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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 /1938/CH5/EX5.18 | |
| 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 '1938/CH5/EX5.18')
| -rwxr-xr-x | 1938/CH5/EX5.18/5_18.jpg | bin | 0 -> 1179190 bytes | |||
| -rwxr-xr-x | 1938/CH5/EX5.18/5_18.sce | 16 |
2 files changed, 16 insertions, 0 deletions
diff --git a/1938/CH5/EX5.18/5_18.jpg b/1938/CH5/EX5.18/5_18.jpg Binary files differnew file mode 100755 index 000000000..054700da5 --- /dev/null +++ b/1938/CH5/EX5.18/5_18.jpg diff --git a/1938/CH5/EX5.18/5_18.sce b/1938/CH5/EX5.18/5_18.sce new file mode 100755 index 000000000..b2b79913e --- /dev/null +++ b/1938/CH5/EX5.18/5_18.sce @@ -0,0 +1,16 @@ +clc,clear
+printf('Example 5.18\n\n')
+
+VA=10*10^3
+V_L=11*10^3,V_ph=V_L/sqrt(3)
+I_ph_X_Lph = 2.4*500 //leakage reactance drop in volts = 2.4 cm * 500 V/cm
+I_ph_R_aph =VA/(sqrt(3)*V_L)
+phi=acos(0.8)
+E_ph = sqrt((V_ph*cos(phi)+I_ph_R_aph)^2 +(V_ph*sin(phi)+ I_ph_X_Lph)^2)
+F_f1=109 //obtained from open circuit characteristics corresponding to calculated E_ph
+F_AR= 2.8*10 //2.8cm * 10 A/cm
+F_R = sqrt(F_f1^2 + F_AR^2 -2*F_AR*F_f1*cos(phi+ (%pi/2)) ) //cosine rule to Triangle OAB
+E_ph=7700 //corresponding to F_R from open circiut characteristics
+
+regulation=100*(E_ph-V_ph)/V_ph
+printf('Voltage regulation at full-load 0.8 pf lagging is %.2f percent\n',regulation)
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