1 files changed, 16 insertions, 0 deletions
diff --git a/3760/CH5/EX5.12/Ex5_12.sce b/3760/CH5/EX5.12/Ex5_12.sce
new file mode 100644
index 000000000..83f2fa811
--- /dev/null
+++ b/3760/CH5/EX5.12/Ex5_12.sce
@@ -0,0 +1,16 @@
+clc;
+v=415; // rated volatge of motor
+pf=0.9; // leading power factor
+ps=15000; // shaft power
+E=400; // excitation emf
+r=0.5; // per phase resistance
+vt=v/sqrt(3); // rated per phase voltage
+e=E/sqrt(3); // per phase excitation emf
+c1=1.5;
+c2=-sqrt(3)*v*pf;
+c3=ps; // coefficients of quadratic equation in armature current
+p= [ c1 c2 c3 ];
+ia=roots(p);
+// higher value of armature current is neglected
+xs=((vt*sqrt(1-pf^2))-(sqrt(e^2-(vt*pf+ia(2)*r)^2)))/ia(2);
+printf('Synchronous reactance is %f ohm',xs);