1. The flow in a pipe is neither laminar nor turbulent when Reynold number is
2. The flow in a pipe is turbulent when Reynold number is
3. For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called
4. The intensity of pressure on an immersed surface __________ with the increase in depth.
5. When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
6. The buoyancy depends upon the
7. The velocity corresponding to Reynold number of 2800, is called
8. In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.
9. When the pipes are in series, the total head loss is equal to the sum of the head loss in each pipe.
10. When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
11. The specific gravity has no units.
12. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, at right angles to the direction of flow of the liquid is known as lift.
13. A flow in which __________ force is dominating over the viscosity is called turbulent flow.
14. Reynold's number is the ratio of inertia force to
15. If an incompressible liquid is continuously flowing through a pipe, the quantity of liquid passing per second is different at different sections.
16. The unit of dynamic viscosity in S.I. units is
17. The atmospheric pressure at sea level is
18. When the pressure intensity at a point is less than the local atmospheric pressure, then the difference of these two pressures is called vacuum pressure.
19. The depth of water in a channel corresponding to the minimum specific energy is known as critical depth.
20. Bulk modulus of a fluid __________ as the pressure increases.
Fluid Mechanics MCQ 12
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