Which statement correctly maps the symbol to the device?

Which statement correctly maps the symbol to the device?

• A. Diamond alone denotes a low-voltage transformer
• B. Diamond with PL denotes a low-voltage transformer
• C. Diamond with T denotes a low-voltage transformer
• D. Diamond with T denotes a high-voltage transformer

Answer: (C)

Shapes and letters on a schematic work together to tell you what device is there. The diamond shape acts as a generic container, and the letter inside specifies the exact device. When the letter T is placed inside the diamond, it identifies a transformer. In this context, that symbol is used to denote a low‑voltage transformer, not a high‑voltage one. The other options introduce either no specific device (diamond alone), or a different designation (PL) that would point to something else entirely, so they don’t match the intended symbol meaning.

Shapes and letters on a schematic work together to tell you what device is there. The diamond shape acts as a generic container, and the letter inside specifies the exact device. When the letter T is placed inside the diamond, it identifies a transformer. In this context, that symbol is used to denote a low‑voltage transformer, not a high‑voltage one. The other options introduce either no specific device (diamond alone), or a different designation (PL) that would point to something else entirely, so they don’t match the intended symbol meaning.