What happens to the fuel when the dump valve is activated in an aircraft turbine engine?

When the dump valve is activated in an aircraft turbine engine, the primary action that occurs is the quick draining of fuel from the nozzles. The dump valve is designed to allow excess fuel to exit the fuel system, preventing flooding of the combustion chamber and ensuring proper engine operation. This helps maintain optimal fuel flow and pressure by removing fuel that might otherwise interfere with the combustion process.

This mechanism is crucial, particularly when the engine is shut down or in situations where the supplied fuel exceeds the demand. Thus, the function of the dump valve plays a vital role in managing fuel delivery effectively, ensuring that the engine operates efficiently and safely. This is why the answer regarding the rapid drainage of fuel from the nozzles is indeed correct.