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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 III : SWITCHGEAR AND PROTECTION
+// CHAPTER 9: PROTECTION OF TRANSFORMERS
+
+// EXAMPLE : 9.6 :
+// Page number 640
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+MVA = 50.0        // Transformer rating(MVA)
+V_hv = 132.0      // HV side voltage of transformer(kV)
+V_lv = 33.0       // LV side voltage of transformer(kV)
+CT_sec = 1.0      // Secondary CT rating
+
+// Calculations
+I_FL = MVA*1000/(3**0.5*V_lv)                       // Full-load current(A)
+CT_ratio_33kV = I_FL/CT_sec                         // CT ratio on 33 kV side
+CT_ratio_132kV = (I_FL*V_lv/V_hv)/(CT_sec/3**0.5)   // CT ratio on 132 kV side
+
+// Results
+disp("PART III - EXAMPLE : 9.6 : SOLUTION :-")
+printf("\nCT ratio on 33 kV side = %.f : 1 ", CT_ratio_33kV)
+printf("\nCT ratio on 132 kV side = %.f : 1 = %.f√3 : 1 ", CT_ratio_132kV,CT_ratio_132kV/3**0.5)