Multiple Choice Question (MCQ)
Question: Which atmospheric standard air is used in calculating air velocity?
A.
23 Degree Centigrade and 760 mm
B.
22 Degree Centigrade and 760 mm
C.
21 Degree Centigrade and 760 mm
D.
20 Degree Centigrade and 760 mm
Correct Answer: 21 Degree Centigrade and 760 mm