i want to correct this paragraph This paper presents an optimization strategy to obtain the optimal cross-section of induction motor with maximum induced torque.This can be obtained be achieved by using mathematical model equations,which are of main machine design parameters.The optimization strategy has been applied in order to reach the optimal air gap flux density,optimal inner stator diameter,optimal number of poles,stator and rotor slots.The optimization strategy consists of several steps.These steps are repeated using different magnetic materials types in the core and teeth of both stator and rotor.Also the effect of variation of machine gross length and number of phases on optimized values has been studied .The optimization calculation has been performed using MATLAB software.This Study leads to minimize the production costs of induction machines for the same machine outer diameter