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A 4-pole, dc shunt motor working on 250V takes a current of 2A when running at no load on 1000 rpm. Calculate its back emf and speed at load if the motor takes 51A. Armature and shunt field resistance are 0.2Ω and 250Ω respectively

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A 4-pole, dc shunt motor working on 250V
takes a current of 2A when running at no
load on 1000 rpm. Calculate its back emf
and speed at load if the motor takes 51A.
Armature and shunt field resistance are 0.2Ω
and 250Ω respectively
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