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Fluid Mechanics 1: Properties of Fluids
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Fluid Mechanics 1: Properties of Fluids
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25 Questions

1. Equal amount of a particular liquid is poured into three similar containers, namely 1, 2 and 3, at a temperature of T1, T2 and T3 respectively. If T1 < T2 < T3, the liquid in which container will have the highest vapor pressure?
2. Which one of the following is the correct relation between compressibility β and Bulk Modulus k
3. Which type of trees and plants are more effective in reducing infiltration?
4. An oil of vicosity 7 poise is used for lubrication between shaft and sleeve. The diameter of shaft is 0.6 m and it rotates is 360 rpm. Calculate the power lost in oil for a sleeve length of 160mm. The thickness of oil film is 1.0mm
5. When might the retaining walls prove to be not costly?
6. Bulk Modulus, Pressure, Force, Stress - Which one of these won’t have the same unit as the others?
7. Retraining structures may prove exceptionally successful when?
8. Cavitation is more pronounced in rough pipes than smooth surfaced pipes.
9. The rise in the level of a liquid in a tube is h. If half the amount is poured outside, what will be the new rise in liquid level?
10. Which of the following equation correctly depicts the relation between the vapor pressure of a liquid and it’s temperature?
11. Which of the following is not a method of control of mass movement?
12. Pneumatically applied mortar or concrete is called __________
13. The three liquids 1, 2, and 3 with vapor pressures V1, V2 and V3 respectively, are kept under same pressure. If V1 > V2 > V3, which liquid will start boiling early?
14. The value of the Bulk Modulus of elasticity for an incompressible fluid is
15. Which of the following contribute to the reason behind the origin of surface tension?
16. More often a combination of methods may have to be used for stabilising the slopes.
17. Which of the following is not a method of slope treatment?
18. Find the capillarity rise or fall if a capillary tube of diameter .03m is immersed in hypothetical fluid with specific gravity 6.5, surface tension 0.25 N/m and angle of contact 147°.
19. A water drop of diameter 1 cm breaks into 1000 similar droplets of same diameter. What will be the gain or loss in the surface energy? (Take surface tension as 0.075 N/m)
20. Will capillary rise occur and if it occurs what will be capillary rise if glass capillarity tube is immersed in water and experiment is carried out by astronauts in space.
21. If a fluid of certain surface tension and diameter is used to create a soap bubble and a liquid jet. Which of the two, bubble or liquid jet, will have greater pressure difference on the inside and outside.
22. Removal of water is done only by subsurface drainage.
23. Which of the following statement is true about vapor pressure of a liquid?
24. For liquid fluids will capillarity rise (or fall) increase or decrease with rise in temperature.
25. Determine the minimum size of glass tube that can be used to measure water level if the capillary rise in the tube is restricted to 5mm. Consider surface tension of water in contact with air as 0.073 N/m