41. The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is
42. Equivalent diameter of a particle is the diameter of the sphere having the same
43. Sedimentation on commercial scale occurs in
44. The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be
45. Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively.
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