Question: Figure shows a A-Y connected, 3-phase distribution transformer used to step down the voltage from 11000 V to 415 V line-to-line. It has two

Figure shows a A-Y connected, 3-phase distribution transformer used to step down

Figure shows a A-Y connected, 3-phase distribution transformer used to step down the voltage from 11000 V to 415 V line-to-line. It has two switches S and S. Under normal conditions S is closed and S is open. Under certain special conditions S is open and S is closed. In such a case the magnitude of the voltage across the LV terminals a and c is HV A. . S. C.. S (A) 240 V (C) 415 V LV a b (B) 480 V (D) 0 V

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