Final answer:
The steady state current error for a DC motor using proportional control with given parameters cannot be accurately calculated without additional information on system gain and reference current.
Step-by-step explanation:
The question provided appears to be related to the steady state current error in a series-wound DC motor when using a proportional control system. Using proportional control with a gain of Kp=2.4 V/A, the steady state error can be calculated based on the given motor parameters. These parameters include the armature resistance (Ra) and potentially the PWM gain, although not enough information is given in the question to directly calculate the error. Normally, for a proportional control system, the steady state error (E) can be found using the formula E = 1 / (1 + Kp*G), where G is the system gain. However, without specific values for input and desired output, the calculation cannot be completed and it is unknown which option between a. 73%, b. 1.1%, c. 91%, or d. 98.9% is correct. To provide a solution, additional information regarding the reference current and system gain is needed.