Mechanical Operations Use of baffles in agitators help in minimising the __________ tendency. Swirling Both A & B Vortexing Neither A nor B Swirling Both A & B Vortexing Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sulphuric acid mist is arrested by using a __________ scrubber. Co-current Hollow wet Venturi Packed wet Co-current Hollow wet Venturi Packed wet ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Bucket elevators are not suitable for the vertical lifting of __________ materials. Sticky (e.g. clay paste) Fine (e.g. - 200 mesh size coal) Small lumpy (e.g. grains and sand) Free flowing Sticky (e.g. clay paste) Fine (e.g. - 200 mesh size coal) Small lumpy (e.g. grains and sand) Free flowing ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced. None of these Tailing Concentrate Middling None of these Tailing Concentrate Middling ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The main differentiation factor between tube mill and ball mill is the Length to diameter ratio Final product size Operating speed Size of the grinding media Length to diameter ratio Final product size Operating speed Size of the grinding media ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) None of these π(=A/D²) AD/V π/6(=V/D³) None of these π(=A/D²) AD/V π/6(=V/D³) ANSWER DOWNLOAD EXAMIANS APP
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