Mechanical Operations The speed of a rotary drum vacuum filter may be about __________ rpm. 100 1 500 50 100 1 500 50 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Paddle agitator Produces axial flow Moves at very high speed None of these Is suitable for mixing low viscosity liquids Produces axial flow Moves at very high speed None of these Is suitable for mixing low viscosity liquids ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's crushing law states that Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product For a given machine and feed, crushing efficiency is dependent on the size of the feed & product Work required in crushing is proportional to the new surface created Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product For a given machine and feed, crushing efficiency is dependent on the size of the feed & product Work required in crushing is proportional to the new surface created Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Agglomeration of individual particles into clusters (flocs) is called flocculation. To prevent flocculation, the most commonly used dispersing agents are Sulphates Carbonates Silicates & phosphates Bi-carbonates Sulphates Carbonates Silicates & phosphates Bi-carbonates ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sulphuric acid mist is arrested by using a __________ scrubber. Packed wet Venturi Hollow wet Co-current Packed wet Venturi Hollow wet Co-current ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Bucket elevators are not suitable for the vertical lifting of __________ materials. Small lumpy (e.g. grains and sand) Sticky (e.g. clay paste) Free flowing Fine (e.g. - 200 mesh size coal) Small lumpy (e.g. grains and sand) Sticky (e.g. clay paste) Free flowing Fine (e.g. - 200 mesh size coal) ANSWER DOWNLOAD EXAMIANS APP
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