In what type of filter does the feed enter at the top of the filter, cascade down though a filtering medium, and exit at the bottom of the filter?

A. Gravity
B. Vacuum
C. Suction
D. Mechanical


A. Correct. Gravity filters make use of simple gravitational forces by having the feed enter at the top of the filter, cascade down though a filtering medium, and exit at the bottom of the filter.
B. Incorrect. A vacuum filtration system uses a vacuum pump to pull feed through a filter medium, trapping the contaminants on the surface of the medium and allowing the clean fluid stream to pass through.
C. Incorrect. Suction is not a type of filter.
D. Incorrect. Mechanical filters utilize a mechanical means, such as a strainer or cartridge, to remove particles from the feed stream.

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