A. Flow rate
B. Mean velocity
C. Both ‘a’ & ‘b’
D. Neither ‘a’ nor ‘b’
Correct Answer: Mean velocity ✔
Last Updated: March 10, 2019
Related MCQs
- Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, ζ = surface tension of mercury)__________?
- Shear stress in a fluid flowing in a round pipe__________?
- Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m3, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is__________?
- For the transfer of solution of thick slurry, the pump used is a __________ pump?
- In fluid flow, cavitation is caused, if the__________?
- Cavitation can be prevented by__________?
- Sewage sludge is __________ type of non-Newtonian fluid?
- At high Reynolds number__________?
- Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the__________?
- Head developed by a centrifugal pump depends on its__________?
- Pump used for the transportation of molten sodium in a fast breader reactor is a/an __________ pump?
- Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ?
- The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to __________ in Stoke’s law regime?
- Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be __________ ft?
- For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is__________?
- A piezometer opening measures the __________ fluid pressure?
- The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10-6m2/s) ?
- A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity ?
- With increase in the shear rate, the apparent viscosity of pseudo-plastic fluids__________?
- If the discharge of a centrifugal pump is throttled, then its suction lift__________?
- Kinetic energy of fluid per unit weight represented by the velocity head is given by__________?
- Water hammer in a pipeline results from the__________?
- Mass velocity is independent of temperature & pressure, when the flow is__________?
- Permanent loss in a Venturimeter is about __________ percent of the pressure drop in the upstream cone?
- The uniformity of a gas fluidised bed depends upon the __________ of the solid particles?
- Most of the centrifugal pumps used in chemical plants are usually __________ driven?
- Remote control valve is a __________ valve?
- With increase in temperature, the vapor pressure of liquids__________?
- Medium viscosity lubricating oil can be most ideally pumped by a __________ pump?
- Differential manometer measures the__________?
- The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost is P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet ?
- Velocity distribution for flow between two fixed parallel plates__________?
- Upto what value of ‘Mach number’, a fluid may be considered as incompressible ?
- Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter ‘d’ ?
- Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the __________?
- The equivalent diameter for flow through a rectangular duct of width B and height H is__________?
- A Rotameter works on the principle of __________ pressure drop?
- The energy equation, E + (p/ρ) + (V2/2g) + gZ = constant (E = internal energy/mass), is applicable to__________?
- The hydrodynamic and thermal boundary layers will merge, when __________?
- The velocity profile exhibited by laminar flow of Newtonian fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe?
- A centrifugal pump is called a turbine pump, if it is having a__________?
- In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure __________ the vapor pressure of the liquid at the suction temperature?
- A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be __________ cms?
- Power required for mixing Newtonian fluids is a function of the __________?
- Which of the following properties of a fluid is responsible for offering resistance to shear ?
- Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of __________ flow type?
- The Mach number for hypersonic flow of compressible fluid is__________?
- Priming is needed in a __________ pump?
- The head developed by a centrifugal pump is largely determined by the__________?
- Applying a pressure drop across a capillary results in a volumetric flow rate ‘Q’ under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is__________?
- A stream tube is that, which has __________ cross-section entirely bounded by stream lines?