Mechanical Operations Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the Stamp mill Blake jaw crusher Cage mill Bradford's breaker Stamp mill Blake jaw crusher Cage mill Bradford's breaker ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ centrifuge is the most suitable for separation of non-friable crystals. Disc-bowl Tubular bowl Perforated horizontal basket continuous Suspended batch basket Disc-bowl Tubular bowl Perforated horizontal basket continuous Suspended batch basket ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A 30% (by volume) suspension of spherical sand particles in a viscous oil has a hindered settling velocity of 4.44 μm/s. If the Richardson Zaki hindered settling index is 4.5, then the terminal velocity of a sand grain is 0.90 μm/s 0.02 μm/s 22.1 μm/s 1 μm/s 0.90 μm/s 0.02 μm/s 22.1 μm/s 1 μm/s ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Additives used for promoting the floccula-tion of particles is a/an Both A & B Surface active agent Neither A nor B Electrolyte Both A & B Surface active agent Neither A nor B Electrolyte ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the Density separation Size Volatile matter content Differential wettability Density separation Size Volatile matter content Differential wettability ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for __________ flow of filtrate. Incompressible cake and laminar Compressible cakes and laminar Incompressible cake and turbulent Compressible cake and turbulent Incompressible cake and laminar Compressible cakes and laminar Incompressible cake and turbulent Compressible cake and turbulent ANSWER DOWNLOAD EXAMIANS APP
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