Mechanical Engineering - Steam Nozzles and Turbines - Discussion

5. 

The pressure at which the steam leaves the nozzle is known as back pressure.

[A]. Correct
[B]. Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Krishan Pal said: (Nov 14, 2014)  
It is also known as critical velocity.

M Asim said: (Sep 26, 2015)  
It is exit pressure not back p.

Back p is the pressure out side the nozzle at exit.

Mvk said: (May 24, 2016)  
Back pressure is mostly appicable for last stage in turbine.

Anjani said: (Nov 6, 2016)  
The inlet conditions of the gas are at the stagnation state (p0, T0) which are constants. The pressure at the exit plane of the nozzle is denoted by PE and the back pressure is PB which can be varied by the adjustment of the valve.

Chandra Prakash said: (Oct 2, 2018)  
Back pressure is developed due to steam strike on blade. It's exit of pressure not back pressure.

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