Mechanical Operations For a non-spherical particle, the sphericity Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle Is always less than 1 Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle Has the dimension of length Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle Is always less than 1 Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle Has the dimension of length ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following mineral dressing operations is termed as 'comminution'? Tabling None of these Spiralling Panning Tabling None of these Spiralling Panning ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm. 0.007 0.3 50 0.014 0.007 0.3 50 0.014 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Mesh indicates the number of holes per Square foot Square inch Linear foot Linear inch Square foot Square inch Linear foot Linear inch ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The filtrate flow rate in constant pressure filtration Continuously increases Remains constant throughout May increase or decrease ; depends on the pressure Continuously decreases Continuously increases Remains constant throughout May increase or decrease ; depends on the pressure Continuously decreases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals. Concentration ratio Separation efficiency None of these Selectivity index Concentration ratio Separation efficiency None of these Selectivity index ANSWER DOWNLOAD EXAMIANS APP
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