Final answer:
The "LOW" light on the Total Fuel Indicator appears when the fuel level in the tank is below a certain threshold, indicating low fuel. Similarly, "LOW FUEL" on the WAP appears when the fuel level is critically low and requires immediate attention. "LOW" on the Total Fuel Panel indicates that the fuel level is below a certain level, signaling the need for refueling.
Step-by-step explanation:
Fuel Indicator Lights
The "LOW" light on the Total Fuel Indicator appears when the fuel level in the tank is below a certain threshold, indicating low fuel. Similarly, "LOW FUEL" on the WAP (Warning and Advisory Panel) appears when the fuel level is critically low and requires immediate attention. Additionally, "LOW" on the Total Fuel Panel indicates that the fuel level is below a certain level, signaling the need for refueling.
Example
As an example, let's say the Total Fuel Indicator has a range from 0 to 100, with 0 indicating empty and 100 indicating full. If the "LOW" light is set to appear at 20, it will illuminate when the fuel level drops below 20, signifying low fuel.