Refrigeration Plant Operator B Practice Test

Which of the following is true about compressed air tools?

1. They are heavier than equivalent electrical tools

2. They are less safe than electrical tools in explosive atmospheres

3. They are more expensive than electrical tools

4. They can be damaged by overloading

The correct answer is: They are more expensive than electrical tools

Compressed air tools are designed to operate using pneumatic pressure rather than electrical power. They often have unique characteristics that influence their cost in comparison to electrical tools. While it can be the case that compressed air tools are generally more expensive because they require additional infrastructure—such as compressors, hoses, and storage tanks—this does not apply universally to all tools or applications. When evaluating the advantages of compressed air tools in certain environments, one of their notable benefits is that they can be safer in explosive atmospheres because they do not generate sparks, unlike electrical tools. Furthermore, while overloads can potentially damage any type of tool, the specific mechanisms of compressed air tools are not inherently more vulnerable to damage from overloads than those of electrical tools; each tool has its design limits. In summary, considering both the infrastructure and the application, the option regarding the expense reflects a common consideration when choosing between compressed air tools and electrical tools. Understanding the nuances of these tools and their respective environments can help guide appropriate tool selection based on safety and function as needed.