Stage efficiency relation: combining nozzle and blade efficiencies Given nozzle efficiency (η N ) and blading efficiency (η B ), express the stage efficiency (η S ). Choose the correct option.

Q: Stage efficiency relation: combining nozzle and blade efficiencies Given nozzle efficiency (η N ) and blading efficiency (η B ), express the stage efficiency (η S ). Choose the correct option.

Concept Stage efficiency reflects cumulative losses in both the nozzle and the moving blades. Assuming the losses are independent, the overall (stage) efficiency is the product: ηS = ηN × ηB Final Answer ηS = ηB × ηN

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Stage efficiency relation: combining nozzle and blade efficiencies Given nozzle efficiency (ηN) and blading efficiency (ηB), express the stage efficiency (ηS). Choose the correct option.

Difficulty: Easy

η_S = η_B × η_N
η_S = η_B/η_N
η_S = η_N/η_B
None of these

Correct Answer: η_S = η_B × η_N

Explanation:

Concept
Stage efficiency reflects cumulative losses in both the nozzle and the moving blades. Assuming the losses are independent, the overall (stage) efficiency is the product:

η_S = η_N × η_B

Final Answer
η_S = η_B × η_N

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Stage efficiency relation: combining nozzle and blade efficiencies Given nozzle efficiency (η<sub>N</sub>) and blading efficiency (η<sub>B</sub>), express the stage efficiency (η<sub>S</sub>). Choose the correct option.

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