Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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2 (cont'd)
(b) As shown in Figure 2.3, a liquid of density p flows upwards against gravity
through a contraction. The vertical height of the contraction is B. The liquid
pressure, flow velocity and cross sectional area at the contraction inlet
(Station 1) are P₁, V₁ and A₁, respectively, whereas the liquid pressure, flow
velocity and cross sectional area at the contraction outlet (Station 2) are P₂,
V2 and 42, respectively. Assume that the liquid is inviscid and the flow is
steady. A U-tube manometer is used to measure the difference in pressure
between Stations 1 and 2. The manometer contains a liquid of density 1.2p,
and the difference in liquid levels in both limbs of the manometer is H.
(i)
(ii)
Obtain an expression for the pressure difference (PP) between the
contraction inlet and outlet solely in terms of the quantities p, g, B, Vi, A₁
and A₂.
ME2134E/TME2134
Obtain an expression for the difference in liquid levels in both limbs of the
manometer H solely in terms of the quantities V₁, g, A₁ and A₂.
V₂
A2
Contraction
14
Flow
Pipe
V/₁
Manometer
1.2p
Figure 2.3
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Transcribed Image Text:Question 2 (cont'd) (b) As shown in Figure 2.3, a liquid of density p flows upwards against gravity through a contraction. The vertical height of the contraction is B. The liquid pressure, flow velocity and cross sectional area at the contraction inlet (Station 1) are P₁, V₁ and A₁, respectively, whereas the liquid pressure, flow velocity and cross sectional area at the contraction outlet (Station 2) are P₂, V2 and 42, respectively. Assume that the liquid is inviscid and the flow is steady. A U-tube manometer is used to measure the difference in pressure between Stations 1 and 2. The manometer contains a liquid of density 1.2p, and the difference in liquid levels in both limbs of the manometer is H. (i) (ii) Obtain an expression for the pressure difference (PP) between the contraction inlet and outlet solely in terms of the quantities p, g, B, Vi, A₁ and A₂. ME2134E/TME2134 Obtain an expression for the difference in liquid levels in both limbs of the manometer H solely in terms of the quantities V₁, g, A₁ and A₂. V₂ A2 Contraction 14 Flow Pipe V/₁ Manometer 1.2p Figure 2.3
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