A. Increases
B. Decreases
C. Remain same
D. May increase or decrease
A. The length of entrance region of pipe, in which full development of fluid flow takes place
such that velocity profile does not change downstream, is called the transition length
B. Transition length for laminar flow of Newtonian fluids in a pipe of diameter ‘d’ is equal to
0.05. D.NRe
C. Transition length for turbulent flow of Newtonian fluids in a smooth pipe of diameter ‘d’ is
equal to 50 D
D. All A., B. and C.
A. Water surface
B. Centre of gravity
C. Centre of buoyancy
D. None of these
A. Which follows Newton’s law of motion
B. Which needs a minimum shear, before it starts deforming
C. For which shear & deformation are related as T = μ (∂u/∂y)
D. None of these
A. Barometric pressure
B. Speed of the impeller
C. Diameter of the impeller
D. Both B. and C.
A. Fluid to that of the light
B. Light to that of the fluid
C. Fluid to that of the sound
D. Sound to that of the fluid
A. Zero at the pipe wall and is a universal constant
B. Independent of radial distance from the pipe axis
C. Independent of the shear stress
D. Useful for computing laminar flow problems