Mechanical Operations In screen analysis, the notation +5 mm/-10 mm means particles passing through Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen Both 5 mm and 10 mm screens 10 mm screen and retained on 5 mm screen Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen Both 5 mm and 10 mm screens 10 mm screen and retained on 5 mm screen ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Driving force in case of filtration by a centrifuge is the Centrifugal pressure exerted by the liquid Speed of the centrifuge Formation of highly porous cake Narrow diameter of the vessel Centrifugal pressure exerted by the liquid Speed of the centrifuge Formation of highly porous cake Narrow diameter of the vessel ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a ball mill, Operating speed should be more than the critical speed Fine feed requires a larger ball Coarse feed requires a larger ball None of these Operating speed should be more than the critical speed Fine feed requires a larger ball Coarse feed requires a larger ball None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not an ultrafine grinder (colloid mill)? Toothed roll crusher Hammer mills with internal classification Agitated mills and fluid energy mills Micronizers Toothed roll crusher Hammer mills with internal classification Agitated mills and fluid energy mills Micronizers ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Width and speed of a conveyor belt depends upon the __________ of the material. Lump size Bulk density Both A & B Neither A nor B Lump size Bulk density Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ½w² . R² . ρL ½w² . δρL (2R + δ) ½w² . R . ρL(R + 2δ) ½w² . δ² . ρL ½w² . R² . ρL ½w² . δρL (2R + δ) ½w² . R . ρL(R + 2δ) ½w² . δ² . ρL ANSWER DOWNLOAD EXAMIANS APP
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