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+//CHAPTER 7- SINGLE PHASE TRANSFORMER
+//Example 12
+
+disp("CHAPTER 7");
+disp("EXAMPLE 12");
+
+//VARIABLE INITIALIZATION 
+v1=400;                         //primary voltage in Volts
+f=50;                           //Hz
+Io=10;                          //in Amp no load current
+pf =0.25;                       //lagging
+N1=500;                         //given
+
+//SOLUTION
+// N1/N2=V1/V2
+phi0=acos(pf);
+Iphi=Io*sin(phi0);
+disp("SOLUTION (a)");
+disp(sprintf("The magnetic component of no load current is %f Amp",Iphi));
+//
+ironLoss=v1*Io*pf;
+disp("SOLUTION (b)");
+disp(sprintf("The iron loss on no load is %f W",ironLoss));
+//
+//E1=4.44.f.N1.φm
+phiM=v1/(4.44*f*N1);
+disp("SOLUTION (c)");
+disp(sprintf("The value of flux in the core is %f Wb",phiM));
+disp(" "); 
+// 
+//END