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diff --git a/3784/CH6/EX6.4/Ex6_4.sce b/3784/CH6/EX6.4/Ex6_4.sce
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+++ b/3784/CH6/EX6.4/Ex6_4.sce
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+clc
+//variable initialization
+Pout=50 //output of induction motor in kilowatt
+Vm=420 //input of motor in volt
+F0=50 //supply frequency in hrtz
+F1=58 // frequency in hrtz
+N1=1475 //speed of motor in rpm
+P=4 //number of poles 
+Rs=0.4 //resistance of stator in ohm
+Rr=0.21 //resistance of rotor in ohm
+Xs=0.95 //reactance of stator in ohm
+Xr=0.85 //reactance of rotor in ohm
+Xm=32 //reactance of motor in ohm
+
+//Solution
+Vp=Vm/sqrt(3)
+K=F1/F0
+W0=2*%pi*F0
+W=W0*K
+Sm=Rr/(K*(Xs+Xr))
+Ws=2*K*W0/P
+Wm=Ws*(1-Sm)
+N=Wm*60/(2*%pi)
+Tdm1=(3*2*(Vp^2))/(2*(K^2)*W0*(Xs+Xr))
+printf('\n\n The Slip at maximum torque=%0.1f\n\n',Sm)
+printf('\n\n The Speed at maximum torque=%0.1f rpm\n\n',N)//The answers vary due to round off error
+printf('\n\n The Breakdown torque=%0.1f N-m\n\n',Tdm1)