A. Single stage vertical
B. Centrifugal
C. Plunger
D. Diffuser
A. Mean flow velocity is about 0.5 times the maximum velocity
B. Velocity profile becomes flatter and flatter with increasing Reynolds number
C. Point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius)
D. Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity
profile at the wall are more
A. V1.8
B. V-0.8
C. V
D. V-1
A. kg/hr
B. kg/m2. hr
C. kg/m2
D. kg/m3. hr
A. NPSH required
B. BHP required by the pump
C. Head of the liquid pumped
D. All A., B. and C.
A. Kinetic head gets converted into static head
B. Moving stream gradually reduces velocity
C. Mean velocity remains constant
D. None of these
A. Directly as
B. Inversely as square root of
C. Inversely as
D. As square of