The total pressure and the static pressure measured at a point in a ventilation duct are 20 mm and 10 mm of water gauge respectively. If density of air is 1.2 kg/m3, the velocity of the air in m/s is
A. 14.08
B. 12.78
C. 8.53
D. 6.24
Answer: Option B
This Question Belongs to Mining Engineering >> Mine Ventilation
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