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+// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION 
+
+// PART II : TRANSMISSION AND DISTRIBUTION
+// CHAPTER 2: CONSTANTS OF OVERHEAD TRANSMISSION LINES
+
+// EXAMPLE : 2.1 :
+// Page number 100
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+D = 100.0           // Distance between conductors(cm)
+d = 1.25            // Diameter of conductor(cm)
+f = 50.0            // Frequency(Hz)
+
+// Calculations
+r_GMR = 0.7788*d/2.0                 // GMR of conductor(cm)
+L = 4.0*10**-4*log(D/r_GMR)          // Loop inductance(H/km)
+X_L = 2*%pi*f*L                      // Reactance of transmission line(ohm)
+
+// Results
+disp("PART II - EXAMPLE : 2.1 : SOLUTION :-")
+printf("\nLoop inductance of transmission line, L = %.2e H/km", L)
+printf("\nReactance of transmission line, X_L = %.2f ohm", X_L)