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Question: the rotational losses for a 1000hp synchronous motor are found...

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The rotational losses for a 1000-hp synchronous motor are found to be 18 kW. The motor operates from a 2300-V three-phase supply at 0.8 PF lagging. Find the internal generated voltage EA at full load assuming that the machines synchronous reactance is 1.9 Ω and that the armature resistance is negligible

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