61. General mechanism of size reduction in intermediate and fine grinder is by
62. The opening of a 200 mesh screen (Taylor series) is
63. Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for
64. __________ mills are termed as impactors.
65. The sphericity of a cylinder of 1 mm diameter and length 3 mm is
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