What is the polarity order of secondary terminals on a transformer from left to right?

In transformer terminology, particularly regarding secondary terminals, the correct answer is rooted in the concept of additive polarity. This means that when examining the secondary terminals from left to right, they will be arranged in a way that facilitates proper voltage addition when connected to other transformers or circuits.

Using an additive approach ensures that the voltages add up correctly, which is critical for maintaining system balance and preventing faults. If the polarities were set up incorrectly, it could lead to serious operational issues such as short circuits or equipment damage.

The other options, such as subtractive, neutral, and random, do not appropriately describe the standard convention used for identifying terminal polarities. Subtractive might imply a configuration leading to destructive interference in voltages, while neutral and random suggest disorganized or undefined connections that fall outside the standard practices of wiring transformers. Thus, recognizing the additive nature of secondary terminals aids in ensuring the correct functioning of electrical systems that utilize transformers.