Mechanical Operations Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( > 50000 centipoise)? Curved blade turbine Flat blade turbine Propeller Helical screw Curved blade turbine Flat blade turbine Propeller Helical screw ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them. Fluid energy mill, Ball mill, Jaw crusher Jaw crusher, Ball mill, Fluid energy mill Fluid energy mill, Jaw crusher, Ball mill Ball mill, Jaw crusher, Fluid energy mill Fluid energy mill, Ball mill, Jaw crusher Jaw crusher, Ball mill, Fluid energy mill Fluid energy mill, Jaw crusher, Ball mill Ball mill, Jaw crusher, Fluid energy mill 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) 0.5 D D 2 D 1.5 D 0.5 D D 2 D 1.5 D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the Dry chemicals Powdered food & granular materials Heavy tonnages of rocks or gravel Light metal powder down upto 4 meshsize Dry chemicals Powdered food & granular materials Heavy tonnages of rocks or gravel Light metal powder down upto 4 meshsize ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm. 50 0.007 0.3 0.014 50 0.007 0.3 0.014 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Close circuit grinding by a ball mill with air sweeping employs a Both A & B Cyclone separator between mill & classifier Neither A nor B Classifier Both A & B Cyclone separator between mill & classifier Neither A nor B Classifier ANSWER DOWNLOAD EXAMIANS APP
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