After Current and torque are calculated, the are plotted in form of the relation with the speed, and compared with the calculated characteristics from the parameters of the equivalent The comparison shows the characteristics are nearly equal in the range the synchronous speed and the maximum torque On the other hand, there are quite different from staning speed to pull up torque speed because of the effect of saturation in the rotor leakage inductance Of induction motor during start up. Since the equivalent circuit is only designed to illustrate the performance of induction motors in the operating range.