Mechanical Engineering - Steam Nozzles and Turbines - Discussion

20. 

In a reaction turbine, when steam flows through the moving blades,

[A]. pressure increases while velocity decreases
[B]. pressure decreases while velocity increases
[C]. pressure and velocity both decreases
[D]. pressure and velocity both increases

Answer: Option C

Explanation:

No answer description available for this question.

Manoj said: (Nov 29, 2017)  
B is the correct answer.

Rinkesh Patel said: (Dec 26, 2017)  
No, C is the correct answer because of velocity decrease in the moving blade.

The blade of moving blade is not symmetric as in impulse turbine it is in aerofoil type, so when steam pass through moving blade c/s became slightly decreases so by giving momentum of steam the velocity decreases and also pressure will decreases.

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