Category: Fluid Mechanics

A. the direction and magnitude of the veiocity at all points are identical
B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
C. the magnitude and direction of the velocity do not change from point to point in the fluid
D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
E. velocity, depth, pressure etc. change from point to point in the fluid flow

A. 2.4 m above the hydraulic gradient
B. 6.4 m above the hydraulic gradient
C. 10.0 m above the hydraulic gradient
D. 5.0 above the hydraulic gradient
E. none of the above

A. The center of buoyancy is located at the center of gravity of the displaced liquid
B. For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy
C. If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions
D. For stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy
E. All floating bodies are stable

A. resistance to shear stress is small
B. fluid pressure is zero
C. linear deformation is small
D. only normal stresses can exist
E. viscosity is nil

A. has constant viscosity
B. has zero viscosity
C. is in compressible
D. is of theoretical interest
E. none of the above

A. it is incompressible
B. it has uniform viscosity
C. it has zero viscosity
D. it is frictionless
E. it is at rest

A. acts in the plane of the interface normal to any line in the surface
B. is also known as capillarity
C. is a function of the curvature of the interface
D. decreases with fall in temperature
E. has no units

A. 1 : 5
B. 1 : 2.5
C. 1 :25
D. 1:V5″
E. 1 : 53/2

A. sin 9
B. sin 9
C. cas 9
D. cos 9
E. tan 9