Define uniform flow and non-uniform flow and give practical example for each

Define uniform flow and non-uniform flow and give practical example for each 
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1 Answer

Answer :

i. Uniform flow: The flow in which velocity at a given time does not change both in magnitude and direction from point to point in the flowing liquid is called uniform flow 

 Examples: a. Flow of liquid under pressure through long pipe lines of constant diameter b. Flow through a channel having uniform cross sectional area

ii. Non Uniform flow: The flow in which velocity at a given time changes from point to point in flowing fluid. is called non- uniform flow. 

Examples: a. Flow of liquid under pressure through long pipe lines of varying diameter b. Flow in river where cross sectional area changes.
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Related questions

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Last Answer : (C) Steadily decreasing flow through a reducing section

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Last Answer : (D) Non uniform direction of velocities at inlet & outlet sections

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Last Answer : (D) Expanding tube at constant rate

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Water flow in the river during flood can be categorised as the __________ flow. (A) Unsteady uniform (B) Unsteady non-uniform (C) Steady uniform (D) Steady non-uniform

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Description : The Euler's equation for the motion of liquids is based upon the assumption that (A) The fluid is non - viscous, homogeneous and incompressible (B) The velocity of flow is uniform over the section (C) The flow is continuous, steady and along the stream line (D) All of the above

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Description : Differentiate Between The Uniform Flow And Non-uniform Flow?

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Description : A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called (A) Steady flow (B) Uniform flow (C) Streamline flow (D) Turbulent flow

Last Answer : Answer: Option C

Uniform flow occurs when (A) The direction and magnitude of the velocity at all points are identical (B) The velocity of successive fluid particles, at any point, is the same at successive periods of time (C) The magnitude and direction of the velocity do not change from point to point in the fluid ) The fluid particles move in plane or parallel planes and the streamline patterns are identical in each pleasure

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The flow in a pipe or channel is said to be uniform when (A) The liquid particles at all sections have the same velocities (B) The liquid particles at different sections have different velocities (C) The quantity of liquid flowing per second is constant (D) Each liquid particle has a definite path

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Explain the suitable example to convert a practical current source into equivalent voltage source.

Description : Explain the suitable example to convert a practical current source into equivalent voltage source.

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In practical operation of any furnace, zero oxygen percentage or theoretical CO2 percentage in flue gas is rarely achieved, because of (A) Use of non-preheated combustion air (B) Use of pulverised solid fuels (C) Imperfect mixing of fuel & air and infiltration of air (D) Use of excessive positive draft in the furnace

Description : In practical operation of any furnace, zero oxygen percentage or theoretical CO2 percentage in flue gas is rarely achieved, because of (A) Use of non-preheated combustion air (B) Use of pulverised solid ... of fuel & air and infiltration of air (D) Use of excessive positive draft in the furnace

Last Answer : (C) Imperfect mixing of fuel & air and infiltration of air

For measuring uniform flow of water, weirs used are

Description : For measuring uniform flow of water, weirs used are

Last Answer : Ans.Rectangular and Trapezoidal weir

Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is (A) 0.72 (B) 4.364 (C) 18 (D) 83

Description : Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is (A) 0.72 (B) 4.364 (C) 18 (D) 83

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Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition. (A) ∂/∂t = 0 (B) ∂/∂t = constant (C) ∂/∂s = 0 (D) ∂/∂s = constant

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Last Answer : (C) ∂/∂s = 0

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Description : Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is ... A, C, D (B) B, D, E (C) A, B, E (D) A, D, E

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Nature of fluid flow during the opening of a valve in a pipeline is (A) Laminar (B) Unsteady (C) Steady (D) Uniform

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One dimensional fluid flow implies the (A) Flow in straight lines only (B) Uniform flow (C) Steady uniform flow (D) Flow in which transverse components are zero

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Last Answer : (D) Flow in which transverse components are zero

A streamline is (A) The line connecting the mid-points of flow cross-sections (B) Defined for uniform flow only (C) Drawn normal to the velocity vector at every point (D) Always the path of a particle

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Last Answer : (C) Drawn normal to the velocity vector at every point

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Last Answer : (B) Long pipe at decreasing rate

Steady uniform flow is represented by flow through a/an (A) Long pipe at constant rate (B) Long pipe at decreasing rate (C) Expanding tube at constant rate (D) None of these

Description : Steady uniform flow is represented by flow through a/an (A) Long pipe at constant rate (B) Long pipe at decreasing rate (C) Expanding tube at constant rate (D) None of these

Last Answer : (A) Long pipe at constant rate

One dimensional flow implies (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

Description : One dimensional flow implies (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

Last Answer : (D) A flow which does not account for changes in transverse direction

Normal depth in open channel flow is the depth of flow in the channel (A) Corresponding to uniform flow(B) Measured normal to the channel bed(C) Corresponding to steady flow(D) None of these

Description : Normal depth in open channel flow is the depth of flow in the channel (A) Corresponding to uniform flow (B) Measured normal to the channel bed (C) Corresponding to steady flow (D) None of these

Last Answer : (A) Corresponding to uniform flow

. In magnetic flow meters, voltage generation is (A) Due to the motion of conducting fluid through an externally generated uniform field (B) Proportional to the fluid velocity (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : . In magnetic flow meters, voltage generation is (A) Due to the motion of conducting fluid through an externally generated uniform field (B) Proportional to the fluid velocity (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Pick out the wrong statement. (A) A fluid mass is free from shearing forces, when it is made to rotate with a uniform velocity(B) Newton's law of viscosity is not applicable to the turbulent flow of fluidwith linear velocity distribution(C) Laminar flow of viscous liquids is involved in the lubrication of varioustypes of bearings(D) Rise of water in capillary tubes reduces with the increasing diameter ofcapillary tubes

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Last Answer : (B) Newton's law of viscosity is not applicable to the turbulent flow of fluid with linear velocity distribution

In an ideal tubular-flow reactor (A) There is no mixing in longitudinal direction (B) Mixing takes place in radial direction (C) There is a uniform velocity across the radius (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

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Description : Pick out the wrong statement. (A) In a batch reactor, which is exclusively used for liquid phase reactions; temperature pressure and composition may vary with time (B) In a semi-batch reactor, ... system (D) In a continuous flow reactor, both the reactants and the products flow out continuously

Last Answer : (C) In a continuous flow reactor, uniform concentration cannot be maintained throughout the vessel even in a well agitated system

For a tubular flow reactor with uniform concentration and temperature, the independent variable is (A) Time (B) Length (C) Diameter (D) None of these

Description : For a tubular flow reactor with uniform concentration and temperature, the independent variable is (A) Time (B) Length (C) Diameter (D) None of these

Last Answer : (B) Length

A stirred tank reactor compared to tubular-flow reactor provides (A) More uniform operating conditions (B) Permits operation at the optimum temperature for a long reaction time (C) Higher overall selectivity for a first order consecutive reaction (D) All (A), (B) and (C

Description : A stirred tank reactor compared to tubular-flow reactor provides (A) More uniform operating conditions (B) Permits operation at the optimum temperature for a long reaction time (C) Higher overall selectivity for a first order consecutive reaction (D) All (A), (B) and (C

Last Answer : (D) All (A), (B) and (C

An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section. (A) Adiabatic (B) Isothermal (C) Isentropic (D) Isochoric

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Last Answer : (B) Isothermal