Which of the following is NOT a type of oil burner?

The correct answer identifies atmospheric burners as not being a type of oil burner. Atmospheric burners primarily operate by mixing gas with air before combustion in an open atmosphere, which is different from oil burners that rely on a specific process to atomize oil for efficient burning.

Centrifugal or rotary cup burners, mechanical or pressure atomizing burners, and steam atomizing burners are specifically designed for burning oil. Each of these types employs different mechanisms to create a fine mist or spray of oil, which allows for better combustion and efficiency.

In contrast, atmospheric burners do not involve the atomization of liquid fuel, focusing instead on gaseous fuels that are readily mixed with air. This fundamental difference in fuel type and operation defines why atmospheric burners do not belong in the category of oil burners, as oil burners are explicitly meant to handle liquid fuel.