A mine airway having cross-section of 2.2 m × 2.2 m and length 500 m contains a bend. Given that the airway friction factor is 0.01 Ns2m-4, shock loss factor for the bend is 0.07 and density of air is 1.2 kg/m3, the equivalent length of the airway in m is
A. 502.31
B. 622.51
C. 534.51
D. 512.31
Answer: Option A
This Question Belongs to Mining Engineering >> Mine Ventilation
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