What is the shear rate at the pipe wall, in case of laminar flow of Newtonian fluids in a pipe of diameter ‘D’ & length ‘L’ incurring a pressure drop ‘Δp’ with average velocity ‘Vavg’ ?

A. Decreases due to reduced viscosity
B. Decreases due to reduced vapour pressure
C. Increases due to increased vapour pressure
D. Decreases due to increased frictional resistance

A. 550 lbf.ft/second
B. 550 kgf.m/second
C. Both A. and B.
D. 550 lbf.ft./hr

A. Venturimeter
B. Orificemeter
C. Flow-nozzle
D. Δp is same for all

A. Flow in a straight line
B. Steady uniform flow
C. Unsteady uniform flow
D. A flow which does not account for changes in transverse direction

A. Directly proportional to
B. Inversely proportional to
C. Inversely proportional to the square root of
D. Independent of

A. Inlet tip of a blade curves in a direction opposite to that
B. Outlet tip of a blade curves in a direction opposite to that
C. Inlet tip of a blade is towards the direction
D. Outlet tip of a blade is towards the direction