Hamad Mechanical Operations 10/11/2020 A. gm/cm2 B. cm/gm C. cm/gm2 D. gm/gm Related Mcqs: 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_____________________?A. 0.33-0.45 B. 1.33-1.45 C. 0.5-2 D. 1.5-2.5... Vacuum filter is most suitable for the_______________?A. Removal of fines from liquid B. Liquids having high vapour pressure C. Liquids of very high viscosity D. None of these... The main size reduction operation in ultrafine grinders is_____________?A. Cutting B. Attrition C. Compression D. Impact...
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