initial commit / add all books

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diff --git a/431/CH3/EX3.3/EX3_3.sce b/431/CH3/EX3.3/EX3_3.sce
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+//calculating induced emf and maximium flux density

+//Chapter 3

+//Example 3.3

+//page 197

+clear;

+clc; 

+disp("Example 3.3")

+V1=230;                //primary voltage in volts

+f=50;                    //frequency in hertz

+N1=100;                  //number of primary turns

+N2=400;                  //number of secondary turns

+A=250*10^(-4);            //cross section area of core in m^2

+disp("since at no-load E2=V2")

+E2=(V1*N2)/N1;

+printf("induced secondary winding,E2=%dV",E2);

+phi=E2/(4.44*f*N2);

+Bm=phi/A;

+printf("\nMaximium flux density in the core=%fWb/m^2",Bm)
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diff --git a/431/CH3/EX3.3/resultEX3_3.txt b/431/CH3/EX3.3/resultEX3_3.txt
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+

+ Example 3.3   

+ 

+ since at no-load E2=V2   

+induced secondary winding,E2=920V

+Maximium flux density in the core=0.414414Wb/m^2 
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