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Civil Engineering Practice Test: Fluid Mechanics
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Fluid mechanics is the branch of physics concerned with the mechanics of fluids and the forces on them. It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical and biomedical engineering, geophysics, oceanography, meteorology, astrophysics, and biology. (Source: Wikipedia)

Example of fluid mehanics in action:  Waste flowing through the sewer system, gases moving through an engine, or sap moving sucrose from the leaves to the distal parts of a tree, or even cars moving through the traffic grid.

Civil Engineering Practice Test: Fluid Mechanics
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25 Questions

1. Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the
2. Barometer is used to measure
3. The resultant upward pressure of the fluid on an immersed body is called
4. The viscosity of water at 20°C is
5. Capillary action is due to the
6. The region between the separation streamline and the boundary surface of the solid body is known as
7. When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.
8. The volumetric change of the fluid caused by a resistance is known as
9. Viscosity of water in comparison to mercury is
10. The mass per unit volume of a liquid at a standard temperature and pressure is called
11. The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be
12. The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)
13. In an isothermal atmosphere, the pressure
14. Mach number is significant in
15. The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as
16. The difference of pressure between the inside and outside of a liquid drop is
17. If ‘w’ is the specific weight of liquid and ‘k’ the depth of any point from the surface, then pressure intensity at that point will be
18. The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is
19. An orifice is said to be large, if
20. Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called
21. A fluid is said to be ideal, if it is
22. A one dimensional flow is one which
23. The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called
24. Which of the following statement is wrong?
25. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

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