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+//calculating shaft power
+V=100//voltage applied to series motor
+Ra=.22//armature resistance
+Rse=.13//series field resistance
+Rm=Ra+Rse//total resistance
+Ia=45//current in armature circuit
+Eb=V-Ia*Rm
+Pm=Eb*Ia//mechanical power developed
+Wc=750//iron and friction losses
+Psh=Pm-Wc
+mprintf("Shaft power=%f kW\n",Psh/1000)
+//calculating torque developed
+N=750//speed in rpm
+Ta=60*Pm/(2*%pi*N)
+mprintf("Total torque=%f N-m\n",Ta)
+//calculating shaft torque
+Tsh=60*Psh/(2*%pi*N)
+mprintf("Shaft torque=%f N-m",Tsh)