Which of the following is NOT a function of air compressors?

Air compressors serve various functions, primarily focused on providing compressed air for different applications. Supplying high-pressure air for tools, inflating tires, and providing air for pneumatic devices are all standard functions of air compressors. Each of these uses capitalizes on the ability of an air compressor to convert electrical energy into mechanical energy by compressing air and then utilizing that stored air for various tasks.

Generating electricity, however, is not a function of air compressors. While compressed air can be used to drive an air turbine to generate electricity, this process involves additional machinery specifically designed for power generation, and it does not fall within the typical scope of what an air compressor does. Thus, the correct answer highlights this distinction by identifying electricity generation as outside the direct operational functions of air compressors.