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| 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/EX3.12 | |
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initial commit / add all books
Diffstat (limited to '2642/CH3/EX3.12')
| -rwxr-xr-x | 2642/CH3/EX3.12/Ex3_12.sce | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/2642/CH3/EX3.12/Ex3_12.sce b/2642/CH3/EX3.12/Ex3_12.sce new file mode 100755 index 000000000..6d743ace0 --- /dev/null +++ b/2642/CH3/EX3.12/Ex3_12.sce @@ -0,0 +1,42 @@ +// FUNDAMENTALS OF ELECTICAL MACHINES
+// M.A.SALAM
+// NAROSA PUBLISHING HOUSE
+// SECOND EDITION
+
+// Chapter 3 : TRANSFORMER AND PER UNIT SYSTEM
+// Example : 3.12
+
+
+clc;clear; // clears the console and command history
+
+// Given data
+kVA = 25 // kVA ratings of transformer
+V1 = 2200 // primary side voltage in V
+V2 = 220 // secondary side voltage in V
+V_1 = 40 // voltage at high voltage side in V
+I_1 = 5 // current at high voltage side in A
+P = 150 // power at high voltage side in W
+
+// caclulations
+Z_01 = V_1/I_1 // reactance to primary sidec in ohm
+R_01 = P/I_1^2 // resistance to primary side in ohm
+phi = acosd(R_01/Z_01) // power factor angle
+X_01 = Z_01*sind(phi) // impedance to primary side in ohm
+a = V1/V2 // turn ratio
+Z_02 = Z_01/a^2 // reactance to secondary side in ohm
+R_02 = R_01/a^2 // resistance to secondary side in ohm
+X_02 = X_01/a^2 // impedance to secondary side in ohm
+I_2 = kVA*10^3/V2 // secondary side current in A
+E_2 = V2+I_2*Z_02 // secondary induced voltage in V
+VR = ((E_2-V2)/V2)*100 // voltage regulation
+
+// display the result
+disp("Example 3.12 solution");
+printf(" \n Resistance to primary side \n Z_01 = %.2f ohm \n", Z_01);
+printf(" \n Resistance to primary side \n R_01 = %.1f ohm \n", R_01);
+printf(" \n Impedance to primary side \n X_01 = %.2f ohm \n", X_01);
+printf(" \n Reactance to secondary side \n Z_02 = %.2f ohm \n", Z_02);
+printf(" \n Resistance to secondary side \n R_02 = %.2f ohm \n", R_02);
+printf(" \n Impedance to secondary side \n X_02 = %.3f ohm \n", X_02);
+printf(" \n oltage regulation \n VR = %.0f percent \n", VR);
+
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