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______ are used in fine screen so that they do not get clogged up.

(a) Automatic strainers

(b) Spray aerators

(c) Cascade aerators

(d) Gravel bed aerators

I got this question by my school teacher while I was bunking the class.

This intriguing question comes from Types of Screens and Aerators topic in chapter Unit Operations, Screening and Aeration of Environmental Engineering

1 Answer

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Best answer
Correct option is (a) Automatic strainers

For explanation I would say: Automatic strainers are self cleaning devices that remove solids from the flowing liquid continuously and help in a fine screen so that it does not get clogged up.

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