Specific speed for a centrifugal pump is___________________?
Specific speed for a centrifugal pump is___________________?
A. N √Q/H3/4
B. N √Q/H2/3
C. N3D5/H1/3
D. N √Q/H
Fluid Mechanics for Chemical
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For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to____________________?
For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to____________________?A. R
B. R2
C. R4
D. R0.5 -
The fluid jet discharging from a 2″ diameter orifice has a diameter of 1.75″ at its venacontracta. The co-efficient of contraction is___________________?
The fluid jet discharging from a 2″ diameter orifice has a diameter of 1.75″ at its venacontracta. The co-efficient of contraction is___________________?A. 1.3
B. 0.766
C. 0.87
D. None of these -
In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?
In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?A. Constant along a streamline
B. Not constant along a streamline
C. Increased in the direction of flow
D. None of these -
A Newtonian liquid (ρ = density, μ = viscosity) is flowing with velocity „v‟ in a tube of diameter ‘D’. Let Δp be the pressure drop across the length ‘L’. For a laminar flow, Δp is proportional to_________________?
A Newtonian liquid (ρ = density, μ = viscosity) is flowing with velocity „v‟ in a tube of diameter ‘D’. Let Δp be the pressure drop across the length ‘L’. For a laminar flow, Δp is proportional to_________________?A. Lρv2/D
B. LμV/D2
C. Dρv2/L
D. μV/L -
An equipotential line is _____________ to the velocity vector at every point?
An equipotential line is _____________ to the velocity vector at every point?A. Normal
B. Parallel
C. Tangential
D. None of these -
The nominal size of a hose pipe is specified by its _________________?
The nominal size of a hose pipe is specified by its _________________?A. I.D.
B. O.D.
C. Thickness
D. None of these -
The equivalent diameter for pressure drop calculation for a fluid flowing through a rectangular cross-section channels having sides ‘x’ & ‘y’ is given by_________________?
The equivalent diameter for pressure drop calculation for a fluid flowing through a rectangular cross-section channels having sides ‘x’ & ‘y’ is given by_________________?A. 2xy/(x + y)
B. xy/(x + y)
C. (x + y)/2xy
D. (x + y)/xy -
For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is________________?
For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is________________?A. More
B. Less
C. Equal
D. Independent of porosity -
Each term in Bernoulli‟s equation represents the _____________ of the fluid?
Each term in Bernoulli‟s equation represents the _____________ of the fluid?A. Energy per unit mass
B. Energy per unit weight
C. Force per unit mass
D. None of these