Mechanical Operations Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ρ= density of particles) M . ρ/Vp M . Vp/ρ Vp/m . ρ M/ρ . Vp M . ρ/Vp M . Vp/ρ Vp/m . ρ M/ρ . Vp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Run of mine (ROM) coal is crushed by a __________ for use in domestic ovens. Hammer crusher Jaw crusher Tube mill Ball mill Hammer crusher Jaw crusher Tube mill Ball mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the Venturi atomiser Gravity settling chamber Cyclone separator Electro-static precipitator Venturi atomiser Gravity settling chamber Cyclone separator Electro-static precipitator 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 18 kWh/ton 25.4 kWh/ton 6.35 kWh/ton 9.0 kWh/ton 18 kWh/ton 25.4 kWh/ton 6.35 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to __________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance ). √μ 1/√μ 1/μ² 1/μ √μ 1/√μ 1/μ² 1/μ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Driving force in case of filtration by a centrifuge is the Narrow diameter of the vessel Speed of the centrifuge Formation of highly porous cake Centrifugal pressure exerted by the liquid Narrow diameter of the vessel Speed of the centrifuge Formation of highly porous cake Centrifugal pressure exerted by the liquid ANSWER DOWNLOAD EXAMIANS APP
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