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Resistance in Armature Calculations

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Thread Starter

JackVal

Joined Feb 22, 2018
1
I have been given the following practice exam question, and am struggling to figure it out. Could someone break it down for me and explain how to work out the following:

A d.c. self-excited shunt generator has a field resistance of 160Ω. The generated emf is 420V and it supplies a load of 55kW. Calculate the armature resistance when the generator terminal voltage is 408V.

Thanks
 
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