[Solved] Ventilators are provided near the ceiling of the room because –

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Q.	Ventilators are provided near the ceiling of the room because –
A.	the exhaled warmer air rises up and goes out
B.	these provide cross ventilation in the room
C.	these provide some sunlight in the room
D.	these do not look nice in the lower part
Answer» A. the exhaled warmer air rises up and goes out
Explanation: Ventilation is a room air distribution strategy where conditioned outdoor air is supplied at floor level and extracted above the occupied zone, usually at ceiling height. A typical displacement ventilation system, such as one in an office space, supplies conditioned cool air from an air handling unit (AHU) through a low induction diffuser. The cool air spreads through the floor of the space and then rises as the air warms due to heat exchange with heat sources in the space (e.g., occupants, computers, lights).

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