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Chemical Engineering · Q432

Mechanical Operations

Engineering and GATE · Chemical Engineering · question 432

Q432

Work index is defined as the

A.
Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen
Answer
B.
Energy needed to crush one tonne of feed to 200 microns
C.
Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen
D.
Energy needed to crush one ton of feed to 100 microns

Answer: Option A

Solution

Answer: Option A
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