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← ScienceWhich mechanism causes rapid pressure drop in turbines?
A)Expansion generates kinetic energy
B)Nozzle area reaches sonic limit✓
C)Compressor blades face stall
D)Fuel injection causes detonation
💡 Explanation
Turbine pressure drops with supersonic local flow because the choked flow mechanism limits mass flow. Nozzle area limits expansion, therefore, pressure reduction is constrained after that, rather than kinetic energy solely causing the drop.
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