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// FUNDAMENTALS OF ELECTICAL MACHINES
// M.A.SALAM
// NAROSA PUBLISHING HOUSE
// SECOND EDITION
// Chapter 3 : TRANSFORMER AND PER UNIT SYSTEM
// Example : 3.11
clc;clear; // clears the console and command history
// Given data
V_1 = 200 // voltage in V
f = 50 // frequency in Hz
I_0 = 0.6 // single phase current in A
P_0 = 80 // power in W
// caclulations
cos_phi0 = P_0/(V_1*I_0) // power factor
sin_phi0 = 0.74 // from above expression
I_w = I_0*cos_phi0 // working component of no load current in A
I_m = I_0*sin_phi0 // working component of no load current in A
R_0 = V_1/I_w // no load circuit resistance in ohm
X_0 = V_1/I_m // no load circuit reactance in ohm
// display the result
disp("Example 3.11 solution");
printf(" \n No-load circuit resistance \n R_0 = %.2f ohm \n", R_0);
printf(" \n No-load circuit reactance \n X_0 = %.1f ohm \n", X_0);
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