Question 231Steam Plants - Assistant Engineer

The correct answer is D) stationary air foil or blade cone. In an air register assembly, the majority of air passes through the stationary air foil or blade cone. This is because the stationary air foil or blade cone is designed to direct and control the airflow, allowing it to pass through the assembly efficiently. The other components, such as the atomizer assembly, diffuser or impeller, and distance piece, serve different functions within the overall air register assembly, but do not handle the majority of the airflow. The other answer choices are incorrect because they do not represent the primary airflow path in the air register assembly.