Question 56Gas Turbine - Assistant Engineer70% to pass
For the GE LM2500 gas turbine engine shown in the illustration, the HP turbine 1st stage nozzle vanes are cooled by which of the following? Illustration GT-0020
AI Explanation
The correct answer is D) 16th stage compressor air.
The HP turbine 1st stage nozzle vanes in the GE LM2500 gas turbine engine are cooled by the 16th stage compressor air. This is because the 16th stage compressor air has the highest pressure and temperature, making it the most suitable source for cooling the high-pressure turbine components that are exposed to the highest temperatures in the engine.
The other options, A) 8th stage, B) 9th stage, and C) 13th stage compressor air, are not correct because they do not have the necessary pressure and temperature characteristics to effectively cool the HP turbine 1st stage nozzle vanes.
Related Questions
#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 #57 For the GE LM2500 gas turbine engine shown in the illustration, the HP turbine 2nd stage blades are cooled by convection, with the cooling air being discharged where? Illustration GT-0011 #58 Turbine disks are commonly attached to the shaft by which of the following methods? #59 To keep the exit pressures relatively constant across a HP turbine blade, which type of construction is generally utilized?