The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?

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In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm. This is a case of the _____________ crushing?

A. Primary B. Secondary C. Fine D. Ultrafine...

Rittinger number which designates the new surface produced per unit of mechanical energy absorbed by the material being crushed, depends on the ______________________?

A. State or manner of application of the crushing force B. Ultimate strength of the material C. Elastic constant of the material D. All A., B. and C....

Optimum ratio of operating speed to critical speed of a trommel is_____________________?

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Float and sink test determines the possibility of cleaning of coal by a process based on the___________________?

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Grinding characteristic of a material is given by its___________________?

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