Mining Engineering
GATE MN topic:underground-hazards PYQs
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Questions 31–31 of 31. Imported answers require independent review unless marked reviewed.
Question 48
Open questionMNNAT2 marksNeeds review
In a mine, 200 and 250 persons are deployed in the Panels A and B (shown in figure) respectively in the largest shift.
The panels produce 400 and 500 tonne/day respectively. The resistances of panels A and B are 0.3 Ns²m⁻⁸ and 0.4 Ns²m⁻⁸ respectively and the combined resistance of shaft and trunk airways is 0.5 Ns²m⁻⁸. The operating static pressure of the fan in Pa to provide the minimum air quantities in the panels as per CMR 1957 is ________
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