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+//CHAPTER 7- SINGLE PHASE TRANSFORMER
+//Example 2
+
+disp("CHAPTER 7");
+disp("EXAMPLE 2");
+
+//VARIABLE INITIALIZATION
+v1=400;                         //primary voltage in Volts
+v2=200;                         //secondary voltage in Volts
+I0=1;                           //in Amperes
+pf1=0.4;                        //power factor in degrees 
+I2=50;                          //secondary current in Amperes
+pf2=0.8;                        //lagging power factor in degrees
+
+//SOLUTION
+
+//function to convert from polar to rectangular form
+function [x,y]=pol2rect(mag,angle1);
+x=mag*cos(angle1);
+y=mag*sin(angle1);
+endfunction;
+
+phi_0=acos(pf1);
+phi=acos(pf2);       
+I2_dash=(v2*I2)/v1; 
+[x0,y0]=pol2rect(I0,-phi_0); 
+[x2_dash,y2_dash]=pol2rect(I2_dash,-phi); 
+I1_x=x0+x2_dash;                //x-component of I1
+I1_y=y0+y2_dash;                //y-component of I1
+disp(sprintf("The primary current in reactangular form is (%f-j%f) A",I1_x,-I1_y));
+
+//END