A gasoline line is connected to a pressure gauge through a double U-tube manometer as shown in the figure. If the reading of the pressure gauge is 400 kPa and the effect of air column on pressure is negligible, determine the gauge pressure of the gasoline line.

A gasoline line is connected to a pressure gauge through a double U-tube manometer as shown in the figure. If the reading of the pressure gauge is 400 kPa and the effect of air column on pressure is negligible, determine the gauge pressure of the gasoline line.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter15: Fluid Mechanics

Section: Chapter Questions

Problem 5P

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Concept explainers

Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.

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A gasoline line is connected to a pressure gauge through a double U-tube manometer as
shown in the figure. If the reading of the pressure gauge is 400 kPa and the effect of air
column on pressure is negligible, determine the gauge pressure of the gasoline line.
Oil SG= 0.79
P
gage = 400 kPa
A
Gasoline SG= 0.70
Pipe
Air
45 cm 50 cm
22 cm
B
10 cm
Water
Mercury
Select one:
O a. 384.6 kPa
O b. 0.3846 kPa
O c. 3.846 kPa
SG= 13.6

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