Viscosity is the proportionality factor that relates the shear stress to the she

Question

Viscosity is the proportionality factor that relates the shear stress to the shear strain rate. Viscosity is the proportionality factor that relates the shear stress to the deformation rate. Viscosity can be considered a fluid property that is indicative of the fluid's resistance to deform. An ideal fluid is a substance that u ill continuously deform when exposed to a shear stress The density of a fluid can be calculated from its specific weight The density of a fluid can be calculated from its specific gravity The resultant force of a static fluid acting on a curved surface only acts horizontally against the surface. The specific weight of a fluid can be calculated from the inverse of the specific The no-slip condition does not apply within a viscous boundary layer The Reynolds Number is a dimensional quantity that indicates if the fluid flow is or turbulent.

Explanation / Answer

1. False, 2. True --> Viscosity relates shear stress to velocity gradient also called as deformation rate.

2. True --> Viscosity is that property which indicates the resistance to flow. When a fluid flows, it deforms.

3. False --> An ideal fluid has zero viscosity.

4. True --> Specific weight = Density x g

5. True --> Density = Specific gravity x Density of water

6. False --> The resultant force of a static fluid acting on a curved surface has both horizontal and vertical components.

7. False --> Refer 4 & 5 above

8. True --> At a viscous boundary layer, slipping of fluid lamina is bound to occur.

9. False --> Reynold's number is a dimensionless number which helps in deciding whether a flow is laminar or turbulent.

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