The main fan operating point of a ventilation system is shown in the figure below. If an NPV of 200 Pa assists the ventilation system, the resultant pressure (Pa) and quantity (m3) generated by the
A. 500, 681
B. 600, 63
C. 640, 55
D. 400, 63
E. 640, 66
Answer: Option E
This Question Belongs to Mining Engineering >> Mine Ventilation
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