Page 24 - ebook fluid mechanics_finalize

FLUID MECHANICS

4. Define the term of Fluid.

5. Define the following terms:

a. Fluid

b. Fluid statics

c. Fluid dynamic

6. Explain the difference between the fluid, gas and solid condition.

7. List FOUR types of pressure.

8. Define gauge pressure, atmospheric pressure and absolute pressure.

Ans. SEE LECTURE Page 3/4)

9. What is the pressure gauge of air in the cylinder if the atmospheric gauge is 101.3

2
2
2
kN/m and absolute pressure is 512 kN/m . Ans. 410.7 kN/m

2
10. Calculate the pressure gauge (N/m ) of air in the cylinder if the atmospheric
2
2
pressure is 101.3 kN/m and absolute pressure is 460 kN/m . Ans.
2
358700N/m

11. A Bourdon pressure gauge attached to a boiler located at sea level shows a reading
pressure of 7 bar. If atmospheric pressure is 1.013 bar, what is the absolute pressure in

2
2
that boiler (in kN/m ) ? Ans. 801.3kN/m

12. Gas column height taken from a pressure gauge is equivalent to 68mm of water

and the mercury height due to atmospheric pressure is 750mm of mercury. Calculate
2
the absolute pressure of the gas in kN/m . Ans.
2
100.73kN/m

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