Which three-phase winding configuration forms a closed triangle in its connection?

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Multiple Choice

Which three-phase winding configuration forms a closed triangle in its connection?

Explanation:
Forming a closed triangle comes from how the windings are interconnected. In a delta connection, the three windings are connected end-to-end to form a continuous loop, so the ends of each winding meet to create a triangular path. Each corner of that triangle is connected to a line conductor, yielding a complete closed circuit around the three windings. In contrast, a wye (star) arrangement joins one end of each winding at a common neutral point, and the other ends go to the three lines—no closed triangle forms there. Placing windings in parallel simply puts identical windings across the same terminals, which also doesn’t create a triangular loop. So the delta connection is the configuration that forms a closed triangle.

Forming a closed triangle comes from how the windings are interconnected. In a delta connection, the three windings are connected end-to-end to form a continuous loop, so the ends of each winding meet to create a triangular path. Each corner of that triangle is connected to a line conductor, yielding a complete closed circuit around the three windings. In contrast, a wye (star) arrangement joins one end of each winding at a common neutral point, and the other ends go to the three lines—no closed triangle forms there. Placing windings in parallel simply puts identical windings across the same terminals, which also doesn’t create a triangular loop. So the delta connection is the configuration that forms a closed triangle.

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