A delta-connected three-phase system typically has no neutral conductor.

A delta-connected three-phase system typically has no neutral conductor.

• A. False
• B. True
• C. Only for high voltage
• D. It depends on load

Answer: (B)

In a delta-connected three-phase system, the three windings are connected end-to-end in a closed loop, forming a triangle. There isn’t a common point where all windings meet to serve as a neutral reference. A neutral is the reference point used for line-to-neutral voltages in a wye (star) connection, and since a delta has no such central node, there isn’t a neutral conductor in the delta arrangement. If a neutral is needed, it must come from something other than the delta itself (for example, a separate wye-connected transformer secondary or a transformer with a center-tapped winding), but that neutral isn’t part of the delta. So the statement is true.

In a delta-connected three-phase system, the three windings are connected end-to-end in a closed loop, forming a triangle. There isn’t a common point where all windings meet to serve as a neutral reference. A neutral is the reference point used for line-to-neutral voltages in a wye (star) connection, and since a delta has no such central node, there isn’t a neutral conductor in the delta arrangement. If a neutral is needed, it must come from something other than the delta itself (for example, a separate wye-connected transformer secondary or a transformer with a center-tapped winding), but that neutral isn’t part of the delta. So the statement is true.