21. Quicksand is an example of a __________ fluid.
22. Drag is the force component exerted on an immersed object,
23. In case of a pipe exit fitted with a nozzle, the
24. Reynolds number is the ratio of
25. The valve used for very remote and accurate control of fluid is a __________ valve.
26. The terminal velocity of a particle moving through a fluid varies as dpn. What is the value of 'n' for Newton's law regime?
27. Absolute viscosity of a fluid is a function of the __________ of the fluid.
28. A free jet of water of cross-sectional area 0.01 m2 and a velocity of 20 m/s strikes a plate and then flows in a plane parallel to the plate as shown in the figure below. The horizontal component of the force on the support is
29. Which of the following relationship is valid for the equilibrium position of the float in a rotameter? (where, Df = Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)
30. With increasing flow rate, the hydraulic efficiency of a centrifugal pump
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