A single-phase two winding transformer is designed to operate at 400/2 – McqOptions

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1.	A single-phase two winding transformer is designed to operate at 400/200 V, 50 Hz. If the h.v. side is now energized from a 400 V, 40 Hz source, the no-load l.v. side voltage would be
A.	300 V
B.	250 V
C.	200 V
D.	150 V
Answer» D. 150 V

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