1. The velocity of flow is same at all points in the cross-section of a channel.
2. The shear stress between the two liquid layers is __________ proportional to the distance between two layers.
3. A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called
4. The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)
5. The length of a liquid stream while flowing over a weir __________ at the ends of the sill.
6. The mass per unit volume of a liquid at a standard temperature and pressure is called
7. A body floating in a liquid is said to be in neutral equilibrium, if its metacentre
8. Froude's number is the ratio of inertia force to
9. The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.
10. The centre of pressure acts __________ the centre of gravity of immersed surface.
11. One cubic metre of water weighs
12. According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)
13. In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be
14. A flow through an expanding tube at constant rate is called
15. When a liquid is flowing through a pipe, the velocity of the liquid is
16. When a body is placed over a liquid, it is subjected to gravitational force and upthrust of the liquid.
17. Bulk modulus of a fluid is the ratio of
18. The highest efficiency is obtained with a channel of __________ section.
19. When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.
20. The pressure at a point 4 m below the free surface of water is
Fluid Mechanics MCQ 1
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