initial commit / add all books

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diff --git a/431/CH5/EX5.1/EX5_1.sce b/431/CH5/EX5.1/EX5_1.sce
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+//caption- for calculating distribution factor

+//Chapter 5

+//example 5.1

+//page 424

+clear;

+clc;

+disp("example 5.1"); 

+printf("\n");

+slots=18;

+p=2;             //nmber of poles

+ph=3;            //three phase winding

+SA=(360/slots);  //slot angle

+m=slots/(p*ph);  //m=nmber of slots per pole per phase

+printf("number of slots per pole per phase,m=%d\n",m);

+printf("emfs of the oils of each phase will have a time-phase difference of  %d degree mechanical \n",SA);

+k_d=sind((m*SA)/2)/(m*sind(SA/2));

+printf("distribution factor=%f",k_d);

diff --git a/431/CH5/EX5.1/resultEX5_1.txt b/431/CH5/EX5.1/resultEX5_1.txt
new file mode 100755
index 000000000..d12bf24d6
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+++ b/431/CH5/EX5.1/resultEX5_1.txt
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+  

+ example 5.1   

+

+number of slots per pole per phase,m=3

+emfs of the oils of each phase will have a time-phase difference of  20 degree mechanical 

+distribution factor=0.959795 
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