Intermediate Mine Environmental Control Certificate Exam Practice Questions - Intermediate Certificate In Mine Environmental Control (South Africa) Exam

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A mine airway has a length of 500 m, a perimeter of 12 m, a cross-sectional area of 9 m², and an Atkinson friction factor k = 0.010 N·s²/m⁴. If air flows at a mean velocity of 4.0 m/s, what is the pressure drop due to friction?

106.7 Pa 80.0 Pa 160.0 Pa 240.0 Pa

Correct Answer:

106.7 Pa

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