Which 3-phase configuration has three common ends of each phase meeting at the common terminal marked N for neutral?

• A. Delta Configuration
• B. Wye Configuration
• C. Radial Configuration
• D. Series Configuration

Answer: (B)

In a 3-phase electrical system, the Wye configuration is characterized by each phase being connected to a common neutral point. This configuration has three phase wires, and the ends of these phase windings meet at a common point, which is often referred to as the neutral terminal, marked as N.

This arrangement allows for the balanced distribution of electrical power and enables the use of a neutral wire for grounding and providing a return path for unbalanced loads. It also facilitates the use of single-phase loads without disrupting the three-phase balance, as the neutral point can serve as a reference point for the phases.

In contrast, the Delta configuration links the end of each phase winding to the start of the next, forming a closed loop without a neutral point. Therefore, it does not have a point marked for neutral like the Wye configuration does. Radial and series configurations do not represent standard configurations used in the context of balanced three-phase systems, making them unsuitable choices for this question.