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Calculate the string efficiency if the de-rating factor is .50.(a) 28 %(b) 42 %(c) 80 %(d) 50 %The question was asked in final exam.I want to ask this question from Solid-State Switching Circuits topic in chapter Introduction to Solid-State Switching Circuits of Electric Drives

Answer»

Correct answer is (d) 50 %

Explanation: The string EFFICIENCY is calculated for series and PARALLEL connection of SCRS. The value of string efficiency is 1-(De-rating FACTOR)=1-.50=50 %.



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