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+// Example 2.4

+// Computation of (a) Secondary voltage (b) Load current

+// (c) Input current to the primary (d) Input impedance looking into the primary terminals

+// Page No. 51

+

+clc;

+clear;

+close;

+

+NHS=200;               // Number of turns in primary

+NLS=20;                // Number of turns in secondary

+E=120;                 // Primary voltage magnitude

+ES_Mag=12;             // Secondary voltage magnitude

+ES_Ang=0;              // Secondary voltage angle

+Zload_Mag=100;         // Load magnitude

+Zload_Ang=30;          // Load angle 

+f=60;                  // Frequency

+

+// (a)  Secondary voltage

+a=NHS/NLS;

+ELS=E/a;      

+

+// (b) Load current

+IS_Mag=ES_Mag/Zload_Mag;         // Load current magnitude

+IS_Ang=ES_Ang - Zload_Ang;       // Load current angle

+

+//(c) Input current to the primary

+Ip_Mag=IS_Mag/a;                 // Input current to the primary magnitude

+Ip_Ang=IS_Ang;                   // Input current to the primary angle

+

+//(d) Input impedance looking into the primary terminals

+Zin_Mag=a^2*Zload_Mag;           // Input impedance magnitude 

+Zin_Ang=Zload_Ang;               // Input impedance angle

+Zin_Mag=Zin_Mag/1000;

+

+// Display result on command window

+printf("\n Turns ratio = %0.0f  ",a);

+printf("\n Secondary voltage = %0.0f V", ELS);

+printf("\n Load current magnitude = %0.2f A",IS_Mag);

+printf("\n Load current angle = %0.0f deg",IS_Ang);

+printf("\n Input current to the primary magnitude = %0.3f A",Ip_Mag);

+printf("\n Input current to the primary angle = %0.0f deg",Ip_Ang);

+printf("\n Input impedance magnitude = %0.0f KOhm", Zin_Mag);

+printf("\n Input impedance angle = %0.0f deg", Zin_Ang);