A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be

• A.  240 V
• B.  6 V
• C.  234 V
• D.  474 V

Answer: (D)