A switched reluctance motor (SRM) is characterized as a nonlinear load due to its operation, which involves rapid switching on and off to control the rotor. This switching behavior leads to a complex relationship between input variables, such as the number of applied pulses and the resulting output position. The discussion also suggests comparing SRMs with induction motors to further understand their operational differences. Understanding these relationships is crucial for analyzing the performance of SRMs in various applications. Overall, the nonlinear nature of SRMs stems from their unique operational mechanics.