Flow through fixed (stator) blades in a reaction turbine When steam flows through the fixed blades (nozzle passages) of a reaction turbine, how do pressure and velocity change? Choose the correct option.
Mechanical Engineering
Steam Nozzles and Turbines
Difficulty: Easy
Choose an option
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APressure increases while velocity decreases
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BPressure decreases while velocity increases
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CPressure and velocity both decrease
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DPressure and velocity both increase
Answer
Correct Answer: Pressure decreases while velocity increases
Explanation
ConceptIn a reaction turbine, the fixed blades act as nozzles. Across a nozzle, steam expands: pressure drops and kinetic energy (hence velocity) rises.
ThereforePressure ↓, Velocity ↑
Final AnswerPressure decreases while velocity increases