Engineering Board Exam Reviewer · Fluid Mechanics · hard
An inverted U-tube manometer containing oil (SG = 0.8) is connected between two points in a horizontal water pipe. The manometer deflection is 300 mm. What is the pressure difference between the two points?
- 2.3544 kPa
- 0.5886 kPa
- 5.2974 kPa
- 2.9430 kPa
Answer
B. 0.5886 kPa
Solution
For an inverted U-tube with a lighter fluid on top: P = (SGw - SGoil)γw h = (1 - 0.8)(9.81)(0.3) = 0.5886 kPa.
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