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diff --git a/3802/CH7/EX7.8/Ex7_8.sce b/3802/CH7/EX7.8/Ex7_8.sce
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+//Book Name:Fundamentals of Electrical Engineering
+//Author:Rajendra Prasad
+//Publisher: PHI Learning Private Limited
+//Edition:Third ,2014
+
+//Ex7_8.sce.
+
+clc;
+clear;
+Np=1000;                                 //number of Primary turns
+Ns=100;                                  //number of secondary turns
+KVA=120e3;                                //KVA rating of the transformer
+V_SL=440;                                //supply voltage in V
+
+K=Np/Ns;                             //transformer turns ratio
+I_SL=KVA/(sqrt(3)*V_SL);
+
+printf("\n (a)")
+V_PL=(V_SL*K)/sqrt(3);
+I_PL=(sqrt(3)*I_SL)/K;
+transformation_ratio=V_PL/V_SL;
+printf("\n Delta star connection:\n")
+printf("\n  Primary line current=%2.1f A ",I_PL)
+printf("\n  Primary line voltage=%d V ",V_PL)
+printf("\n  Transformation ratio =%2.1f \n",transformation_ratio)
+
+printf("\n(b)")
+V_PL=V_SL*K*sqrt(3);
+I_PL=I_SL/(sqrt(3)*K);
+transformation_ratio=V_PL/V_SL;
+printf("\n star delta connection:\n")
+printf("\n  Primary line current=%1.1f A ",I_PL)
+printf("\n  Primary line voltage=%d V ",V_PL)
+printf("\n  Transformation ratio =%2.2f ",transformation_ratio)
+