Final answer:
The indication of an ON light on the BLUE/YELLOW ELEC PUMP pushbutton means that the electric pump is currently active and providing hydraulic power.
Step-by-step explanation:
An ON light indication on the BLUE/YELLOW ELEC PUMP pushbutton typically suggests that the respective electric pump is active and supplying hydraulic power within the system. In the context of aviation, for instance in Airbus aircraft, the blue and yellow hydraulic systems can each be powered by an electric pump.
When the pushbutton's ON light is illuminated, it means the electric pump has been engaged and is functioning to maintain the required hydraulic pressure in that particular system.
In hydraulic systems, indicators serve various purposes to monitor and ensure the proper functioning of the system. These indicators are essential for maintenance, safety, and operational awareness. Here are some common types of hydraulic system indicators:
Pressure Gauges:
Pressure Indicators: These gauges measure the pressure within the hydraulic system. They provide real-time information on the system's pressure levels, allowing operators to ensure that the pressure remains within safe operating limits.