inal Exam 100 Points Name True / False questions. Answer the following question

Question

inal Exam 100 Points Name True / False questions. Answer the following question w 2.5 points each Student Number ith either"I" for true or .p for false A fluid is a substance that will continuously deform when exposed to a shear stress Viscosity is the proportionality factor that relates the shear stress to velocity distribution. The apparent viscosity for a pseudoplastic fluid increases with increasing deformation rate. The fluid velocity profile in the boundary layer region of a fluid adjacent to solid surface is a source of shear stress. A Bingham plastic is a fluid that behaves as a solid until a minimum yield stress is exceeded. A pathline is the path or trajectory traced out by a moving fluid particle. Streamlines, pathlines and streaklines are the same in an unsteady flow field are lines drawn tangent to direction of flow at every point in a flow field. is also representative of the ideal notion of frictionless flow. ble flow is a subset of viscous flow whereby the fluid density remains Compressilb constant

Explanation / Answer

1 True : A fluid is substance that continuously deform when exposed to shear stress

2 False : Viscosity is basicall ratio of shear stress / shear strain

3 False: for psedoplastic viscosity decrease as we increase deformation

4 True: fluid velocity profile is source of shear stress adjacent to solid surface

5 True : Binghum plastic need minimum stress

6 True : path line is trajectory trace by fluid particle

7 False: stream line, pathline, streak line will be same in steady state flow

8 True: stream line is tangent drawn to direction of flow

9 true: laminar flow is ideal flow or friction less flow

10 false: in compressible flow density changes

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