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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