HYDRAULICS & FLUID MECHANICS QUIZ

independent of shear stress

zero at the pipe wall

maximum at the pipe wall

None of these

a circular disc or plate held normal to flow

a sphere

an airfoil

a cylinder

(ii) and (iii)

(i), (ii) and (iii)

(i) and (iii)

(i) and (ii)

None of these

always above the centroid of the area

at the centroid of the submerged area

always below the centroid of the area

make an angle in direction of inclination of inclined plane

be horizontal

make an angle in opposite direction to inclination of inclined plane

any one of above is possible

force of diffusion

force of friction

force of cohesion

force of adhesion

All of these

suspended matter

dissolved air

dissolved salt

weight of liquid vertically above the curved surface

force on a vertical projection of the curved surface

force on the horizontal projection of the curved surface

product of pressure intensity at its centroid and area

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 direction and magnitude of the velocity at all points are identical

the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

has the same shear stress.at a point regardless of its motion

cannot be subjected to shear forces

cannot remain at rest under action of any shear force

always expands until it fills any container