Mechanical Operations Which of the following oxides is not present in hematite iron ore? Manganese oxide Calcium oxide Titanium oxide Cobalt oxide Manganese oxide Calcium oxide Titanium oxide Cobalt oxide ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not an ultrafine grinder (colloid mill)? Micronizers Hammer mills with internal classification Agitated mills and fluid energy mills Toothed roll crusher Micronizers Hammer mills with internal classification Agitated mills and fluid energy mills Toothed roll crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pine oil used in froth floatation technique acts as a/an Collector Modifier Frother Activator Collector Modifier Frother Activator ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a hammer crusher, Reduction ratio can be varied by adjusting the distance from cage to hammers Crushing takes place by impact breaking All of these Maximum acceptable feed size is 30 cms Reduction ratio can be varied by adjusting the distance from cage to hammers Crushing takes place by impact breaking All of these Maximum acceptable feed size is 30 cms ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity? Sphere Cube Raschig rings Cylinder (L/D = 1) Sphere Cube Raschig rings Cylinder (L/D = 1) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For efficient grinding, ball mills must be operated At a speed less than the critical speed At a speed equal to the critical speed With minimum possible small balls At a speed more than the critical speed At a speed less than the critical speed At a speed equal to the critical speed With minimum possible small balls At a speed more than the critical speed ANSWER DOWNLOAD EXAMIANS APP
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