Mechanical Operations A pebble mill Is a tube mill lined with ceramic or other non-metallic liner Employs flints or ceramic pebbles as the grinding medium Both B and C Is a ball mill Is a tube mill lined with ceramic or other non-metallic liner Employs flints or ceramic pebbles as the grinding medium Both B and C Is a ball mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines? Pebble mill Compartment mill Tube mill Rod mill Pebble mill Compartment mill Tube mill Rod mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a turbine agitated and baffled tank, operating at low Reynold's number (based on impeller diameter), the power number (Np) varies with NRe as Np → constant Np ∝ NRe Np ∝ √NRe Np ∝ 1/NRe Np → constant Np ∝ NRe Np ∝ √NRe Np ∝ 1/NRe ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the Washing time only Square root of the velocity Square of the viscosity Filtration time only Washing time only Square root of the velocity Square of the viscosity Filtration time only 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 Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called Sedimentation Decantation Classification Clarification Sedimentation Decantation Classification Clarification ANSWER DOWNLOAD EXAMIANS APP
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