Question 102Gas Turbine - 1st Asst/Chief70% to pass
In the marine gas turbine engine shown in the illustration, the HP turbine 2nd stage nozzle vanes are cooled by which of the following? Illustration GT-0020
AI Explanation
The correct answer is C) 13th stage compressor air.
In a marine gas turbine engine, the high-pressure (HP) turbine 2nd stage nozzle vanes are cooled by the 13th stage compressor air. This is because the 13th stage compressor air has a higher pressure and temperature compared to the lower stages, making it suitable for cooling the critical HP turbine components that experience high temperatures during engine operation. The other answer choices, such as frame vent bleed air (A) or air from the 9th (B) or 16th (D) stages, would not provide sufficient cooling for the HP turbine 2nd stage nozzle vanes.
Related Questions
#100 In the marine gas turbine engine shown in the illustration, the 13th stage bleed air is used for which of the following? Illustration GT-0017 #101 In the marine gas turbine engine shown in the illustration, the HP turbine 1st stage nozzle vanes are cooled by which of the following? Illustration GT-0020 #103 In order to get a ready indication for a normal start with a GE LM2500 marine gas turbine, what permissive(s) must be met? #104 Your first step in response to a gas turbine engine high lube oil sump temperature alarm would be which of the following? #105 Which of the following is the most probable cause for the sump oil to be excessively aerated on an aero-derivative main propulsion gas turbine engine?