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| author | Siddharth Agarwal | 2019-09-03 18:27:40 +0530 |
|---|---|---|
| committer | Siddharth Agarwal | 2019-09-03 18:27:40 +0530 |
| commit | 8ac15bc5efafa2afc053c293152605b0e6ae60ff (patch) | |
| tree | e1bc17aae137922b1ee990f17aae4a6cb15b7d87 /Working_Examples/2777/CH3/EX3.17 | |
| parent | 52a477ec613900885e29c4a0b02806a415b4f83a (diff) | |
| download | Xcos_block_examples-master.tar.gz Xcos_block_examples-master.tar.bz2 Xcos_block_examples-master.zip | |
Diffstat (limited to 'Working_Examples/2777/CH3/EX3.17')
| -rwxr-xr-x | Working_Examples/2777/CH3/EX3.17/Ex3_17.sce | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Working_Examples/2777/CH3/EX3.17/Ex3_17.sce b/Working_Examples/2777/CH3/EX3.17/Ex3_17.sce new file mode 100755 index 0000000..10e6b62 --- /dev/null +++ b/Working_Examples/2777/CH3/EX3.17/Ex3_17.sce @@ -0,0 +1,41 @@ +
+// ELECTRICAL MACHINES
+// R.K.Srivastava
+// First Impression 2011
+// CENGAGE LEARNING INDIA PVT. LTD
+
+// CHAPTER : 3 : TRANSFORMERS
+
+// EXAMPLE : 3.17
+
+clear ; clc ; close ; // Clear the work space and console
+
+
+// GIVEN DATA
+
+S = 500; // Rating of the 3-Phase transformer in kVA
+V1 = 11 * 10 ^ 3; // Votage rating of the 3-Phase transformer on HV side in Volts
+V2 = 400; // Votage rating of the 3-Phase transformer on LV side in Volts
+f = 60; // Frequencyin Hertz
+eta = 98; // Maximum Efficency of the Transformer in Percentage Operating at 80% full load and Unity Power factor
+K = 0.8; // Beacuse 80% Full load
+x = 1.0; // Unity Power factor
+Ex = 4.5; // Percentage impedance
+
+
+// CALCULATIONS
+
+Out = S * K * x; // Output in KiloWatts at 80% full load and Unity Power factor
+Inp = Out/(eta/100); // Input in KiloWatts at full load and Unity Power factor
+Total_loss = Inp - Out; // Total loss at full load in KiloWatts
+Cu_loss = Total_loss/2; // Copper loss in KiloWatts at 80% full load and Unity Power factor
+Pcu = Cu_loss/(K ^2 ); // Full load Copper loss in KiloWatts
+Er = Pcu/S; // Per unit Resistance
+theta = atand((Ex/100)/Er); // Power factor angle at secondary terminal voltage is minimum in Degrees
+Pf = cosd(theta); // Load power factor for minimum volatge of the secondary terminal
+
+
+// DISPLAY RESULTS
+
+disp("EXAMPLE : 3.17 : SOLUTION :-") ;
+printf("\n (a) Load power factor for minimum volatge of the secondary terminal , cos(theta) = %.4f lagging \n ",Pf);
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