1 files changed, 30 insertions, 0 deletions
diff --git a/2273/CH5/EX5.4/ex5_4.sce b/2273/CH5/EX5.4/ex5_4.sce
new file mode 100755
index 000000000..f78390db3
--- /dev/null
+++ b/2273/CH5/EX5.4/ex5_4.sce
@@ -0,0 +1,30 @@
+//Find sending end voltage, power factor, efficieny and regulation
+clear;
+clc;
+//soltion
+//given
+S=12000;//kVA//power supplied
+pf=0.8;//power factor
+del=1.73*10^-6;
+d=140//cm//distance of the conductor
+l=50*10^3;
+Vrl=33000;//V//recieving end voltage
+I=S*1000/(sqrt(3)*Vrl);
+Ll=0.15*S*1000*pf;
+R=Ll/(3*I*I);
+a=del*l*100/(R);
+r=sqrt(a/%pi);
+re=r*exp(-1/4);
+L=0.2*50*(10^-3)*log(d/re);
+X=2*%pi*50*L;
+X_=floor(X*100)/100;
+Vs=Vrl/sqrt(3)+(I*R*pf)+(I*X_*sind(acosd(pf)));
+Vsl=sqrt(3)*Vs;
+printf("Sending end line voltage= %.4fkV\n",Vsl/1000)
+spf=(Vrl*pf/sqrt(3)+I*R)/Vs;
+printf("Sending end power factor= %.3f lagging\n",spf);
+nt=S*pf*100/(S*pf+(Ll/1000));
+printf("Transmission efficiency= %.3f percent\n",nt)
+Pr=((Vsl-Vrl)*100)/Vrl;
+printf("Percentage regulation= %.3f percent\n",Pr);
+