Engineering :: Fluid Mechanics and Hydraulic Machines

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The normal stress is the same in all directions at a point in fluid

[A].	Regardless of the motion of one fluid layer relative to an adjacent layer	[B].	When there is no motion of one fluid layer relative to an adjacent layer
[C].	Only when the fluid is frictionless	[D].	Only when fluid is frictionless and incompressible
[E].	Only when the fluid has zero viscosity and is at rest

Answer: Option B