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diff --git a/3760/CH6/EX6.28/Ex6_28.sce b/3760/CH6/EX6.28/Ex6_28.sce
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+clc;
+f=50;
+V=440;
+P=4;
+N=1490; //Rated speed
+N1=1600; //New Speed
+
+Ns=(120*f)/P;
+s=(Ns-N)/Ns;
+//With neglecting resistances and leakage reactances
+//Torque is directly proportional to s/(fr2)
+//Appllying the condition for same torque we get
+//a=s/f
+a=(s/f);
+//Ns/s=b
+b=120/P;
+//s=(Ns-N1)/Ns
+//Using above equation we get equation (f*f)-7500f-400000
+Q=[1 -7500 400000]
+R=roots(Q);
+f1=R(2);
+mprintf('Value of new Frequency is %f Hz',f1);
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