Mechanical Operations The critical speed of a trommel (N) is related to its dia (D) as N ∝ √D N ∝ 1/D N ∝ D N ∝ 1/√D N ∝ √D N ∝ 1/D N ∝ D N ∝ 1/√D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In screen analysis, the notation +5 mm/-10 mm means particles passing through Both 5 mm and 10 mm screens Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen 10 mm screen and retained on 5 mm screen Both 5 mm and 10 mm screens Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen 10 mm screen and retained on 5 mm screen ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Equivalent diameter of a particle is the diameter of the sphere having the same Ratio of surface to volume as the actual volume Ratio of volume to surface as the particle None of these Volume as the particle Ratio of surface to volume as the actual volume Ratio of volume to surface as the particle None of these Volume as the particle ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) AD/V π(=A/D²) None of these π/6(=V/D³) AD/V π(=A/D²) None of these π/6(=V/D³) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sphericity of raschig ring (whose length and diameter are equal) is 2 >1 1 2 >1 1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In the cyclone separator used for separation of dust from dust laden gas, the gas Develops a helical motion inside the chamber Both B and C Is admitted tangentially at high velocity Enters the cyclone from the top Develops a helical motion inside the chamber Both B and C Is admitted tangentially at high velocity Enters the cyclone from the top ANSWER DOWNLOAD EXAMIANS APP
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