Exhaust system, supply system, air conditioning, etc. comes under ________ type of ventilation system.(a) Natural(b) Mechanical(c) Man made(d) DoorsI have been asked this question during an online exam.My doubt is from Types of Ventilation topic in chapter Acoustics and Ventilation of Construction & Building Materials

Exhaust system, supply system, air conditioning, etc. comes under ____

1.	Exhaust system, supply system, air conditioning, etc. comes under ________ type of ventilation system.(a) Natural(b) Mechanical(c) Man made(d) DoorsI have been asked this question during an online exam.My doubt is from Types of Ventilation topic in chapter Acoustics and Ventilation of Construction & Building Materials
Answer» Correct CHOICE is (B) MECHANICAL The BEST I can explain: The mechanical system is costly, but it results in a considerable INCREASE in the efficiency of the person under the command of the system. This system is adopted for big offices, banks, industrial plants, theatres, etc.

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