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//CHAPTER 1- D.C. CIRCUIT ANALYSIS AND NETWORK THEOREMS
//Example 2
disp("CHAPTER 1");
disp("EXAMPLE 2");
//VARIABLE INITIALIZATION
//star values ra, rc and rd
ra=2; //in Ohms
rc=4; //in Ohms
rd=3; //in Ohms
r1=5; //in Ohms
r2=4; //in Ohms
r3=6; //in Ohms
//SOLUTION
//converting star with points A, C and D into delta ACD
r=(ra*rc)+(rc*rd)+(rd*ra); //'r' is the resistance that appears in the numerator of the equation of star-delta conversion
//delta values rac, rcd and rad
rac=r/rd;
rcd=r/ra;
rad=r/rc;
req1=(r1*rad)/(r1+rad); //equivalent resistance between A and D
req2=(r2*rcd)/(r2+rcd); //equivalent resistance between C and D
req3=req1+req2; //series combination of resistors
req4=(req3*rac)/(req3+rac); //parallel combination of resistors
req5=req4+r3;
req6=(req5*7)/(req5+7);
disp(sprintf("The eqivalent resistance between points A and B is %.2f Ω",req6));
//END
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