initial commit / add all books

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diff --git a/503/CH8/EX8.49/ch8_49.sci b/503/CH8/EX8.49/ch8_49.sci
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+//find no load freq setting,sys freq,at no load freq of swing generator, system trip freq

+

+clc;

+loadtot=260;

+r=125;

+pf=.84;

+genfl=r*pf;

+sld=75;    //supply load

+n=3;    //no of generators

+ls=loadtot-n*sld;

+m=-5/genfl;

+f=50;

+ff=f-m*sld;disp(ff,'set freq(Hz)');

+c=f-m*ls;disp(c,'set freq(Hz) supplied from swing generator');

+nld=sld+50/4;

+c=ff+m*nld;disp(c,'new system freq(Hz)');

+rld=310-n*sld;

+c=f-m*rld;disp(c,'set freq(Hz) of swing generator');

+nld=310/n;

+c=ff+m*nld;disp(c,'system trip freq(Hz)');