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Which risk increases significantly when a turbine operating in a closed Brayton cycle experiences unexpected surge?

A)Compressor blade fatigue failure
B)Exhaust gas temperature reduction
C)Combustor flame stabilization
D)Increased turbine power output

💡 Explanation

Compressor blade fatigue failure risks increase because surge introduces high-frequency pressure oscillations that cause resonant blade excitation, thus accelerating fatigue crack propagation. Therefore, blade failure is amplified rather than combustion or performance changes which need sustained different conditions.

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