Mechanical Operations For a non-spherical particle, the sphericity Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle Is always less than 1 Has the dimension of length Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle Is always less than 1 Has the dimension of length Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations With increase in the capacity of screens, the screen effectiveness Increases Remains unchanged Decreases Decreases exponentially Increases Remains unchanged Decreases Decreases exponentially ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) 2 D D 1.5 D 0.5 D 2 D D 1.5 D 0.5 D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In the cyclone separator used for separation of dust from dust laden gas, the gas Enters the cyclone from the top Both B and C Is admitted tangentially at high velocity Develops a helical motion inside the chamber Enters the cyclone from the top Both B and C Is admitted tangentially at high velocity Develops a helical motion inside the chamber ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Out of the following size reduction equipments, the maximum feed size can be accepted by the Jaw crusher Jet pulveriser Ball mill Tube mill Jaw crusher Jet pulveriser Ball mill Tube mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with __________ to get the same for dry grinding. 1 4.34 0.5 1.34 1 4.34 0.5 1.34 ANSWER DOWNLOAD EXAMIANS APP
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