1.

Which of the following systems is used in the secondary transmission of electric power?

A. 33-kV, three-phase, four-wire system
B. 66-kV, three-phase, four-wire system
C. 33-kV, three-phase, three-wire system
D. 110-kV, three-phase, three-wire system
Answer» D. 110-kV, three-phase, three-wire system


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