Mechanical Operations In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced. Middling Tailing None of these Concentrate Middling Tailing None of these Concentrate ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Highly viscous liquids & pastes are agitated by None of these Turbine agitators Multiple blade paddles Propellers None of these Turbine agitators Multiple blade paddles Propellers ANSWER DOWNLOAD EXAMIANS APP
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 Capacity of centrifuge is increased Linear speed of the basket is halved Centrifugal force is doubled Linear speed of the basket is doubled Capacity of centrifuge is increased Linear speed of the basket is halved Centrifugal force is doubled ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The reduction ratio for grinders is defined as(where, Df and Dp are average diameters of feed and product respectively). None of these Dp/Df Df/Dp Df - Dp None of these Dp/Df Df/Dp Df - Dp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a revolving mill, wet grinding compared to dry grinding Has less capacity None of these Requires more energy Complicates handling & classification of the product Has less capacity None of these Requires more energy Complicates handling & classification of the product ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size measurement of ultrafine particles can be best expressed in terms of Surface area per unit mass Micron Screen size Centimetre Surface area per unit mass Micron Screen size Centimetre ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS