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Inside a wind tunnel, the area further decreases from A2 to A3, that section is called as _______

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Inside a wind tunnel, the area further decreases from A2 to A3, that section is called as _______

(a) Converging section

(b) Divergent section

(c) Throat section

(d) Nozzle

I have been asked this question by my college professor while I was bunking the class.

My question is based upon Incompressible Flow in Duct in portion Inviscid & Incompressible Flow of Aerodynamics

1 Answer

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Best answer
The correct choice is (b) Divergent section

The best explanation: The purpose of the diffuser is to reduce the velocity. In order to decrease the velocity, the wind tunnel is designed in such a way that the area in the divergent section decreases and the pressure in this section increases further.

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