Q21
In a mine ventilation system, the resistances of two splits A and B are 0.5 Ns2m-8 and 2 Ns2m-8 respectively. Combined resistance of two shafts and trunk airways is 0.7 Ns2m-8. A quantity of 20 m3/s of air passes through split A. The total air quantity passing the mine in m3/s is
A.
30
AnswerB.
27
C.
25
D.
17
Answer: Option A
Solution
Answer: Option A
No explanation is given for this question Let's Discuss on Board