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. Secondary Primary Ultrafine Fine Secondary Primary Ultrafine Fine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following oxides is not present in hematite iron ore? Manganese oxide Calcium oxide Titanium oxide Cobalt oxide Manganese oxide Calcium oxide Titanium oxide Cobalt oxide ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Driving force in case of filtration by a centrifuge is the Centrifugal pressure exerted by the liquid Narrow diameter of the vessel Formation of highly porous cake Speed of the centrifuge Centrifugal pressure exerted by the liquid Narrow diameter of the vessel Formation of highly porous cake Speed of the centrifuge 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 In screen analysis, the notation +5 mm/-10 mm means particles passing through Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen Both 5 mm and 10 mm screens 10 mm screen and retained on 5 mm screen Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen Both 5 mm and 10 mm screens 10 mm screen and retained on 5 mm screen ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of Cams or eccentric shafts Unblanced fly wheels Electromagnets Either A, B or C Cams or eccentric shafts Unblanced fly wheels Electromagnets Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
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