1.

The phase voltages of a 3 phase source are: van (t) = 100 cos (ωt - 60°), vbn (t) = 100 cos (ωt + 60°), vcn (t) = -100 cos (ωt). This source is

A. balanced and positive sequence
B. unbalanced and positive sequence
C. balanced and negative sequence
D. unbalanced and negative sequence
Answer» D. unbalanced and negative sequence


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