Drag co-efficient for motion of spherical particles in a stationary fluid in the stoke’s law range is_________________?

A. More
B. Less
C. Equal
D. Either A. or B.; depends on the viscosity of the fluid

A. N √Q/H3/4
B. N √Q/H2/3
C. N3D5/H1/3
D. N √Q/H

A. 0
B. 1
C. ∞
D. 0.5

A. Pipe length
B. Fluid velocity in the pipe
C. Time taken to close the valve
D. All A., B. and C.

A. The line connecting the mid-points of flow cross-sections
B. Defined for uniform flow only
C. Drawn normal to the velocity vector at every point
D. Always the path of a particle

A. 1
B. 1.5
C. 2
D. 2.5