Ventilation arising from the temperature difference between outside and inside takes place due to ________ effect.

The ____________ is the degree of sensation.

Which of the following constructions is effective against both air-borne and structure-borne sounds?

The rate of ventilation depends on both the wind effect and the stack effect.

________________ are made of sheet metal of suitable size and shape to convey the conditioned air.

_______________ defect is due to the lack of reflecting surfaces near the source of sound and excessive absorption of so…

In ___________ process, the fresh air is forced in the room and the vitiated air is allowed to leave the room by itself …

Exhaust system, supply system, air conditioning, etc. comes under ____ type of ventilation system.