Figure 3.1 shows a water tank with a pressure meter and a valve. When the valve is closed, the reading from the pressure meter is 21 kN/m². The valve is then opened, and the water flows out until the reading from pressure meter shows the value of 5.5 kN/m². Assume that the water head loss is negligible, then (a) calculate the water height level, h, measured from the valve outlet; (b) if the outlet diameter is 50 mm, calculate the flow rate when the valve is open and the reading from the pressure meter is 5.5 kN/m²; (c) if we seal the top of water tank with a lid (air tight), describe what happens when we open the water valve? State your assumptions.
Figure 3.1 shows a water tank with a pressure meter and a valve. When the valve is closed, the reading from the pressure meter is 21 kN/m². The valve is then opened, and the water flows out until the reading from pressure meter shows the value of 5.5 kN/m². Assume that the water head loss is negligible, then (a) calculate the water height level, h, measured from the valve outlet; (b) if the outlet diameter is 50 mm, calculate the flow rate when the valve is open and the reading from the pressure meter is 5.5 kN/m²; (c) if we seal the top of water tank with a lid (air tight), describe what happens when we open the water valve? State your assumptions.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Please show working out for all three questions (although third question 'c' doesn't require any working out, just explanation)

Transcribed Image Text:Figure 3.1 shows a water tank with a pressure meter and a valve. When the valve is
closed, the reading from the pressure meter is 21 kN/m². The valve is then opened,
and the water flows out until the reading from pressure meter shows the value of
5.5 kN/m². Assume that the water head loss is negligible, then
(a) calculate the water height level, h, measured from the valve outlet;
(b) if the outlet diameter is 50 mm, calculate the flow rate when the valve is
open and the reading from the pressure meter is 5.5 kN/m²;
(c) if we seal the top of water tank with a lid (air tight), describe what happens
when we open the water valve? State your assumptions.
h
V
Pressure
meter
Valve
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