Primary Systems 2 Practice Test

If the collector tank is depleted during ground refueling, what happens to the fuel from wing tanks?

No movement occurs Fuel will gravity feed from wing tanks to the collector tank Fuel will be pumped into wing tanks Only air will enter collector tank

Correct Answer:

Fuel will gravity feed from wing tanks to the collector tank

Explanation:

When the collector tank runs dry, fuel will flow from the wing tanks into it by gravity. The wing tanks are at a higher elevation and are connected to the collector tank through fuel lines, so with the collector empty there’s a downward pressure head that causes remaining fuel in the wing tanks to drain into the collector without needing pumps. This keeps the collector supplied so fuel can continue to be drawn from it as needed. The other options don’t fit because there is a natural gravity-driven flow path between the tanks, not a halt in movement, not pumping fuel into the wings, and not air alone entering the collector.

Access more questions from this quiz

Continue to Primary Systems 2 Practice Test for more practice questions and the full quiz experience.

Access More Questions