Question:medium

For an air cooler to work at maximum efficiency:

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Evaporative cooling efficiency is highly dependent on the relative humidity of the intake air. Low humidity (dry air) equals high evaporation rates and better cooling.

Updated On: Apr 19, 2026

Placed away from window & water has salt
Placed away from window & no salt in water
Placed towards window & water has salt
Placed towards window & no salt in water

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The Correct Option is D

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