How many variable capacitance fuel quantity probes are located in the upper and lower cells?

How many variable capacitance fuel quantity probes are located in the upper and lower cells?

• A. Two
• B. Three
• C. Four
• D. Five

Answer: (D)

The correct answer indicates that there are five variable capacitance fuel quantity probes located in the upper and lower cells of the fuel system. Typically, these probes are strategically positioned to provide precise measurement of fuel levels in both the upper and lower cells, allowing for an accurate assessment of the total fuel quantity available. The variable capacitance design enables these probes to measure changes in the dielectric constant of the fuel, which varies based on the fuel's level in the tank. Accurate fuel quantity data is crucial for flight operations, ensuring that pilots and crew are aware of fuel availability during missions. Having five probes suggests a redundancy or precise measurement capability across both cells, contributing to greater operational safety and efficiency. In contrast, the other choices do not reflect the actual design of the fuel system, which has been engineered for optimal performance and safety. The inclusion of multiple probes is essential for accurate readings, especially in larger fuel systems where variability can be significant.

The correct answer indicates that there are five variable capacitance fuel quantity probes located in the upper and lower cells of the fuel system. Typically, these probes are strategically positioned to provide precise measurement of fuel levels in both the upper and lower cells, allowing for an accurate assessment of the total fuel quantity available.

The variable capacitance design enables these probes to measure changes in the dielectric constant of the fuel, which varies based on the fuel's level in the tank. Accurate fuel quantity data is crucial for flight operations, ensuring that pilots and crew are aware of fuel availability during missions. Having five probes suggests a redundancy or precise measurement capability across both cells, contributing to greater operational safety and efficiency.

In contrast, the other choices do not reflect the actual design of the fuel system, which has been engineered for optimal performance and safety. The inclusion of multiple probes is essential for accurate readings, especially in larger fuel systems where variability can be significant.