Mechanical Operations Pick out the wrong statement pertaining to the roll crushers. Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced For hard material's crushing, the reduction ratio should not exceed 4 Maximum feed size determines the required roll diameter Both the rolls run necessarily at the same speed Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced For hard material's crushing, the reduction ratio should not exceed 4 Maximum feed size determines the required roll diameter Both the rolls run necessarily at the same speed ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For achieving maximum capacity of the ball mill, the ball charge should be equal to about __________ percent of the ball mill volume. 25 10 75 50 25 10 75 50 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific cake resistance for compressible sludges is a function of the pressure drop Overall Over cake None of these Over medium Overall Over cake None of these Over medium ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In screen analysis, the notation +5 mm/-10 mm means particles passing through Both 5 mm and 10 mm screens Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen 10 mm screen and retained on 5 mm screen Both 5 mm and 10 mm screens Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen 10 mm screen and retained on 5 mm screen ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the Cyclone separator Gravity settling chamber Venturi atomiser Electro-static precipitator Cyclone separator Gravity settling chamber Venturi atomiser Electro-static precipitator ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Close circuit grinding by a ball mill with air sweeping employs a Classifier Cyclone separator between mill & classifier Both A & B Neither A nor B Classifier Cyclone separator between mill & classifier Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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