Mock Exam Diagram 1.pdf Refer to Drawing #1. Items 2 and 12 would be best described as ________.

• A. zone valve sensors
• B. pressure indicators
• C. area alarm sensors
• D. master alarm sensors

Answer: (C)

The concept being tested is recognizing localized alarm devices in a medical gas system. Items that are best described as area alarm sensors are those placed to monitor a specific room or zone and alert staff within that area when there’s a gas pressure issue or potential hazard. They provide immediate, localized notification, which is essential for rapid response in individual spaces. This differs from zone valve sensors, which track whether a particular valve is open or closed; from pressure indicators, which merely display pressure values without necessarily sounding an alarm; and from master alarm sensors, which feed into a central alarm for the whole facility rather than a single area. So items 2 and 12 are area alarm sensors because their role is to warn staff in a defined area about gas-related problems.