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If the direction of the wind is at 45° to one of the faces, negative pressure will be produced on __________

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If the direction of the wind is at 45° to one of the faces, negative pressure will be produced on __________

(a) Windward face

(b) Leeward face

(c) Two windward faces

(d) Two leeward faces

I had been asked this question in class test.

Enquiry is from Air Conditioning topic in chapter Acoustics and Ventilation of Construction & Building Materials

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Correct option is (d) Two leeward faces

Explanation: If the direction of the wind is at 45° to one of the faces, negative pressure will be produced on two leeward faces. Negative pressure will be produced on one leeward face if the direction of the wind is at 90° to one of the faces.

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