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Steam nozzle losses — where friction is assumed to act In a practical analysis of a convergent–divergent steam nozzle, the entire frictional loss is assumed to occur in a specific region of the nozzle. Identify that region.

Difficulty: Easy

Between inlet and throat
Between inlet and outlet
Between throat and exit
All along the length equally

Correct Answer: Between throat and exit

Explanation:

Concept/Approach

In steam nozzles, boundary layer growth and condensation effects are most significant in the divergent portion, i.e., from throat to exit; analyses often lump friction there.
Assuming losses concentrated after the throat simplifies modeling of velocity loss and exit pressure for choked flow.

Final Answer
Between throat and exit

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