Mechanical Operations
Which of the following conveyors cannot be recommended for transportation of abrasive materials?

Apron conveyor
Chain conveyor
Belt conveyor
Flight conveyor

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Mechanical Operations
Pick out the wrong statement pertaining to the turbine agitator.

Pitched blade turbine agitator gives only radial flow with complete absence of the axial flow
Turbine agitator should be located at a height not less than one agitator diameter length from the bottom. If the depth of liquid in the tank is more than twice the agitator diameter, two agitators sh
Recommended peripheral speed for the turbine agitator is 200-250 metres/minute
Generally, the diameter of the agitator is kept between l/3rd to l/6th of the tank diameter while the blade length is l/4th of agitator diameter (with central disc, it is l/8th of the agitator diamete

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Mechanical Operations
Rod mills employed for grinding

Employ steel rods of 2-12 cms diameter extending over full length of the mill
Is useful for handling sticky materials
All of these
Employ a steel shell having L/D ratio of 1.5 to 3.0

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