Engineering :: Fluid Mechanics and Hydraulic Machines

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Select the correct statement regarding frictionless flow

[A].	In diverging conduits the velocity always decreases	[B].	The velocity is always sonic at the throat of a converging diverging tube
[C].	On supersonic flow the area decreases for increasing velocity	[D].	Sonic velocity cannot be exceeded at the throat of a converging diverging tube

Answer: Option C