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Question: a 4pole generator has an induced emf of 262v when...

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A 4-pole generator has an induced emf of 262V when driven at a speed of 400rpm. The armature is lap wound and has 652 conductors, its resistance being 0.15Ω. The bore of the pole shoe is 42cm diameter; the pole subtends an angle of 600 and is 20cm long. Calculate the flux density in the air gap.

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