Which of the following is the most
economical a-c distribution system
a.c 2 phase 4 wire
a.c 2 phase 3 wire
a.c 3 phase 4 wire
a.c 3 phase 3 wire
a.c 3 phase 3 wire
In A.C. distribution system the most
economical system is A.C. 3-phase 3-wire system. A distribution system consists
of feeder, distributor, serviceman etc.
Hence, the correct option is (D).
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