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The stage efficiency ( eta text S ) is given by...

This question belongs to Mechanical Engineering Steam Boilers, Engines, Nozzles And Turbines
Steam Boilers, Engines, Nozzles and Turbines
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The stage efficiency ($${\eta _{\text{S}}}$$) is given by (where $${\eta _{\text{B}}}$$ = Blading efficiency and $${\eta _{\text{N}}}$$ = Nozzle efficiency)

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Correct Answer: Option A
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