This work proposes the modeling of the DC servo motor by FOPDT model. The experimental validations of the proposed model for the various PI controllers have been carried out. The analysis of different components of the modular servo system has also been stated. Various transient responses like overshoot, steady-state error, delay time, etc., have been considered to evaluate the performance of the proposed model. In the last, the results that were obtained from the experimental setup have been discussed.