Mechanical Operations Colloidal mills are used for __________ grinding. Ultrafine Coarse Intermediate Fine Ultrafine Coarse Intermediate Fine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The main differentiation factor between tube mill and ball mill is the Length to diameter ratio Operating speed Final product size Size of the grinding media Length to diameter ratio Operating speed Final product size Size of the grinding media ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Shell and leaf filter as compared to plate and frame filter Provides more effective washing All of these Entails less labor cost Facilitates filtration under higher pressure Provides more effective washing All of these Entails less labor cost Facilitates filtration under higher pressure ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations If radius of a batch basket centrifuge is halved & the r.p.m. is doubled, then the Centrifugal force is doubled Linear speed of the basket is doubled Capacity of centrifuge is increased Linear speed of the basket is halved Centrifugal force is doubled Linear speed of the basket is doubled Capacity of centrifuge is increased Linear speed of the basket is halved ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be 3.34 Wi 0.5 Wi Wi 1.34 Wi 3.34 Wi 0.5 Wi Wi 1.34 Wi 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 Carbonates Bi-carbonates Silicates & phosphates Sulphates Carbonates Bi-carbonates Silicates & phosphates Sulphates ANSWER DOWNLOAD EXAMIANS APP
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