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 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 in crushing is proportional to the new surface created For a given machine and feed, crushing efficiency is dependent on the size of the feed & product Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product 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 in crushing is proportional to the new surface created For a given machine and feed, crushing efficiency is dependent on the size of the feed & product ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Flow of filtrate through the cake in a plate and frame filter press is best described by the __________ equation. Hagen-Poiseulle's Fanning's Kremser Kozney-Karman Hagen-Poiseulle's Fanning's Kremser Kozney-Karman ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The capacity of a gyratory crusher is __________ that of a jaw crusher with the same gape, handling the same feed & for the same product size range. 10 times 5 times Same as 2.5 times 10 times 5 times Same as 2.5 times 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 Bi-carbonates Silicates & phosphates Carbonates Sulphates Bi-carbonates Silicates & phosphates Carbonates ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Balls for ball mills are never made of Forged/cast steel Alloy steel Lead Cast iron Forged/cast steel Alloy steel Lead Cast iron 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 ∝ 1/NRe Np ∝ √NRe Np → constant Np ∝ NRe Np ∝ 1/NRe Np ∝ √NRe ANSWER DOWNLOAD EXAMIANS APP
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