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Diffstat (limited to '3574/CH12/EX12.3/EX12_3.sce')
-rw-r--r-- | 3574/CH12/EX12.3/EX12_3.sce | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/3574/CH12/EX12.3/EX12_3.sce b/3574/CH12/EX12.3/EX12_3.sce new file mode 100644 index 000000000..f235ab7fa --- /dev/null +++ b/3574/CH12/EX12.3/EX12_3.sce @@ -0,0 +1,41 @@ +// Example 12.3
+// Computation of (a) Induced emf at rated load (b) No load voltage
+// (c) Voltage regulation (d) What is the type of compounding?
+// Page No. 492
+
+clc;
+clear;
+close;
+
+// Given data
+Pload=320000; // Shunt generator power rating
+Vrated=250; // Shunt generator voltage rating
+Rf=20.2; // Shunt resistance
+Rrheo=7.70; // Shunt field rheostat value
+If=8.96; // Field current
+Iload=1280; // Load current
+Ra=0.00817; // Armature resistance
+Rip=0.00238; // Resistance of interpole winding
+Rse=0.00109; // Resistance of series winding
+Nf=502; // Turns per pole
+VNL=225; // No load voltage
+
+// (a) Induced emf at rated load
+Iload=Pload/Vrated; // Load current
+If=Vrated/(Rf+Rrheo); // Field current
+Ia=If+Iload; // Armature current
+Racir=Ra+Rip+Rse;
+Ea=Vrated+Ia*Racir;
+
+// (b) No load voltage
+Ff=Nf*If;
+
+// (c) Voltage regulation
+VR=(VNL-Vrated)*100/Vrated;
+
+
+// Display result on command window
+printf("\n Induced emf at rated load = %0.1f V ",Ea);
+printf("\n No load voltage = %0.0f V ",VNL);
+printf("\n Voltage regulation = %0.0f Percent ",VR);
+printf("\n The machine is overcompounded ");
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