Question

Hydraulic ventilation involves using a spray nozzle set on a ___ pattern to draw the smoke out an opening such as a window or door. a. fog b. horizontal c. vertical d. fan

Answer 1

Hydraulic ventilation involves using a vertical spray nozzle pattern to draw out smoke from an opening like a window or door.

Step-by-step explanation:

Hydraulic ventilation involves using a spray nozzle set on a vertical pattern to draw the smoke out an opening such as a window or door. This technique utilizes the principle of entrainment, where increased fluid speed creates low pressures, which then entrain one fluid into another. Examples of entrainment devices include a Bunsen burner, atomizers, and aspirators. In the context of hydraulic ventilation, a spray nozzle set on a vertical pattern can effectively create a low-pressure zone to draw out smoke from an opening.

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