# Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan _____ ? with Answer - Chemical Engineering Mcqs | TestPrep

> Solved MCQ: Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan _____ ? Correct Answer: C. Both A. & B.. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan _____ ?

Direct Answer & Quick Reference

The correct option is **C. Both A. & B.**.

A. With greater number of blades

B. Of increased diameter

C. Both A. & B. **(Correct Answer)**

D. Neither A. nor B.

✨ Explain with AI

Verified Key: C. Both A. & B.
Solved by 1,661+ students

Verified against official examination board answer keys and standard curriculum textbooks.

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