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diff --git a/2921/CH11/EX11.4/Ex11_4.sce b/2921/CH11/EX11.4/Ex11_4.sce
new file mode 100755
index 000000000..74fc1bad5
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+++ b/2921/CH11/EX11.4/Ex11_4.sce
@@ -0,0 +1,25 @@
+clc;
+clear;
+mprintf('MACHINE DESIGN \n Timothy H. Wentzell, P.E. \n EXAMPLE-11.4 Page No.236\n');
+
+//Torque in input shaft
+hp=1.5;
+n=3450;
+T=63000*hp/n;
+
+mprintf('\n Torque in input shaft is %f lb*in.',T);
+
+//Note-In the book T=27.4 in-lb is used instead of T=27.391304
+
+//Output torque
+Ng=24;
+Np=10;
+Tout=(Ng/Np)*T;
+
+mprintf('\n Output torque is %f lb*in.',Tout);
+
+//Output speed
+nout=(Np/Ng)*n;
+
+mprintf('\n Output speed is %f rpm.',nout);
+