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diff --git a/Working_Examples/215/CH12/EX12.5/ex12_5.sce b/Working_Examples/215/CH12/EX12.5/ex12_5.sce
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+++ b/Working_Examples/215/CH12/EX12.5/ex12_5.sce
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+clc
+//Example 12.5
+//Calculate amplitude of line current
+disp('Given')
+disp('Line voltage = 300V, Power factor=0.8(lag), Phase power = 1200W')
+Vline=300;pf=0.8;PW=1200;
+disp('1200W will be consumed as 400W in each phase')
+Vp=400
+//Phase current be Ip
+Ip=Vp/(Vline*pf)
+//Let amplitude of line current be IL
+IL=Ip*sqrt(3)
+printf("Line current=%3.2f A \n",IL)
+//Let Zp be the phase impedance
+Zpmag=Vline/Ip
+//Sice power factor is 'lagging'
+Zpang=(acos(0.8)*180)/%pi
+printf("Phase impedance = %d(%3.2f deg)ohm",Zpmag,Zpang);
+\ No newline at end of file