Final answer:
Torches with special washing heads that have air orifices on one side of the electrode are limited to cutting from two directions. This design restricts the torch's movement, affecting the cut's efficiency and quality.
Step-by-step explanation:
Torches with special washing heads in which the air orifices are located on one side of the electrode are limited to cutting from two directions. This design means that the cutting torch has a preferred way to be positioned in relation to the workpiece, thereby confining its movement to two opposite directions.
It's crucial for students to understand that the arrangement of these air orifices affects the efficiency and quality of the cut that can be produced by such torches. In contrast, if a torch had a more symmetrical design with air orifices distributed evenly around the electrode, it would allow for greater flexibility in cutting direction.