Question

To perform hydraulic ventilation, a fog nozzle should be set on a wide fog pattern to cover what percent of the opening through which the smoke will be drawn or pulled? a. 85 to 90 b. 55 to 60 c. 45 to 50 d. 15 to 20

Answer 1

For hydraulic ventilation, a fog nozzle should cover 85 to 90 percent of the opening to efficiently draw smoke out.

Step-by-step explanation:

To perform hydraulic ventilation, a fog nozzle should be set on a wide fog pattern to cover a specific percentage of the opening through which the smoke will be drawn or pulled. The correct answer is that the fog nozzle should cover 85 to 90 percent of the opening. This wide coverage ensures that the fog pattern creates a sufficient air flow to draw the smoke out of the structure, effectively clearing the space of smoke and improving visibility and air quality inside.