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Which outcome occurs when a jet engine exhaust induces instabilities?

A)Increased acoustic noise production
B)Decreased turbine blade temperature
C)Improved combustion chamber mixing
D)Reduced fuel consumption rate

💡 Explanation

Turbulence transitions from laminar flow because jet engine exhaust's **shear layer instability** dramatically increases Reynolds number. This causes significant amplification of disturbances, therefore increased acoustic noise is produced, rather than lower temperatures or fuel reduction in a turbulent state.

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