Q'A 220 V d.c. series motor runs at 980 r.p.m. If the armature and field resistance are 0.22 and 0.1 2 respectively and the iron and friction losses are 0.5 kW, find (1) The drawn current if the...

Extracted text: Q'A 220 V d.c. series motor runs at 980 r.p.m. If the armature and field resistance are 0.22 and 0.1 2 respectively and the iron and friction losses are 0.5 kW, find (1) The drawn current if the armature torque is 88.9 N-M (2) The motor efficiency.