18350. The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency)

[A]. ηS = ηB x ηN
[B]. ηS = ηB/ηN
[C]. ηS = ηN/ηB
[D]. none of these
✅ The correct answer is option A.

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