Mechanical Operations In a mixer, the quantity, (v. L/D) is termed as __________ number(where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing). Weber Peclet Brinkman Schmidt Weber Peclet Brinkman Schmidt ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filter aid is used to Increase the rate of filtration Increase the porosity of the cake Act as a support base for the septum Decrease the pressure drop Increase the rate of filtration Increase the porosity of the cake Act as a support base for the septum Decrease the pressure drop ANSWER DOWNLOAD EXAMIANS APP
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 . Vp/ρ M/ρ . Vp Vp/m . ρ M . ρ/Vp M . Vp/ρ M/ρ . Vp Vp/m . ρ M . ρ/Vp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The sphericity of a solid particle of cubical shape is (π/6)1/3 π π/3 (π/6)1/2 (π/6)1/3 π π/3 (π/6)1/2 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Addition of filter aid to the slurry before filtration is done to ...... of the cake. Decrease the compressibility co-efficient Increase the porosity Increase the compressibility co-efficient Decrease the porosity Decrease the compressibility co-efficient Increase the porosity Increase the compressibility co-efficient Decrease the porosity ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the Density separation Volatile matter content Size Differential wettability Density separation Volatile matter content Size Differential wettability ANSWER DOWNLOAD EXAMIANS APP
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