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InterviewSolution
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What percentage of the rated output for DC machine and synchronous machine is taken as stray load losses respectively?(a) 1% and 0.5%(b) 0.5% and 1%(c) 3% and 0.1%(d) 0.1% and 5%The question was asked during an interview for a job.The origin of the question is Losses and Efficiency topic in chapter Rating and Loss Dissipation of Electrical Machines |
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Answer» RIGHT choice is (a) 1% and 0.5% To elaborate: Stray load LOSSES cannot be determined accurately. In DC machine, by convention, it is taken as 1% of the rated output for rating above 150 KW. For SYNCHRONOUS and induction machine, it is taken as 0.5% of their rated output. |
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