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5 18. In a horizontal flow of incompressible fluid along a constant pipe section under steady conditions, the pressure along flow direction will: TH Remain constant Increase Decrease Increase or decrease depending on the fluid

5 18. In a horizontal flow of incompressible fluid along a constant pipe section under steady conditions, the pressure along flow direction will: TH Remain constant Increase Decrease Increase or decrease depending on the fluid

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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9 11 4 5 6 7 3 Question 1: Choose the correct letter, A, B, C or D. (22 Points) 2 Points each A 1 2 In a fluid flow, point A is at a higher elevation than point B. The head loss between these points is H. The total heads at A and B are HA and Ha respectively. The flow will take place: The flow is said to be steady when the: For the acceleration equation, when the term VdV/ds=2 m/s² that means the flow is: In a horizontal flow of incompressible fluid along a constant pipe section under steady conditions, the pressure along flow direction will: The total head in a flow is the sum of In a flow along a varying flow cross section, as the area decreases: For pitot-static tube shown below, the flow velocity is equal to: Water 8 In a 2 m long pipe the cross-sectional area A=0.4 m². At a given instant a discharge of 0.48 m/s was flowing in the duct and it was found to increase at a rate of 0.12 m³/s. The local acceleration in m/s² is: L = 0.5 m From A to B if HA + H₂= На Velocity at any point of observation does not change with time Steady Remain constant Piezometric head, velocity head and datum head The slope of EGL will increase 0.6 m/s 2.1 1 Always from A to B Velocity does not change in magnitude at any point in a flowing fluid 10 The head extracted by a turbine having a flow of 1.2 m/s is equal to 120 m. If the efficiency of the turbine = 90% the output power developed from the turbine in kW is: B Uniform Piezometric head and velocity head Increase In a steady flow at a location in the flow, the velocity head is 6 m, the pressure head is 4 m, and the potential head is 4 m. The height of EGL at this location will be: Water flows at a rate of 0.001 m/s through a pipe with diameter of 20 cm, estimate Reynolds number if the kinematic viscosity = 106 m²/s. The slope of EGL will decrease 2.15 m/s 3.6 14 1569.6 3855 C From B to A if HA+HL= На Velocity does not change either in magnitude or in direction at any point in a flowing fluid Unsteady Decrease Piezometric head and pressure head The slope of EGL will remain constant 1.11 m/s 12 0.3 1271.3 4233 D None of these None of these Non- uniform Increase or decrease depending on the fluid 10 Piezometric head and datum head Insufficient information 3.13 m/s 5244 1.5 8 1418.5 1723.4 6366
Transcribed Image Text:9 11 4 5 6 7 3 Question 1: Choose the correct letter, A, B, C or D. (22 Points) 2 Points each A 1 2 In a fluid flow, point A is at a higher elevation than point B. The head loss between these points is H. The total heads at A and B are HA and Ha respectively. The flow will take place: The flow is said to be steady when the: For the acceleration equation, when the term VdV/ds=2 m/s² that means the flow is: In a horizontal flow of incompressible fluid along a constant pipe section under steady conditions, the pressure along flow direction will: The total head in a flow is the sum of In a flow along a varying flow cross section, as the area decreases: For pitot-static tube shown below, the flow velocity is equal to: Water 8 In a 2 m long pipe the cross-sectional area A=0.4 m². At a given instant a discharge of 0.48 m/s was flowing in the duct and it was found to increase at a rate of 0.12 m³/s. The local acceleration in m/s² is: L = 0.5 m From A to B if HA + H₂= На Velocity at any point of observation does not change with time Steady Remain constant Piezometric head, velocity head and datum head The slope of EGL will increase 0.6 m/s 2.1 1 Always from A to B Velocity does not change in magnitude at any point in a flowing fluid 10 The head extracted by a turbine having a flow of 1.2 m/s is equal to 120 m. If the efficiency of the turbine = 90% the output power developed from the turbine in kW is: B Uniform Piezometric head and velocity head Increase In a steady flow at a location in the flow, the velocity head is 6 m, the pressure head is 4 m, and the potential head is 4 m. The height of EGL at this location will be: Water flows at a rate of 0.001 m/s through a pipe with diameter of 20 cm, estimate Reynolds number if the kinematic viscosity = 106 m²/s. The slope of EGL will decrease 2.15 m/s 3.6 14 1569.6 3855 C From B to A if HA+HL= На Velocity does not change either in magnitude or in direction at any point in a flowing fluid Unsteady Decrease Piezometric head and pressure head The slope of EGL will remain constant 1.11 m/s 12 0.3 1271.3 4233 D None of these None of these Non- uniform Increase or decrease depending on the fluid 10 Piezometric head and datum head Insufficient information 3.13 m/s 5244 1.5 8 1418.5 1723.4 6366
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