Which of the following is the correct formula for string efficiency of an insulator string?

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Electrical Engineering · Transmission and Distribution

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

String Efficiency = voltage across the whole string / (number of discs in string × the voltage across the disc nearest to the conductor)

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Answer 1

String Efficiency = voltage across the whole string / (number of discs in string × the voltage across the disc farthest from the conductor)

Answer 2

String Efficiency = voltage across the whole string / (number of discs in string × the voltage across the disc nearest to the conductor)

Answer 3

String Efficiency = (voltage across the whole string × number of discs in string) / the voltage across the disc nearest to the conductor

Answer 4

String Efficiency = (voltage across the whole string × number of discs in string) / the voltage across the disc farthest from the conductor

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