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+// FUNDAMENTALS OF ELECTICAL MACHINES 

+// M.A.SALAM 

+// NAROSA PUBLISHING HOUSE 

+// SECOND EDITION

+

+// Chapter 3 : TRANSFORMER AND PER UNIT SYSTEM

+// Example : 3.4

+clc;clear; // clears the console and command history 

+

+// Given data

+N_1 = 450  // number of turns in the primary coil of transformer

+N_2 = 45   // number of turns in the secondary coil of transformer

+Z_L = 3    // load impedance in Ω

+V_1 = 15   // primary coil voltage of transformer in V

+

+// caclulations 

+a = N_1/N_2   // turn ratio

+Z_1 = a^2*Z_L // load impedance referred to primary ohm

+I_1 = V_1/Z_1 // primary current in A

+

+

+// display the result 

+disp("Example 3.4 solution");

+printf(" \n Turn ratio \n a = %.0f \n", a);

+printf(" \n Load impedance referred to primary \n Z_1 = %.0f Ω \n", Z_1);

+printf(" \n Primary current \n I_1 = %.2f A \n", I_1);