// Calculating the power developed by the armature of motor clc; disp('Example 6.5, Page No. = 6.12') // Given Data P = 125;// Power rating (in W) E = 230;// Voltage (in V) rpm = 5000; // Calculation of the power developed by the armature Losses_total = P;// Total losses (in W) Losses_constant = P/3;// Constant losses (in W). Since the sum of iron, friction and windage losses is approximately 1/3 of total losses Pa = Losses_total+Losses_constant;// Power developed by the armature (in W) disp(Pa,'Power developed by the armature (W)='); //in book answer is 167 (W). The answers vary due to round off error