Question 53 ONC01 - Master/Chief Mate Unlimited Tonnage

The Correct Answer is C ### Why Option C ("shut") is Correct: On most standard all-purpose or adjustable firefighting nozzles, the flow control is directly linked to the position of the handle. The **forward position** (handle pushed fully forward toward the tip of the nozzle) is the standard mechanical mechanism designed to fully close the valve, thereby stopping the flow of water. This position is universally recognized as the **"shut"** or "off" position. ### Why the Other Options are Incorrect: * **A) spray:** The "spray" setting (often an intermediate setting between fog and straight stream, or simply referring to a wide dispersal pattern) is usually achieved by partially opening the nozzle valve and adjusting the internal baffle or shroud, which typically occurs when the handle is pulled back an intermediate distance or adjusted via a rotating mechanism (if present). It is not the position associated with the handle being all the way forward. * **B) solid stream:** The solid stream (or straight stream) setting typically requires the valve to be fully or nearly fully open to maximize flow and reach. This position is achieved when the handle is pulled **all the way back** (or toward the operator), not when it is all the way forward. * **D) fog:** The "fog" setting is a pattern that disperses water into fine droplets. Like the solid stream, this setting requires the valve to be open to allow water flow. Therefore, the handle cannot be in the fully forward (shut) position to achieve a fog pattern. The fog pattern is usually achieved when the handle is pulled back and the adjustable front components are positioned correctly.