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Diffstat (limited to '3871/CH6/EX6.24')
| -rw-r--r-- | 3871/CH6/EX6.24/Ex6_24.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/3871/CH6/EX6.24/Ex6_24.sce b/3871/CH6/EX6.24/Ex6_24.sce new file mode 100644 index 000000000..a02c192fd --- /dev/null +++ b/3871/CH6/EX6.24/Ex6_24.sce @@ -0,0 +1,26 @@ +//===========================================================================
+//chapter 6 example 24
+clc;
+clear all;
+
+//variable declaration
+KT = 201; //turn ration
+Is = 5; //secondary current in A
+Im = 7; //magnetising component of exciting current in A
+Ie = 3; //cross-loss component of exciting current in A
+delta =0;
+
+//calculations
+Kn = 1000/5; //nominal ratio
+alpha =atan(Ie/Im); //angle in °
+alpha1 = (alpha*180)/%pi;
+theta = delta-(((acos(0.8))*180)/%pi); //from figure taken the value of gamma
+z = cos((theta*%pi)/180);
+z1 = sin(((theta)*%pi)/180);
+Kc = KT+(((Ie*z)+(Im*z1))/Is); //actual current in A
+e = ((Kn-Kc)/Kc)*100;//ratio error
+b =(180/%pi)*(((Im*z)-(Ie*z1))/(KT*Is));
+
+//result
+mprintf("ratio error = %3.3f percentage",e);
+mprintf("\nphase angle error = %3.3f °",b);
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