Q47
The fan drift pressure readings and fan quantities are measured to be 500 Pa and 65 m3/s respectively at the time when NVP aids fan pressure. On reversal, the fan delivers a quantity of 50 m3/s while acting against NVP with fan drift pressure of 600 Pa. Assuming that the NVP remains constant in both cases the total resistance of the mine in Ns2/m8 will be
A.
0.9487
B.
0.2750
C.
0.4105
D.
0.1635
AnswerAnswer: Option D
Solution
Answer: Option D
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