The secondary of a star-connected transformer supplies a balanced, delta-connected load. If the nominal phase voltage of the supply is 230 V, then the phase voltage of the load is approximately:

Question

Quizplus · Accepted Answer

If the secondary of a star-connected transformer supplies a balanced delta-connected load, the phase voltage of the load is √3 times the phase voltage of the supply. Thus, the phase voltage of the load is approximately 230 x √3 = 398.88 V, which is closest to 400 V. Therefore, the best choice is C.

The Secondary of a Star-Connected Transformer Supplies a Balanced, Delta-Connected