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+// Electric Machinery and Transformers
+// Irving L kosow 
+// Prentice Hall of India
+// 2nd editiom
+
+// Chapter 3: DC Dynamo Voltage Relations - DC Generators
+// Example 3-8
+
+clear; clc; close; // Clear the work space and console.
+
+// Given data
+N_f = 1000; // Shunt field winding turns
+N_s = 4; // Series field winding turns
+I_f = 0.2; // Field current in A
+I_a = 80; // Full load armature current in A
+R_s =0.05; // Series field resistance in ohm
+
+// Calculations
+deba_I_f_N_f = I_f * N_f; 
+I_s_N_s = deba_I_f_N_f; // Series field ampere-turns
+I_s =( I_s_N_s ) / N_s; // Desired current in A in the series field required to
+// produce voltage rise
+I_d = I_a - I_s; // Diverter current in A
+R_d = ( I_s * R_s ) / I_d; // Diverter resistance in ohm
+
+// Display the result
+disp("Example 3-8 Solution : ")
+printf("\n a: IsNs = %d At ", I_s_N_s );
+printf("\n b: Rd = %.4f ohm ", R_d );
+