What is the third stage of the Brayton cycle?
A. Expansion
B. Compression
C. Heat addition
D. Heat rejection
A. Correct. In the third stage, the high-pressure, high-temperature gas applies force to the turbine blades, which does work by turning the shaft.
B. Incorrect. In the first stage of the Brayton cycle, the hot compressed air enters the combustion chamber, where fuel is added.
C. Incorrect. In the second stage, the fuel is burned.
D. Incorrect. In the final stage, gas exits through the exhaust and heat recovery takes place.
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