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diff --git a/3888/CH4/EX4.4/Ex4_4.JPG b/3888/CH4/EX4.4/Ex4_4.JPG Binary files differnew file mode 100644 index 000000000..69b268961 --- /dev/null +++ b/3888/CH4/EX4.4/Ex4_4.JPG diff --git a/3888/CH4/EX4.4/Ex4_4.sce b/3888/CH4/EX4.4/Ex4_4.sce new file mode 100644 index 000000000..2904b4516 --- /dev/null +++ b/3888/CH4/EX4.4/Ex4_4.sce @@ -0,0 +1,32 @@ +//Electric Power Generation, Transmission and Distribution by S.N.Singh
+//Publisher:PHI Learning Private Limited
+//Year: 2012 ; Edition - 2
+//Example 4.4
+//Scilab Version : 6.0.0 ; OS : Windows
+
+clc;
+clear;
+
+
+P=20; //Load in kW
+pf1=0.8; //Actual Power factor
+pf2=0.95; //Required Power factor
+phi1=acos(pf1); //Actual Power factor angle in degree
+phi2=acos(pf2); //Required Power factor angle in degree
+S1=P/pf1; //Actual Apparent Power in kVA
+S2=P/pf2; //Modified Apparent Power in kVA
+C_VAR=S1*sin(phi1)-S2*sin(phi2); //Required rating of the Capacitor in kVAR
+phi3=acos(0.1); //Power factor Angle of Phase Advancing device in degree
+alpha=phi1-phi2; //Angle in degree
+Beta=%pi/2-acos(0.1)+%pi-(phi1+%pi/2); //Angle in degree
+del=%pi-(Beta+alpha); //Angle in degree
+ph_adv_KVA=S1*sin(alpha)/sin(del); //Apparent Power of the Phase advancing device in kVA
+
+printf("\nThe rating of capacitor to raise the power factor to 0.95 lagging is %.2f kVAR",C_VAR);
+printf("\nThe rating of the phase advancing device is %.2f kVA",ph_adv_KVA);
+
+
+
+
+
+
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