Calculate the resistance values of a 4-section starter

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A 20 kW, 500 V shunt motor has an efficiency of 90% at full load. The armature copperloss is 40% of the full-load loss. The field resistance is 250 Ω. Calculate the resistance values of a 4-section starter suitable for this motor in the following two cases:

Reference no: EM131266667

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