diff options
Diffstat (limited to '147/CH14/EX14.17/Example14_17.sce')
-rw-r--r-- | 147/CH14/EX14.17/Example14_17.sce | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/147/CH14/EX14.17/Example14_17.sce b/147/CH14/EX14.17/Example14_17.sce new file mode 100644 index 000000000..9c97ba48f --- /dev/null +++ b/147/CH14/EX14.17/Example14_17.sce @@ -0,0 +1,22 @@ +close();
+clear;
+clc;
+//input current 'I', and voltage 'V', speed of armature 'N', Armature resistance 'Ra', field resistance 'Rf'
+Ia1 = 20; //A
+V1 = 400; //V
+N1 = 250; //rpm
+Ra = 0.6; //ohm
+Rf = 0.4; //ohm
+N2 = 350; //rpm
+
+//(i)
+//current ot run the device at N2
+Ia2 = N2*Ia1/N1; //A
+
+//(ii)
+//Ea at N1
+Ea1 = V1 - Ia1*(Ra+Rf);
+//Applied voltage to run the device at N2
+V2 = Ia2*(Ra+Rf) + Ea1*(Ia2*N2/(Ia1*N1));
+mprintf(" Applied voltage to run the device at %d rpm = %0.1f V\n\n",N2,V2);
+mprintf("Applied current to run the device at %d rpm = %d A",N2,round(Ia2));
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