Que-
At a fan pressure of 450 Pascal, 50m³/s of air flows through a mine. when fan stops 10 m³/s of air still flows in the same direction. The mine resistance in Ns²/m⁸ is.
A) 0.1731
B) 0.1800
C) 0.1875
D) 0.2372
Ans: C) 0.1875
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