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Calculate the string efficiency if the de-rating factor is .22.(a) 78 %(b) 42 %(c) 20 %(d) 90 %I have been asked this question in an internship interview.Enquiry is from Solid-State Devices topic in division Introduction to Solid-State Devices of Electric Drives |
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Answer» CORRECT option is (a) 78 % For EXPLANATION I would say: The string efficiency is calculated for SERIES and parallel CONNECTION of SCRs. The value of string efficiency is 1-(De-rating FACTOR)=1-.22=78 %. |
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