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 Homework Statement:

A D.C. shunt motor has an efficiency of 92.21 % when operated under fullload conditions. The motor is supplied by a 120 V D.C. source and has a rating of 1.55 kW at fullload. Given that the armature resistance of the motor is 0.33 Ω, find the resistance of the field winding. (You may neglect all losses other than those due to the armature and field winding resistances.)
Note – the rated power of a motor is the output power under fullload conditions.
 Relevant Equations:
 efficiency and or power at full load
Hi all, i'm needing help cracking this nut. If someone can help it would be greatly appreciated.
I am trying to find the current in the field or armature, but cant connect the dots.
I am trying to find the current in the field or armature, but cant connect the dots.