Mechanical Operations
If radius of a batch basket centrifuge is halved & the r.p.m. is doubled, then the

Linear speed of the basket is doubled
Linear speed of the basket is halved
Capacity of centrifuge is increased
Centrifugal force is doubled

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Mechanical Operations
In case of grinding in a ball mill

All of these
Wet grinding achieves a finer product size than dry grinding
Its capacity decreases with increasing fineness of the products
Grinding cost and power requirement increases with increasing fineness of the products

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

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
Pitched blade turbine agitator gives only radial flow with complete absence of the axial flow

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