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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 : 2.20 :
+// Page number 117-118
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+d = 2.5        // Diameter of conductor(cm)
+D = 200.0      // Distance of separation(cm)
+l = 100.0      // Length of line(km)
+
+// Calculations
+r = d/2                                          // Radius of conductor(cm)
+e = 1.0/(36*%pi)*10**-9                          // Constant ε_0
+D_m = (D*(3**0.5)*D*(3**0.5)*D*D)**(1.0/4)       // Mutual GMD(cm)
+D_s = (2*D*r)**(1.0/2)                           // Self GMD(cm)
+C_n = 2*%pi*e/log(D_m/D_s)*1000.0                // Phase-to-neutral capacitance(F/km)
+C_nu = C_n*l*10.0**6                             // Phase-to-neutral capacitance(μF)
+
+// Results
+disp("PART II - EXAMPLE : 2.20 : SOLUTION :-")
+printf("\nPhase-to-neutral capacitance, C_n = %.2f μF", C_nu)