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 22.1 μm/s 0.90 μm/s 0.02 μm/s 1 μm/s 22.1 μm/s 0.90 μm/s 0.02 μm/s 1 μm/s ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Choke crushing (in case of a Jaw crusher) compared to free crushing Both A and C Results in increased capacity Consumes more power Consumes less power Both A and C Results in increased capacity Consumes more power Consumes less power ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? 1 0.66 0.5 2.76 1 0.66 0.5 2.76 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle). 4/D.p 12/D.p 6/D.p 2/D.p 4/D.p 12/D.p 6/D.p 2/D.p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sulphuric acid mist is arrested by using a __________ scrubber. Hollow wet Packed wet Co-current Venturi Hollow wet Packed wet Co-current Venturi ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is the most suitable filter for separation of abrasive solids suspended in a corrosive liquid? Batch basket centrifuge Plate and frame filter press Vacuum filter Sand bed filter Batch basket centrifuge Plate and frame filter press Vacuum filter Sand bed filter ANSWER DOWNLOAD EXAMIANS APP
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