer) 

Electrical and Information Engineering.