Question 52Gas Turbine - Assistant Engineer70% to pass
For the GE LM2500 gas turbine shown in the illustration, the 9th stage bleed air is used for which of the following? Illustration GT-0017
AI Explanation
The correct answer is C) Power turbine cooling.
The 9th stage bleed air from the GE LM2500 gas turbine is used for power turbine cooling. The power turbine is responsible for extracting power from the high-pressure turbine exhaust to drive the compressor. Directing the high-pressure, high-temperature 9th stage bleed air to the power turbine helps cool the blades and other components, improving efficiency and preventing thermal damage.
The other answer choices are incorrect because: A) is for the high-pressure turbine, not the power turbine; B) is for the compressor balance piston, not the power turbine; and D) is for sump pressurization and cooling, not the power turbine.
Related Questions
#50 As shown in the illustration of a gas turbine fuel oil system, when the engine fuel oil valves are de-energized, the remaining fuel left in the system is recirculated back to which of the following? Illustration GT-0021 #51 What is the primary function of the main fuel control on the GE LM2500 gas turbine engine? #53 For the GE LM2500 gas turbine engine shown in the illustration, the 13th stage bleed air is used for which of the following? Illustration GT-0017 #54 In order to get a ready indication for a normal start with an GE LM2500 gas turbine engine, what permissive(s) must be met? #55 For the GE LM2500 gas turbine engine shown in the illustration, the HP turbine 2nd stage nozzle vanes are cooled by which of the following? Illustration GT-0020