Mechanical Operations In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of __________ crushing. Fine Secondary Ultrafine Primary Fine Secondary Ultrafine Primary ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The reduction ratio for grinders is defined as(where, Df and Dp are average diameters of feed and product respectively). Df/Dp Dp/Df Df - Dp None of these Df/Dp Dp/Df Df - Dp None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following crushers can be considered as a combination of a jaw crusher and a roller crusher? Fluid energy mill Ball mill Gyratory crusher Rod mill Fluid energy mill Ball mill Gyratory crusher Rod mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its High power consumption in grinding None of these Poor grindability Easier grindability High power consumption in grinding None of these Poor grindability Easier grindability ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations During agitation of liquids, the Froude number is independent for the curves between power number and Reynolds number in baffled system All of these Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller Froude number is used to account for the effect of surface (e.g., the centre vortex) on the power number Froude number is independent for the curves between power number and Reynolds number in baffled system All of these Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller Froude number is used to account for the effect of surface (e.g., the centre vortex) on the power number 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? Compartment mill Tube mill Rod mill Pebble mill Compartment mill Tube mill Rod mill Pebble mill ANSWER DOWNLOAD EXAMIANS APP
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