Mechanical Operations Tabular bowl centrifuges as compared to disk bowl centrifuges Operate at higher speed Can not be operated under pressure/vacuum Can't be used for separation of fine suspended solids from a liquid Employ bowl of larger diameter Operate at higher speed Can not be operated under pressure/vacuum Can't be used for separation of fine suspended solids from a liquid Employ bowl of larger diameter ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For separation of sugar solution from settled out mud, we use a __________ filter. Plate and frame Centrifugal Rotary drum vaccum Sparkler Plate and frame Centrifugal Rotary drum vaccum Sparkler ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The main differentiation factor between tube mill and ball mill is the Operating speed Size of the grinding media Length to diameter ratio Final product size Operating speed Size of the grinding media Length to diameter ratio Final product size 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. Incompressible cake and turbulent 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 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is 9.0 kWh/ton 25.4 kWh/ton 18 kWh/ton 6.35 kWh/ton 9.0 kWh/ton 25.4 kWh/ton 18 kWh/ton 6.35 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations At low Reynold's number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5 : Power number Re = ρ N D2/μ: Reynold's number N is the impeller rotational speed, and D is the impeller diameter. Po ∝ Re1.0 Po ∝ Re0.5 Po ∝ Re0.0 Po ∝ Re-1.0 Po ∝ Re1.0 Po ∝ Re0.5 Po ∝ Re0.0 Po ∝ Re-1.0 ANSWER DOWNLOAD EXAMIANS APP
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