3) A 440V dc shunt motor draws 40A while supplying the rated load at 1500rpm. The armature resistance resistance is 0.42 and the field-winding resistance is 2302. Determine the external resistance...

Extracted text: 3) A 440V dc shunt motor draws 40A while supplying the rated load at 1500rpm. The armature resistance resistance is 0.42 and the field-winding resistance is 2302. Determine the external resistance that must be inserted in series with the armature circuit so that the armature current does not exceed 150% of its rated value when motor is plugged? 150 120 62 82