In a three-phase transformer, the phase value of the primary voltage can be computed using the formula EP(Primary) = ____.
A) EL / 1.732
B) 1.732 / EL
C) EL x 1.732
D) 3(EL) / 1.732

Question

Quizplus · Accepted Answer

The primary voltage in a three-phase transformer is related to the line-to-line voltage by a factor of 1.732 (square root of 3). Therefore, EP(Primary) = EL / 1.732.

In a Three-Phase Transformer, the Phase Value of the Primary