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Fluid Mechanics MCQ 15

1. The Bernoulli's equation is based on the assumption that
2. Coefficient of resistance is the ratio of
3. The coefficient of discharge for an external mouthpiece is
4. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
5. In order to measure the flow with a venturimeter, it is installed in
6. In a venturimeter, the velocity of liquid at throat is __________ than at inlet.
7. The centre of buoyancy is the centre of area of the immersed body.
8. The stability of a dam is checked for
9. The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
10. The pressure less than atmospheric pressure is known as
11. The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
12. The maximum efficiency of transmission through a pipe is
13. An ideal fluid is frictionless and incompressible.
14. In open channels, the specific energy is the
15. A siphon is used to connect two reservoirs at different levels intervened by a high ridge.
16. The pressure measured with the help of a piezometer tube is in
17. A flow in which the volume of a fluid and its density does not change during the flow is called __________ flow.
18. The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)
19. The loss of head due to an obstruction in a pipe is twice the loss of head at its entrance.
20. In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.
Fluid Mechanics MCQ 15
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