Definition check: What qualifies as a convergent nozzle in fluid/steam-nozzle terminology? Identify the correct description of how the cross-sectional area changes from inlet to exit. Choose the correct option.
Mechanical Engineering
Steam Nozzles and Turbines
Difficulty: Easy
Choose an option
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AArea increases continuously from entrance to exit
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BArea decreases continuously from entrance to exit
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CArea first decreases to a throat then increases to exit
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DNone of the above
Answer
Correct Answer: Area decreases continuously from entrance to exit
Explanation
GivenQuestion asks for the definition of a convergent nozzle.
ConceptA convergent nozzle has a monotonically decreasing flow area from the inlet to the exit; a convergent–divergent (C–D) nozzle has a minimum area (throat) followed by a diverging exit section.
Final AnswerArea decreases continuously from entrance to exit.