Mechanical Engineering - Hydraulic Machines - Discussion


The discharge through a reaction turbine __________ with the increase in unit speed.

[A]. remains same
[B]. increases
[C]. decreases

Answer: Option C


No answer description available for this question.

Dos said: (Jan 14, 2014)  
As Qu=Q/root of H and Nu=N/root of H, so we can get that Q=Qu*N/Nu.

For that discharge decreases with increase in unit speed.

Manoj said: (Dec 7, 2017)  
You are right @Dos.

Anomie said: (Jul 16, 2019)  

It increases for Kaplan and decreases for Francis.

Jaya said: (Aug 7, 2019)  
How? Explain @Manoj.

Ruthraa said: (May 27, 2020)  

As Qu=Q/√ H and Nu=N/√H, so we can get that Q=Qu*Nu/N.

For that discharge increases with an increase in unit speed. Am I right?

Kajal Patil said: (Aug 16, 2020)  
No @Ruthraa.

Discharge (Q) is inversely proportional to Unit speed (Nu).

Chandi said: (Feb 20, 2021)  

Yes! You are right. Thanks.

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