Question: In either a (mathrm{Y}-Delta) or (Delta-mathrm{Y}) transformer, as per the American Standard notation, the negative-sequence phase shift is the reverse of the positivesequence phase shift.

In either a $\mathrm{Y}-\Delta$ or $\Delta-\mathrm{Y}$ transformer, as per the American Standard notation, the negative-sequence phase shift is the reverse of the positivesequence phase shift.

(a) True

(b) False

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