This article presents the experimental analysis of a rotary machine, Universal Motor Analysis; analysis that obeys the purpose of obtaining the almost perfect understanding of the electromechanical behavior of said unit of analysis; It should be noted that the variables to be analyzed were: voltage, current, power, torque, rpm, and power factor; specifically said data will lead to determine the regression model for each of the parameters measured, through the modification of its determination factor. Thus, an analysis of the correlational type was also performed among the variables collected above; finally, through a comparative analysis between engine efficiency during the alternative and continuous signal admission, the fuel efficiency of 91.03% will be determined in the first case, while in the second case, an efficiency of 96.66% was found; being able in this way to determine that the efficiency is greater in 5.63%, in Direct current (DC) compared to the application of Alternating current (AC).