Mechanical Operations Use of grinding aids results in the Enhanced production rate Both A & B Finer products Neither A nor B Enhanced production rate Both A & B Finer products Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Kick's law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick's constant is KW. sec/kg KWh/kg Kg/sec KWh/sec. kg KW. sec/kg KWh/kg Kg/sec KWh/sec. kg ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In closed circuit grinding as compared to open circuit grinding, the Production rate at a given limiting size is lower Specific surface of product is more Operation is economical Product has lesser size uniformity Production rate at a given limiting size is lower Specific surface of product is more Operation is economical Product has lesser size uniformity ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be 3.34 Wi Wi 1.34 Wi 0.5 Wi 3.34 Wi Wi 1.34 Wi 0.5 Wi 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 The specific cake resistance for compressible sludges is a function of the pressure drop Over cake Overall Over medium None of these Over cake Overall Over medium None of these ANSWER DOWNLOAD EXAMIANS APP
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