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Calculate the string efficiency if the de-rating factor is .48.

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in Electric Drives by (99.8k points)
Calculate the string efficiency if the de-rating factor is .48.

(a) 48 %

(b) 52 %

(c) 50 %

(d) 60 %

This question was posed to me in an online interview.

Question is taken from Solid-State Devices in chapter Introduction to Solid-State Devices of Electric Drives

1 Answer

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Correct option is (b) 52 %

The explanation is: The string efficiency is calculated for series and parallel connection of SCRs. The value of string efficiency is 1 – (De-rating factor) = 1-.48 = 52 %.

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