2 files changed, 24 insertions, 0 deletions
diff --git a/431/CH5/EX5.12/EX5_12.sce b/431/CH5/EX5.12/EX5_12.sce
new file mode 100755
index 000000000..677123a16
--- /dev/null
+++ b/431/CH5/EX5.12/EX5_12.sce
@@ -0,0 +1,19 @@
+//chapter 5
+//example 5.12
+//page 441
+clear;
+clc;
+disp("example 5.12");
+KVA=2000;
+V=6600;     //rating
+V_p=6600/sqrt(3);
+I_a=(KVA*1000)/(sqrt(3)*V);
+R_a=0.4;    //armature resistance
+X_s=4.5     //synchronous reactance
+pf=0.8;
+phi=acosd(pf);
+printf("\nV/phase= %dV \n",V_p)
+E=sqrt((V_p*cosd(phi)+I_a*R_a)^2+(V_p*sind(phi)+I_a*X_s)^2)
+printf("E=  %f V per phase\n",E);
+R=((E-V_p)*100)/V_p;
+printf("percentage change in terminal voltage= %f percent",R);
+\ No newline at end of file
diff --git a/431/CH5/EX5.12/resultEX5_12.txt b/431/CH5/EX5.12/resultEX5_12.txt
new file mode 100755
index 000000000..4077bcef7
--- /dev/null
+++ b/431/CH5/EX5.12/resultEX5_12.txt
@@ -0,0 +1,5 @@
+ example 5.12   
+
+V/phase= 3810V 
+E=  4378.515597 V per phase
+percentage change in terminal voltage= 14.906234 percent 
+\ No newline at end of file