Mechanical Operations MCQs

__________ are mixed using ribbon blenders.

Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of 'scrappers'?

Which of the following is not categorised as a "mechanical operation"?

Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the

Screen capacity is not a function of

Coal is finally pulverised to 200 mesh size for burning in boilers by a

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)

__________ baffles are provided in ball mills.

For grinding of cereals, grains, spices, pigments, saw dust, cork etc., the most extensively used size reduction equipment is a