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In a Laminar flow in pipe, the velocity is maximum at:

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UKPSC JE Civil 8 May 2022 Official Paper-II
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  1. Perimeter
  2. Center
  3. Uniform in the section
  4. None of the above

Answer (Detailed Solution Below)

Option 2 : Center
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Detailed Solution

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Velocity distribution of a flow of viscous fluid through circular pipe:

The velocity is maximum when r = 0 i.e. at the centre of pipe.

Average velocity:

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More Laminar Flow through Pipe Questions

Q1.At two points 1 and 2 in a pipeline, the velocities are V and 2V respectively. Both the points are at the same elevation. The fluid density is ρ. The flow can be assumed to be incompressible, inviscid, steady and irrotational. The difference in pressures P1 and P2 at points 1 and 2 is
Q2.If Reynolds number is less than 500 , the flow is said to be laminar for the:
Q3.For internal laminar flow, the variation of shear stress in the radial direction is:
Q4.In a Laminar flow in pipe, the velocity is maximum at:
Q5.The average velocity for laminar flow in a circular pipe of radius 'r' occurs at a distance of from its centre:
Q6.If the flow is critical in a channel then : (Symbols have normal meanings)
Q7.Water hammer is a phenomenon caused by :
Q8.Laminar flow through a circular tube was studied experimentally by :
Q9.Which of the following equations is correct for the Reynolds number?  (Where, D is diameter of the pipe, V is mean velocity of flow in the pipe, v is kinematic viscosity of the fluid)  
Q10.The flow in a circular pipe is laminar if the Reynolds number is: 

More Laminar Flow Questions

Q1.At two points 1 and 2 in a pipeline, the velocities are V and 2V respectively. Both the points are at the same elevation. The fluid density is ρ. The flow can be assumed to be incompressible, inviscid, steady and irrotational. The difference in pressures P1 and P2 at points 1 and 2 is
Q2.For the laminar flow through circular pipes, shear stress distribution across a section is _________ .
Q3.In a circular tube of diameter 100 mm and length 15 m with laminar flow, the Darcy friction factor is estimated to be 0.05. Calculate the Reynolds number.
Q4.If Reynolds number is less than 500 , the flow is said to be laminar for the:
Q5.The Darcy friction factor (f) for fully developed laminar flow in a circular pipe with the Reynolds number of 1600 is given as:
Q6.If a liquid enters a pipe of diameter ‘d’ with velocity ‘v’, then what will be its velocity at the exit if the diameter of the pipe reduces to 0.5d?
Q7.For a laminar flow through a circular pipe, the wall shear stress across a section is a function of _______
Q8.For internal laminar flow, the variation of shear stress in the radial direction is:
Q9.The flow through a capillary tube is an example of ____________ flow.
Q10.In a Laminar flow in pipe, the velocity is maximum at:
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Q1.Which of the following best defines vapour pressure in a liquid?
Q2.Priming of a pump refers to:
Q3.How does the volute shape in a single volute pump casing affect performance?
Q4.One challenge associated with double volute casings is:
Q5.Manometric head is defined as:
Q6.Compared to axial flow pumps, radial flow pumps typically:
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Q8.Fluid pressure is defined as:
Q9.A pitot tube is primarily used to measure:
Q10.A pump discharges water with a manometric head of 20 m. If the density of water is 1000 kg/m3 and gravity is 9.81 m/s2 , what is the approximate pressure increase provided by the pump?
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