The decisive elements establishing the technical and economic success of a constructive solution of an asynchronous motor are the answer characteristics in dynamic regime, the energy consumption, the gauge dimensions, the speed range, the answer time, the noise level, and a final aspect, important in equal extent, is the cost price. All these performances can be performed with the help of the electronic computer on the basis of some adequate programs, leading to an economic fabrication and utilization of the driving electrical equipment fitted out with asynchronous motors.