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diff --git a/2252/CH19/EX19.3/Ex19_3.sce b/2252/CH19/EX19.3/Ex19_3.sce
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+
+Po=60D+3//full load output of the motor 
+e=0.905//efficiency of the motor
+Pin=Po/e
+V=400//applied voltage
+I=Pin/V//line current drawn by the motor
+Rsh=200//resistance of the shunt field winding
+Ish=V/Rsh
+Ia=I-Ish
+Ra=0.1//armature resistance
+Eb=V-Ia*Ra
+A=2//no. of parallel paths in armature winding
+P=4//no. of poles
+phi=45D-3//flux per pole
+Z=450//total number of conductors
+N=round(60*Eb*A/(P*phi*Z))
+mprintf("Full load speed=%d rpm\n",N)
+//calculating armature torque
+Ta=0.159*P*phi*Ia*Z/A
+mprintf("Torque developed by the armature of the DC motor=%f N-m\n",Ta)
+//calculating useful torque
+Psh=60D+3//shaft power
+Tsh=60*Psh/(2*%pi*N)
+mprintf("Useful torque=%f N-m",Tsh)
+//error in the textbook answer for useful torque