Mechanical Operations Which of the following oxides is not present in hematite iron ore? Calcium oxide Titanium oxide Cobalt oxide Manganese oxide Calcium oxide Titanium oxide Cobalt oxide Manganese oxide ANSWER DOWNLOAD EXAMIANS APP
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 0.02 μm/s 1 μm/s 0.90 μm/s 22.1 μm/s 0.02 μm/s 1 μm/s 0.90 μm/s 22.1 μm/s ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations With increase in drum speed, in a rotary drum filter, the filtration rate Increases Is not affected Increases linearly Decreases Increases Is not affected Increases linearly Decreases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The material is crushed in a gyratory crusher by the action of Compression Cutting Impact Attrition Compression Cutting Impact Attrition ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for __________ flow of filtrate. Compressible cakes and laminar Compressible cake and turbulent Incompressible cake and laminar Incompressible cake and turbulent Compressible cakes and laminar Compressible cake and turbulent Incompressible cake and laminar Incompressible cake and turbulent ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ½w² . R² . ρL ½w² . δ² . ρL ½w² . δρL (2R + δ) ½w² . R . ρL(R + 2δ) ½w² . R² . ρL ½w² . δ² . ρL ½w² . δρL (2R + δ) ½w² . R . ρL(R + 2δ) ANSWER DOWNLOAD EXAMIANS APP
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