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// Electric Machinery and Transformers
// Irving L kosow
// Prentice Hall of India
// 2nd editiom
// Chapter 4: DC Dynamo Torque Relations-DC Motors
// Example 4-20
clear; clc; close; // Clear the work space and console.
// Given data
SR = 0.1 ; // Given percent speed regulation 10% of a shunt motor
omega_f1 = 60 * %pi ; // Full-load speed in rad/s
// Calculations
omega_n1 = omega_f1 * ( 1 + SR ); // No-load speed in rad/s
S = omega_n1 * ( 1 / ( 2 * %pi )) * ( 60 / 1 ); // No-load speed in rpm
// Display the results
disp("Example 4-20 Solution : ");
printf(" \n a: omega_n1 = %.2f \n ", omega_n1);
printf(" \n b: S = %d rpm ", S );
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