diff options
| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2642/CH3/EX3.9 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '2642/CH3/EX3.9')
| -rwxr-xr-x | 2642/CH3/EX3.9/Ex3_9.sce | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/2642/CH3/EX3.9/Ex3_9.sce b/2642/CH3/EX3.9/Ex3_9.sce new file mode 100755 index 000000000..5b1b69703 --- /dev/null +++ b/2642/CH3/EX3.9/Ex3_9.sce @@ -0,0 +1,34 @@ +// FUNDAMENTALS OF ELECTICAL MACHINES
+// M.A.SALAM
+// NAROSA PUBLISHING HOUSE
+// SECOND EDITION
+
+// Chapter 3 : TRANSFORMER AND PER UNIT SYSTEM
+// Example : 3.9
+
+
+clc;clear; // clears the console and command history
+
+// Given data
+P_i = 350 // iron loss of transformer in W
+P_cu = 650 // copper loss of transformer in W
+kVA = 30 // kVA ratingss of transformer
+pf = 0.6 // power factor
+
+// caclulations
+P_tloss = (P_i+P_cu)*10^-3 // total full load loss in kW
+P_out = kVA*pf // o/p power at full load in kW
+P_in = P_out+P_tloss // i/p power at full load
+n_1 = (P_out/P_in)*100 // efficiency at full load
+kVA_out = kVA*sqrt(P_i/P_cu) // o/p kVA corresponding to maximum efficiency
+P_01 = kVA_out*pf // o/p power in W
+P_tloss1 = 2*P_i // maximum efficiency iron loss=copper loss in W
+P_in1 = P_01+P_tloss1*10^-3 // i/p power in kW
+n_2 = (P_01/P_in1)*100 // efficiency
+
+// display the result
+disp("Example 3.9 solution");
+printf(" \n Efficiency at full load \n n_1 = %.2f percent \n", n_1);
+printf(" \n Out put power \n P_01 = %.1f kW \n", P_01);
+printf(" \n Efficiency \n n_2 = %.2f percent \n", n_2);
+
|