21. The buoyancy depends on
22. For pipes, laminar flow occurs when Roynolds number is
23. The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is
24. The maximum thickness of boundary layer in a pipe of radius r is
25. The speed of a pressure wave through a pipe depends upon
26. Practical fluids
27. General energy equation holds for
28. The angle of contact in case of a liquid depends upon
29. When the velocity distribution is uniform over the cross-section, the correction factor for momentum is
30. Size of a venturimeter is specified by
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