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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3574/CH2/EX2.13/EX2_13.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '3574/CH2/EX2.13/EX2_13.sce')
| -rw-r--r-- | 3574/CH2/EX2.13/EX2_13.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/3574/CH2/EX2.13/EX2_13.sce b/3574/CH2/EX2.13/EX2_13.sce new file mode 100644 index 000000000..411fda2ea --- /dev/null +++ b/3574/CH2/EX2.13/EX2_13.sce @@ -0,0 +1,28 @@ +// Example 2.13
+// Determine (a) Efficiency at rated load and 80% power factor
+// (b) 70% load and 80% power factor
+// Page No. 75
+
+clc;
+clear;
+close;
+
+// Given data
+FP=0.80; // Power factor
+PcorePU=0.0045; // Percentage core loss
+RPU=0.0146; // Percentage resistance
+Sload=70; // 70% rated load
+Srated=100; // 100% rated load
+
+// (a) Efficiency at rated load and 80% power factor
+etarated=FP/(FP+RPU+PcorePU);
+
+// (b) Efficiency at 70% load and 80% power factor
+SPU=Sload/Srated;
+IPU=SPU; // I_load is proportional to S_load
+eta=(SPU*FP)/(SPU*FP+PcorePU+IPU^2*RPU) // Efficiency
+
+// Display result on command window
+printf("\n Efficiency at rated load = %0.3f ", etarated);
+printf("\n Efficiency at 70 percent load = %0.3f ",eta);
+disp('There is very little change in efficiency');
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