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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 7: UNDERGROUND CABLES
+
+// EXAMPLE : 7.7 :
+// Page number 214
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+R_3 = 1.00            // Cable radius(cm)
+R_1 = 2.5             // Cable radius(cm)
+
+// Calculations
+R_2 = (R_1*R_3)**0.5      // Location of intersheath(cm)
+alpha = R_1/R_2           // α
+ratio = 2.0/(1+alpha)     // Ratio of maximum electric field strength with & without intersheath
+
+// Results
+disp("PART II - EXAMPLE : 7.7 : SOLUTION :-")
+printf("\nLocation of intersheath, R_2 = %.2f cm", R_2)
+printf("\nRatio of maximum electric field strength with & without intersheath = %.3f ", ratio)