Massachusetts Wastewater Practice Exam

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What is a common response to a low air alarm on an SCBA?

Adjusting the mask.
Seeking help.
Taking a break.
Immediate evacuation.

The correct answer is: Adjusting the mask.

In the context of responding to a low air alarm on a Self-Contained Breathing Apparatus (SCBA), adjusting the mask is a common and appropriate response. When a low air alarm sounds, it typically indicates that the air supply is depleting, which requires the user to ensure that they are receiving adequate airflow. Adjusting the mask can help secure the seal and ensure that the user is not experiencing any leaks that could further compromise their air supply. While other actions may be relevant in a broader scenario, they do not address the immediate concern of maintaining an adequate air supply. For example, seeking help might be a response in some situations, but it does not directly mitigate the urgency of the low air alarm. Taking a break is not suitable as it would delay the necessary response to a potentially critical situation. Immediate evacuation could be a necessary step depending on the situation, but adjusting the mask is an initial and proactive measure that allows the user to potentially conserve air and maintain safety longer while determining the best course of action.