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//CHAPTER 7- SINGLE PHASE TRANSFORMER
//Example 21
disp("CHAPTER 7");
disp("EXAMPLE 21");
//VARIABLE INITIALIZATION
va=5000; //apparent power
v1=250; //primary voltage in Volts
v2=125; //secondary voltage in Volts
R1=0.2;
X1=0.75;
R2=0.05;
X2=0.2;
pf=0.8; //leading
//SOLUTION
R_e2=(v2/v1)^2*R1+R2;
X_e2=(v2/v1)^2*X1+X2;
I1=va/v1;
I2=va/v2;
//
//at full load leading
phi=acos(pf);
%reg=(I2*R_e2*pf-I2*X_e2*sin(phi))*100/v2;
disp("SOLUTION (i)");
disp(sprintf("The percent regulation at full load is %f",%reg));
//
//%R=(E2-V2).100/E2
V2=v2-%reg*v2/100;
disp("SOLUTION (ii)");
disp(sprintf("The secondary terminal at full load is %f V",V2));
disp(" ");
//
//END
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