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. Concentrate None of these Tailing Middling Concentrate None of these Tailing Middling ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Energy requirement (per unit mass of material crushed/ground) is highest for Ball mill Fluid energy mill Jaw crusher Rod mill Ball mill Fluid energy mill Jaw crusher Rod mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Production rate __________ with increased fineness, with a given energy input to the size reduction machine. Remains unchanged Increases Decreases May increase or decrease; depends on the machine Remains unchanged Increases Decreases May increase or decrease; depends on the machine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A. __________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end. Tube Pebble Rod Compartment Tube Pebble Rod Compartment ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Jigging is a technique by which different particles can be Separated by particle density Separated by particle size Mixed Separated by particle shape Separated by particle density Separated by particle size Mixed Separated by particle shape ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Coal is finally pulverised to 200 mesh size for burning in boilers by a Ball mill Roll crusher Gyratory crusher Hammer crusher Ball mill Roll crusher Gyratory crusher Hammer crusher ANSWER DOWNLOAD EXAMIANS APP
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