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+//CHAPTER 8- DIRECT CURRENT MACHINES
+//Example 12
+
+disp("CHAPTER 8");
+disp("EXAMPLE 12");
+
+//VARIABLE INITIALIZATION
+P=4;                         //number of poles
+N=750;                       //in rpm
+r_a=0.4;                     //in Ohms
+r_f=200;                     //in Ohms
+Z=720;
+phi=2.895*(10^6)*(10^(-8));  //in Wb (1 line=10^(-8) Wb)
+r_l=10;                      //load resistance in Ohms
+A=2;                         //for wave winding
+
+//SOLUTION
+E_a=(phi*Z*N*P)/(60*A); 
+disp(sprintf("The induced emf is %f V",E_a));
+// E_a=v+(I_a*r_a) but I_a=I_l+I_f and I_l=v/r_l, I_f=v/r_f =>I_a=(v/r_l) + (v/r_f)
+// =>E_a=v+(((v/r_l) + (v/r_f))*r_a)
+// taking v common, the following equation is obtained
+v=E_a/(1+(r_a/r_f)+(r_a/r_l)); 
+disp(sprintf("The terminal voltage of the machine is %f V",v));
+
+//The answer is slightly different due to the precision of floating point numbers
+
+//END