Question:medium

In summer, an air cooler is used in a room. To achieve maximum cooling efficiency, which of the following setups is best?

Show Hint

Think of an air cooler as a device that 'trades' air temperature for air humidity. To keep this trade going efficiently, you need a constant source of 'low-humidity' currency (fresh outdoor air) and a way to get rid of the 'high-humidity' product (by venting the room). Adding salt is like a tax on the transaction, making it less efficient.

Updated On: Apr 19, 2026

Cooler fan facing the window, no salt in water
Cooler fan facing away from window, no salt
Cooler fan facing window, salt added to water
Cooler fan facing away from window, salt added

Show Solution

The Correct Option is A

Solution and Explanation

Was this answer helpful?

0

Top Questions on kinetic theory

Questions Asked in IIITH UGEE exam

Eight points in 3-D space with some pairwise distances known. How many coordinates are required to determine full orientation?

IIITH UGEE - 2025
permutations and combinations

In a reverse-alphabet code, each letter is replaced by its opposite counterpart (A (leftrightarrow) Z, B (leftrightarrow) Y, dots). You are given the string: “XOZ I TVO ZMTFZTV NL WVO”. After decoding the underlined parts, which meaningful English words are obtained?

IIITH UGEE - 2025
Coding Decoding

A company adds storage: (2^4) TB (1st month), (2^5) (2nd), (2^6) (3rd)... Total additional storage from 4th to n-th month is:

IIITH UGEE - 2025
Sequence and Series

In a cryptic language system, each alphabet is substituted with its opposite letter in the English alphabet, such that A (leftrightarrow) Z, B (leftrightarrow) Y, C (leftrightarrow) X, and so on. Using this logic, decode the phrase: “RMWZR RH NB XLFMGIB”. What does the original English sentence say?

IIITH UGEE - 2025
Coding Decoding