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← TechnologyWhich risk dramatically increases as a high-bypass turbofan engine's bleed air demand rises during flight?
A)Engine stall margin decreases rapidly✓
B)Increased risk heat exchanger failure
C)Fuel consumption decreases linearly
D)Decreased tailpipe NOx emissions occur
💡 Explanation
Increasing bleed air extraction reduces pressure available to the core, because this decreases the "compressor stall margin", therefore engine stall becomes likelier; rather than fuel savings, bleed air increases core load, increasing fuel burn.
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