Bac F3 Bénin Practice Questions - Baccalauréat Série F3 (Électrotechnique) - Bénin Exam

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In a balanced three-phase star (Y) connected electrical power system, what is the fundamental mathematical relationship between line-to-line voltage U and phase-to-neutral voltage V?

U = sqrt(3) * V with a phase lead of 30 degrees U = V / sqrt(3) with a phase lag of 30 degrees U = 3 * V with in-phase relationship U = sqrt(2) * V with a phase lead of 45 degrees

Correct Answer:

U = sqrt(3) * V with a phase lead of 30 degrees

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