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+// FUNDAMENTALS OF ELECTICAL MACHINES 
+// M.A.SALAM 
+// NAROSA PUBLISHING HOUSE 
+// SECOND EDITION
+
+// Chapter 8 : STARTING, CONTROL AND TESTING OF AN INDUCTION MOTOR
+// Example : 8.7
+
+clc;clear; // clears the console and command history 
+
+// Given data
+P_1 = 6      // number of pole
+P_2 = 4      // number of pole
+f =50        // supply frequency in Hz
+P = 60       // power in kW
+
+// caclulations 
+s = P_2/(P_1+P_2)        // combined slip
+N_cs = 120*f/(P_1+P_2)   // combined synchronous speed in rpm
+P_0 = P*(P_2/(P_1+P_2))  // o/p of 4-pole motor in kW
+
+// display the result 
+disp("Example 8.7 solution"); 
+printf(" \n Combined slip \n s = %.1f  \n", s );
+printf(" \n Combined synchronous speed \n N_cs = %.0f rpm \n", N_cs );
+printf(" \n Out-power of 4-pole motor \n P_0 = %.f kW \n", P_0 );
+