Question: A 1 0 kW , 1 0 0 V , 1 0 0 0 rpm excited field - dc machine has Ra = 0 .

A 10 kW,100V,1000 rpm excited field-dc machine has Ra=0.1 and is connected to a 100 V dc supply.
(a) Determine the starting current if no starting resistance is used in the armature circuit.
(b) Determine the value of the starting resistance if the starting current is limited to twice the rated current.

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