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Degree of reaction in an axial-flow compressor: precise definition How is the degree of reaction (R) defined for an axial-flow compressor stage? Choose the correct option.

Difficulty: Easy

Correct Answer: Static enthalpy rise in rotor to static enthalpy rise in the stage

Explanation:

Concept/Approach
For an axial-flow compressor, the degree of reaction is defined as the ratio of static enthalpy rise in the rotor to the static enthalpy rise in the entire stage (rotor + stator). Symbolically, R = (Δhstatic in rotor)/(Δhstatic in stage).


Final Answer
Static enthalpy rise in rotor to static enthalpy rise in the stage

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