A 40 hp, 230 V, 3500 rpm separately excited DC motor is controlled by a linear converter of gain k₂ =200. The moment of inertia of the motor load is J=0.156 N-m/rad/sec. The speed regulation of the motor is approximately:
a) 0.005 %
b) 0.05 %
c) 0.5 %
d) 5 %