Calculate the ratio of full-load speed to noload speed

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Reference no: EM131265848

A 400 V dc shunt motor takes a current of 5.6 A on no-load and 68.3 A on full-load. The load current weakens the field by 3%. Calculate the ratio of full-load speed to noload speed. Given: R_a= 0.18 Ω, brush voltage drop = 2 V, R_f = 200 Ω.

Reference no: EM131265848

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