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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. Metacentric height is the distance between the metacentre and
2. The center of gravity of the volume of the liquid displaced by an immersed body is called
3. Select the correct statement
4. Venturimeter is used to
5. If the surface of liquid is convex, men
6. The center of gravity of the volume of the liquid displaced by an immersed body is called
7. If the depth of water in an open channel is less than the critical depth, the flow is called
8. The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
9. Choose the wrong statement
10. A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury?
11. 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
12. The shear stress between the two liquid layers is __________ proportional to the distance between two layers.
13. An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of
14. Euler’s dimensionless number relates the following
15. The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)
16. The property of fluid by virtue of which it offers resistance to shear is called
17. Flow of water in a pipe about 3 meters in diameter can be measured by
18. The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)
19. An average value of coefficient of velocity is
20. In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than
21. The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.
22. The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)
23. Choose the wrong statement
24. Mercury is often used in barometer because
25. The diameter of the nozzleD. for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe, and l = Length of pipe)

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