What is another common name for an AC transformer?

What is another common name for an AC transformer?

• A. Inverter
• B. Buzz Box
• C. Rectifier
• D. Welder

Answer: (B)

The thing being tested is recognizing a common nickname for the kind of power supply that uses a transformer to provide welding current. An AC transformer in older welding machines is often called a buzz box because it makes a distinctive buzzing noise when under load and has a boxy, heavy enclosure. This nickname sticks specifically to transformer-based welders, which rely on the transformer to step down voltage and permit high welding current at a low output voltage. Inverter welders, by contrast, use solid‑state electronics to generate the welding current and are typically lighter and quieter; they’re not referred to as buzz boxes. A rectifier inside a machine converts AC to DC, which is a different function from the transformer itself, and a welder is just the overall device, not the transformer’s common nickname. So the term that best fits an AC transformer in this context is buzz box.

The thing being tested is recognizing a common nickname for the kind of power supply that uses a transformer to provide welding current. An AC transformer in older welding machines is often called a buzz box because it makes a distinctive buzzing noise when under load and has a boxy, heavy enclosure. This nickname sticks specifically to transformer-based welders, which rely on the transformer to step down voltage and permit high welding current at a low output voltage.

Inverter welders, by contrast, use solid‑state electronics to generate the welding current and are typically lighter and quieter; they’re not referred to as buzz boxes. A rectifier inside a machine converts AC to DC, which is a different function from the transformer itself, and a welder is just the overall device, not the transformer’s common nickname. So the term that best fits an AC transformer in this context is buzz box.