Which type of transmission system is NOT considered for a DC system?
DC two wires with midpoint earthed
DC three wires
DC two wires
DC four wires with line earthed
DC four wires with line earthed
DC four wires with line earthed is not
considered as the DC transmission system, whereas DC two wires with midpoint
earthed, DC three wires and DC two wires are type of transmission system for a
DC system.
Hence, the correct option is (D).
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