Mechanical Operations Bucket elevators are not suitable for the vertical lifting of __________ materials. Free flowing Small lumpy (e.g. grains and sand) Fine (e.g. - 200 mesh size coal) Sticky (e.g. clay paste) Free flowing Small lumpy (e.g. grains and sand) Fine (e.g. - 200 mesh size coal) Sticky (e.g. clay paste) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, volume shape factor is given by AD/V π(=A/D²) 2π(=2A/D²) π/6(=V/D³) AD/V π(=A/D²) 2π(=2A/D²) π/6(=V/D³) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to The change in volume due to crushing The new surface created None of these The size reduction ratio The change in volume due to crushing The new surface created None of these The size reduction ratio ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (d) as 1/d √d D² D 1/d √d D² D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Froth floatation is the most suitable for treating Sulphide ores Quartzite None of these Iron ores Sulphide ores Quartzite None of these Iron ores 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? 0.66 1 0.5 2.76 0.66 1 0.5 2.76 ANSWER DOWNLOAD EXAMIANS APP
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