Mechanical Operations Production rate __________ with increased fineness, with a given energy input to the size reduction machine. Remains unchanged Decreases Increases May increase or decrease; depends on the machine Remains unchanged Decreases Increases May increase or decrease; depends on the machine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is defined as the Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one tonne of feed to 200 microns Energy needed to crush one ton of feed to 100 microns Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one tonne of feed to 200 microns Energy needed to crush one ton of feed to 100 microns Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filter medium resistance is important during the __________ of filtration. None of these Early stages Entire process Final stages None of these Early stages Entire process Final stages 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
Mechanical Operations In case of a revolving mill, wet grinding compared to dry grinding None of these Requires more energy Has less capacity Complicates handling & classification of the product None of these Requires more energy Has less capacity Complicates handling & classification of the product ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For laminar flow of filtrate through the cake deposited on septum, which of the following will be valid? Blake-Plummer equation Kozney-Karman equation Leva None of these Blake-Plummer equation Kozney-Karman equation Leva None of these ANSWER DOWNLOAD EXAMIANS APP
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