Mechanical Engineering - Steam Nozzles and Turbines - Discussion


In a reaction turbine, when steam flows through the fixed 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 B


No answer description available for this question.

Ankita said: (Aug 9, 2013)  
Fixed blades are only for guiding the steam and the velocity over the fixed blades remains constant.

Vijay said: (Dec 7, 2016)  
Both remain constant.

Anurup Paul said: (Mar 27, 2017)  
Right, I agree @Vijay.

M S Nayak said: (Nov 17, 2017)  
In reaction turbine we are not using nozzle so fixed blades act as the nozzle.

It guide the steam and increase the velocity.

B.Dinesh said: (Dec 24, 2018)  
I agree @MS NayaK.

Anwar Ansar said: (Jan 18, 2019)  
I too agree with you @M S Nayak.

Jonty said: (Sep 11, 2020)  
The fixed blades act as nozzles. So velocity increased and according to Euler's law: If vel. Increases pressure decreases. If this is pressure compounding: Pressure will gradually decrease and vel. Will fluctuate. So the answer is correct.

Kanchan Routh said: (Oct 1, 2020)  
In reaction turbine pressure of the steam reduce in fixed as well as moving blade but velocity increase in fixed blade and reduce in moving blade.

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