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+// Example 2.6
+// Computation of (a) Equivalent input impedance of the transformer and load
+// combination (b) Primary current when 2400V is supplied to primary 
+// (C) Voltage across the load
+// Page No. 61
+
+clc;
+clear;
+close;
+
+// Given data
+S=37500;               // Transformer ratings
+VHS=2400;              // High side voltage
+VLS=600;               // Low side voltage magnitude
+ZloadLS_Mag=10;        // Low side load impedance magnitude
+ZloadLS_Ang=20;        // Low side load impedance angle
+Req=2.8;               // Equivalent resistance
+Xeq=6;                 // Equivalent reactance
+VT=2400;               // Primary voltage supplied
+
+// (a) Equivalent input impedance of the transformer and load combination
+a=VHS/VLS;                       // Ratio of High side and low side voltages 
+ZloadHS_Mag=a^2*ZloadLS_Mag;     // High side load impedance magnitude
+ZloadHS_Ang=ZloadLS_Ang;         // High side load impedance angle
+// Polar to Complex form
+ZloadHS_R=ZloadHS_Mag*cos(-ZloadHS_Ang*%pi/180); // Real part of complex number
+ZloadHS_I=ZloadHS_Mag*sin(ZloadHS_Ang*%pi/180);  //Imaginary part of complex number
+Zin=Req+%i*Xeq+ZloadHS_R+%i*ZloadHS_I;
+// Complex to Polar form...
+
+Zin_Mag=sqrt(real(Zin)^2+imag(Zin)^2);       // Magnitude part
+Zin_Ang = atan(imag(Zin),real(Zin))*180/%pi;  // Angle part 
+
+// (b) Primary current when 2400V is supplied to primary 
+IHS_Mag=VT/Zin_Mag;                 // Primary current magnitude
+IHS_Ang=0-Zin_Ang;                  // Primary current angle
+
+// (c) Voltage across the load
+EHS_Mag= IHS_Mag*a^2*ZloadLS_Mag; // Magnitude of voltage across reflected load
+EHS_Ang=IHS_Ang+ZloadLS_Ang;      // Angle of voltage across reflected load
+
+ELS_Mag=EHS_Mag/a;               // Magnitude of actual voltage across real load 
+ELS_Ang=EHS_Ang;                 // Angle of actual voltage across real load 
+
+
+//Display result on command window
+printf("\n Equivalent input impedance of the transformer and load combination magnitude = %0.2f Ohm ",Zin_Mag);
+printf("\n Equivalent input impedance of the transformer and load combination angle = %0.2f deg ",Zin_Ang);
+printf("\n Primary current magnitude = %0.2f A ",IHS_Mag);
+printf("\n Primary current angle = %0.2f deg ",IHS_Ang);
+printf("\n Actual input voltage magnitude = %0.1f V", ELS_Mag);
+printf(" \n Actual input voltage angle = %0.2f deg",ELS_Ang);
+