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diff --git a/Working_Examples/293/CH19/EX19.1/eg19_1.sce b/Working_Examples/293/CH19/EX19.1/eg19_1.sce
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+//a
+efficiency = 0.9; 
+Pi = 200*746/efficiency; //input power 
+x = 11; //reactance of the motor
+V1 = 2300/sqrt(3); //voltage rating 
+delta = 15*%pi/180; //power angle
+Ef = Pi*x/(3*V1*sin(delta)); //the induced excitation voltage per phase 
+disp("a")
+disp(Ef,"the induced excitation voltage per phase = ")
+
+//b
+z = complex(0,x); //impedance of the motor 
+ef = complex(Ef*cos(-delta),Ef*sin(-delta));
+
+Ia = (V1 - ef)/z ; //armature current 
+disp("b")
+disp(Ia,"armatur current = ")
+
+//c
+theata = atan(imag(Ia)/real(Ia)); //phase difference between Ia and V1
+pf = cos(theata); //power factor 
+
+disp("c")
+disp(pf,"power factor = ")
+
+if sin(theata)> 0  then
+    disp("leading")
+else
+    disp("lagging")
+end
+\ No newline at end of file