1.

In real life, zero drag is acceptable.(a) True(b) FalseI had been asked this question in an online interview.Query is from Nonlifting Flow over Cylinder topic in chapter Inviscid & Incompressible Flow of Aerodynamics

Answer»

The correct OPTION is (B) False

The best explanation: In real life, zero drag is not acceptable because we know that drag is produced due to viscous effects which generate frictional shear stress at the BODY surface and which cause the flow to separate from the surface on the back of the body and thus large wake downstream is CREATED destroying the symmetry of the flow.



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