Ultrafine grinders operate principally by_________________?
Correct answer: C. Attrition
- A. Slow compression
- B. Impact
- C. Attrition
- D. Cutting action
Explanation
Ultrafine grinding requires very small size reduction and is chiefly achieved by attrition, where particles rub against one another or the grinding surface. Compression and cutting are more typical of coarser or fibrous materials.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ρ= density of particles) ?
Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of_____________________?
According to Bond crushing law, the work required to form particle of size 'D' from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively) ?
Sauter mean diameter is the same as the ______________ mean diameter?
Rod mills employed for grinding_________________?
Crushing efficiency of a machine ranges between __________________ percent?