Chemical Engineering - Process Control and Instrumentation - Discussion

10. 

Flapper nozzle is used in a/an __________ controller.

[A]. electronic
[B]. hydraulic
[C]. pneumatic
[D]. none of these

Answer: Option C

Explanation:

No answer description available for this question.

M.Thabasoom said: (Sep 19, 2013)  
Why because it is converted into mechanical motion to pressure signal and also the displacement of flapper plate moving is proportional to the pressure due to the position of the flapper from the nozzle.

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