• # question_answer              Given: ${{v}_{w\,2}}=$ velocity of whirl at outlet          ${{u}_{2}}=$Peripheral velocity of the blade tips         The degree of reaction in a centrifugal compressor equal to:                                     A) $1-\frac{{{v}_{w\,2}}}{2{{u}_{2}}}$              B) $1-\frac{{{u}_{2}}}{2{{v}_{w\,2}}}$C) $1-\frac{2{{v}_{w\,2}}}{{{u}_{2}}}$              D) $1-\frac{{{v}_{w\,2}}}{{{u}_{2}}}$

Correct Answer: B

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