Armature Resistance in DC Generators

Armature resistance  “Ra” is the resistance offered by the armature circuit. It comprises, a. Armature Winding Resistance Armature Winding resistance is the ohmic resistance of the copper winding wires. b. Resistance of Brushes A brush is used to...

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A 6-pole lap connected DC series motor with 864 conductors, takes a current of 110 A at 480 V. The armature resistance and field resistance are 0.18 ohm and 0.02 ohm respectively.

Losses in a DC generator and DC motor