4. In a vertical pipe carrying water, pressure gauges are inserted at points A and B where the pipe diameters are 0.2 and 0.08 m respectively. The point B is 3 m below A, and when the flow rate down the pipe is 0.02 m/s, the pressure at B is 15 kPa greater than at A. Assume that the losses in the pipe between A and B can be expressed as: da -02m de - 0.08 m k- 2g where v is the velocity at A. a) Find the value of k. b) If the gauges at A and B are replaced with tubes filled with water and connected to a u- tube containing mercury of relative density 13.6, what is Rp?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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4. In a vertical pipe carrying water, pressure
gauges are inserted at points A and B where
the pipe diameters are 0.2 and 0.08 m
respectively. The point B is 3 m below A,
and when the flow rate down the pipe is 0.02
m/s, the pressure at B is 15 kPa greater than
at A. Assume that the losses in the pipe
between A and B can be expressed as:
dA -0.2m
de - 0.08 m
Rp
k-
2g
where v is the velocity at A.
a) Find the value of k.
b) If the gauges at A and B are replaced with tubes filled with water and connected to a u-
tube containing mercury of relative density 13.6, what is Rp?
Transcribed Image Text:4. In a vertical pipe carrying water, pressure gauges are inserted at points A and B where the pipe diameters are 0.2 and 0.08 m respectively. The point B is 3 m below A, and when the flow rate down the pipe is 0.02 m/s, the pressure at B is 15 kPa greater than at A. Assume that the losses in the pipe between A and B can be expressed as: dA -0.2m de - 0.08 m Rp k- 2g where v is the velocity at A. a) Find the value of k. b) If the gauges at A and B are replaced with tubes filled with water and connected to a u- tube containing mercury of relative density 13.6, what is Rp?
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