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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 /431/CH3/EX3.29 | |
| 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 '431/CH3/EX3.29')
| -rwxr-xr-x | 431/CH3/EX3.29/EX3_29.sce | 26 | ||||
| -rwxr-xr-x | 431/CH3/EX3.29/resultEX3_29.txt | 6 |
2 files changed, 32 insertions, 0 deletions
diff --git a/431/CH3/EX3.29/EX3_29.sce b/431/CH3/EX3.29/EX3_29.sce new file mode 100755 index 000000000..7fe105d0a --- /dev/null +++ b/431/CH3/EX3.29/EX3_29.sce @@ -0,0 +1,26 @@ +//Calculate efficiency of transformer //Chapter 3
+//Example 3.30
+//page 237
+clear;
+clc;
+disp("Example 3.30")
+kVA=10; //rating of the transformers
+V1=400; //primary voltage in volts
+V2=200; //secondary voltage in volts
+f=50; //frequency in hertz
+MAXeffi=0.96; //maximium efficiency
+output1=(kVA*0.75); //output at 75% of full load
+input1=(output1/MAXeffi);
+printf("\nInput at 75percent of full load=%fkW",input1);
+TL=input1-output1;
+printf("\nTotal losses=%fkW",TL);
+Pi=TL/2;
+Pc=TL/2;
+disp("Maximiunm efficiency occurs at 3/4th of full load")
+Pc=Pi/(3/4)^2;
+printf("\nThus,total losses on full load=%fW",((Pc+Pi)*1000));
+pf=0.8; //power factor lagging
+effi=(kVA*pf*100)/((kVA*pf)+(Pc+Pi));
+printf("\nEfficiency on full load. 0.8 power factor lagging=%fpercent",effi)
+
+
diff --git a/431/CH3/EX3.29/resultEX3_29.txt b/431/CH3/EX3.29/resultEX3_29.txt new file mode 100755 index 000000000..1a1fda68d --- /dev/null +++ b/431/CH3/EX3.29/resultEX3_29.txt @@ -0,0 +1,6 @@ + Example 3.29
+Full-load copper loss=375.000000W
+Total loss on full load=0.575000kW
+Total loss on half load=0.293750kW
+Efficiency at full load,0.8 power factor lagging=98.582871 percent
+Efficiency at half load,0.8 power factor lagging=98.552510 percent
\ No newline at end of file |