1. A DC series motor has a rated of 25 hp, 200V, 2 000 rpm, 4 poles, 800 conductors that arranged in simplex lap winding and an armature circuit resistance is 0.012. At rated power and rated speed,...

Extracted text: 1. A DC series motor has a rated of 25 hp, 200V, 2 000 rpm, 4 poles, 800 conductors that arranged in simplex lap winding and an armature circuit resistance is 0.012. At rated power and rated speed, the motor draws a line current of 100A. A. Calculate the flux per pole when then motor run at rated speed. B. Calculate the armature torque value that develop at rotor shaft when operates at rated- load. C. Calculate the rotational losses when the motor operates at rated power. D. Calculate the total motor efficiency.