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ES15 1st LE

The document contains instructions and questions for a fluid mechanics exam, asking students to solve 3 problems: determining the amount of air remaining in a fuel tank based on a fuel gauge reading; computing the air pressure required to keep a circular gate of diameter 0.8m and weight of 2 kN closed; and calculating the force required to open a revolving quarter-cylindrical gate pivoted at one end. Students are reminded to show their work and assumptions and not to engage in cheating on the closed-book exam.

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Beoyotch 1234
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111 views1 page

ES15 1st LE

The document contains instructions and questions for a fluid mechanics exam, asking students to solve 3 problems: determining the amount of air remaining in a fuel tank based on a fuel gauge reading; computing the air pressure required to keep a circular gate of diameter 0.8m and weight of 2 kN closed; and calculating the force required to open a revolving quarter-cylindrical gate pivoted at one end. Students are reminded to show their work and assumptions and not to engage in cheating on the closed-book exam.

Uploaded by

Beoyotch 1234
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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ES 15 – Fluid Mechanics 1stSemester S.Y.

2012-2013
First Long Exam July 19, 2013
ACADEMIC INTEGRITY PLEDGE: On my honor, I will not give nor receive inappropriate aid in this examination.
INSTRUCTIONS:
1. Turn all mobile phones OFF during the entire examination period. Any form of cheating will be strictly penalized.
2. Start the solution to each problem on a new sheet; do not write at the back; and put a box on your final answer/s.
3. Show clearly all pertinent solutions and state the assumptions made, if any.

Part I. The reading of an automobile fuel gage is


proportional to the gage pressure at the bottom of the
tank. If the tank is 32cm deep and is contaminated
with 3cm of water, how many centimeters of air
remains at the top when the gage indicates “full”?
γgasoline = 6670N/m3.

Part II. Compute the air pressure required


to keep the gate closed. The gate is a circular
plate of diameter 0.8m and weight of 2.0 kN.

Part III. A revolving gate is a quarter-


cylinder with pivot through O. What
force F is required to open it? (Treat
the gate as weightless)

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