Ryanair Initial Practice Exam

What must the green indicator light on a smoke detector demonstrate?

1. It can be on or off.

2. It should be flashing.

3. It must be on and steady.

4. It must be changed regularly.

The correct answer is: It must be on and steady.

The green indicator light on a smoke detector serves a vital function indicating that the device is powered and operational. When the light is on and steady, it signifies that the smoke detector is functioning correctly and is actively monitoring for smoke. This is essential for ensuring safety, as it assures users that the device is ready to detect smoke and alert them in case of a fire. A steady green light provides reassurance as opposed to an intermittent or off state, which could imply a malfunction, low battery, or that the device is not operational. It is important to regularly check the status of the light to maintain safety standards in an environment where fire risks are present. While other options reflect common aspects of smoke detector maintenance or operational states, they do not specifically denote a proper functioning condition in the context of the green indicator light. Therefore, a steady green light must be present to confirm that the smoke detector is up and running, making this the correct answer.