Hydraulics And Fluid Mechanics Set 2

only when the fluid is frictionless ✘ only when the fluid is incompressible and has zero viscosity ✘ when there is no motion of one fluid layer relative to an adjacent layer ✘ irrespective of the motion of one fluid layer relative to an adjacent layer ✔

more ✘ less ✘ same ✘ more or less depending on size of glass tube ✔

the area is horizontal ✘ the area is vertical ✘ the area is inclined ✘ all of the above ✔

1 Pa ✘ 91 Pa ✘ 981 Pa ✘ 9810 Pa ✔

the direction and magnitude of the veiocity at all points are identical ✘ the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time ✘ the magnitude and direction of the velocity do not change from point to point in the fluid ✘ the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane ✔

the direction and magnitude of the velocity at all points are identical ✘ the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time ✘ the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane ✘ velocity, depth, pressure, etc. change from point to point in the fluid flow. ✔

H1/2 ✘ H3/2 ✘ H5/2 ✘ H ✔

specific weight ✘ specific mass ✘ specific gravity ✘ specific density ✔

surface tension ✘ viscosity ✘ friction ✘ cohesion ✔

has constant viscosity ✘ is incompressible ✘ is of theoretical interest ✘ none of the above. ✔