diff options
Diffstat (limited to '3760/CH5/EX5.13/Ex5_13.sce')
| -rw-r--r-- | 3760/CH5/EX5.13/Ex5_13.sce | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/3760/CH5/EX5.13/Ex5_13.sce b/3760/CH5/EX5.13/Ex5_13.sce new file mode 100644 index 000000000..56d1dc840 --- /dev/null +++ b/3760/CH5/EX5.13/Ex5_13.sce @@ -0,0 +1,14 @@ +clc;
+e=1.2; // pu excitation emf
+xs=0.8; // pu synchronous reactance
+vt=1; // pu rated voltage
+ia=1; // pu armature current for KVA=100 %, vt*ia=1 therefore ia=1;
+pf=cosd(asind((e^2-xs^2-1)/(-2*xs))); // leading power factor
+pd=vt*ia*pf;
+printf('Mechanical power developed by motor is %f pu\n',pd);
+e=1; // pu excitation emf reduced to generate 100% emf
+de=asind((pf*xs)/(vt*e)); // load angle
+ia=(sqrt(vt^2+e^2-2*e*vt*cosd(de)))/xs; // new armature current
+p=(vt*ia)*100;
+printf('New KVA rating is %f percent ',p);
+
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