// Electric Machinery and Transformers // Irving L kosow // Prentice Hall of India // 2nd editiom // Chapter 3: DC Dynamo Voltage Relations - DC Generators // Example 3-3 clear; clc; close; // Clear the work space and console. // Given data E_orig = 150; // Armature voltage of the generator in V S_orig = 1800; // Speed of the generator in rpm S_final_a =2000; // Increased Speed of the generator in rpm for case a S_final_b =1600; // Increased Speed of the generator in rpm for case b // Calculations E_final_a = E_orig * ( S_final_a / S_orig ); // No- load voltage of the generator // generator in V for case a E_final_b = E_orig * ( S_final_b / S_orig ); // No- load voltage of the generator // generator in V for case b // Display the results disp("Example 3-3 Solution : ") printf("\n a: Efinal = %.1f V ", E_final_a ); printf("\n b: Efinal = %.1f V ", E_final_b );