1. When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure
2. An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.
3. The pressure of air __________ with the increase of height from the surface of the earth.
4. The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
5. The discharge over a rectangular notch is
6. The sheet of water flowing over a notch or a weir is known as
7. The specific weight of compressible fluids does not remain constant.
8. According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)
9. The volume of a fluid __________ as the pressure increases.
10. When the venturimeter is inclined, then for a given flow it will show __________ reading.
11. The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called
12. The pressure of the liquid flowing through the divergent portion of a venturimeter
13. In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as that of the atmosphere.
14. The vacuum pressure can be measured with the help of a piezometer tube.
15. A body floating in a liquid is said to be not in equilibrium if its metacentre lies below its centre of gravity.
16. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?
17. Newton's law of viscosity is a relationship between
18. A flow in which the quantity of liquid flowing per second is not constant, is called
19. Water is a __________
20. In a sharp-crested weir, the thickness of the weir is kept less than half of the height of water above the crest of the weir.
Fluid Mechanics MCQ 6
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