The yellow light on the HUD indicates which pressure?

The yellow light on the HUD indicates which pressure?

• A. 4000 psi or 3/4
• B. 1800 psi or 1/3
• C. 2750 psi or 1/2
• D. 2250 psi

Answer: (C)

The main idea here is that the HUD uses color cues to show how much air is left. A yellow light signals the mid-range, a warning that you’re about halfway through your air and should start planning for a safe exit or a buddy air exchange. On this particular HUD, that mid-range corresponds to about 2750 psi, i.e., roughly half of the tank’s capacity. Why this fits best: 2750 psi is the value shown with the yellow indicator, marking the halfway point and prompting caution. The other pressures would typically map to different HUD signals (for example, a higher pressure would usually be green, indicating plenty of air; a much lower pressure would be red or another alert), so they don’t align with the yellow cue in this system.

The main idea here is that the HUD uses color cues to show how much air is left. A yellow light signals the mid-range, a warning that you’re about halfway through your air and should start planning for a safe exit or a buddy air exchange. On this particular HUD, that mid-range corresponds to about 2750 psi, i.e., roughly half of the tank’s capacity.

Why this fits best: 2750 psi is the value shown with the yellow indicator, marking the halfway point and prompting caution. The other pressures would typically map to different HUD signals (for example, a higher pressure would usually be green, indicating plenty of air; a much lower pressure would be red or another alert), so they don’t align with the yellow cue in this system.