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//Chapter 6
//Example 6_13
//Page 118
clear;clc;
md=175;
pf=0.75;
fc=72;
pae=120;
id=0.1;
x=fc;
y=pae*id;
ec_pf=sqrt(1-(y/x)^2);
printf("MAx demand charges = Rs. %.0f per kVA per annum\n", fc);
printf("Expenditure on phase advancing equipment = Rs. %.0f /kVAR/annum \n", y);
printf("Most economical power factor at which factory should operate = %.3f lag \n", ec_pf);
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