Final answer:
The Wye Primary system has multiple voltage levels and a neutral connection for improved safety, unlike the Delta system. Applicable in electrical engineering, Wye offers versatility in electric power distribution.
Step-by-step explanation:
An advantage of a Wye (Y) Primary system over a Delta primary system is that the Wye system can provide multiple voltage levels, which is useful for serving a variety of applications. Another advantage is that it allows for the use of a neutral connection, offering a return path for current in a polyphase system, which can enhance safety and stability. In contrast, a Delta system does not have a neutral and typically provides power at a single voltage level. Since the question is related to electricity distribution, it falls under the domain of Engineering, particularly electrical engineering.
To answer the provided reference questions:
- In a step-down transformer, the primary voltage is higher than the secondary voltage (a). This means the transformer reduces voltage from the primary to the secondary windings.
- To distinguish the primary winding from the secondary winding in a step-up transformer, you should note that the primary voltage is lower than the secondary voltage (b), indicating the transformer increases the voltage.
- For an isolation transformer, one of the true statements is that it can have more, fewer, or an equal number of primary and secondary turns (d).
The current relationship in transformers is that a step-up transformer increases voltage and decreases current, while a step-down transformer decreases voltage and increases current, based on the conservation of power and the transformer turns ratio.