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Calculate the string efficiency if the de-rating factor is .76.

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in Electric Drives by (99.8k points)
Calculate the string efficiency if the de-rating factor is .76.

(a) 24 %

(b) 25 %

(c) 26 %

(d) 27 %

I have been asked this question in final exam.

Question is taken from Solid-State Switching Circuits topic in section Introduction to Solid-State Switching Circuits of Electric Drives

1 Answer

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Correct option is (a) 24 %

Explanation: The string efficiency is calculated for series and parallel connection of SCRs. The value of string efficiency is 1-(De-rating factor)=1-.76=24 %.

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