From the
step-up sub-station, electric power at 220 kV is transmitted to the outskirts
of the city by
3-phase,
2-wire overhead system
3-phase, 3-wire overhead system
2-phase,
3-wire underground system
3-phase, 4-wire overhead system
3-phase, 3-wire overhead system
As 220 kV
step up to 220kV/400 kV, So. that it is a primary transmission line. Hence 3-
, 3 wire over head system preferred.
Hence, the
correct option is (B).
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