26. The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10-6m2/s).
27. For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter)
28. The maximum delivery pressure of compressors can be upto __________ atmospheres.
29. Dimension of surface tension is(where, F = force, L = length)
30. Which of the following is not a dimension-less parameter ?
31. Co-efficient of velocity is __________ the coefficient of discharge.
32. All pipes of a particular nominal size have the same
33. For the transfer of solution of thick slurry, the pump used is a __________ pump.
34. Which of the following is not concerned with the fluid-particle interaction ?
35. Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be __________ ft.
36. Pressure drag does not depend upon the
37. Dimension of absolute viscosity is
38. __________ pumps are axial flow pumps.
39. Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.
40. For a particle settling in water at its terminal settling velocity, which of the following is true ?
41. A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is
42. Shear stress in a fluid flowing in a round pipe
43. The resistance wire used in a hot wire anemometer for conducting electrical current is made of
44. Two dimensional stream function
45. What causes cavitation in centrifugal pump ?
46. Draining of shallow pits or sump is done by a sump pump, which is a __________ pump.
47. A hydraulic ram acts as a/an __________ pump.
48. The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonion fluid in a circular pipe is
49. Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively).
50. The line of action of the buoyant force passes through the centre of gravity of the