Section 4: Soil and Water Conservation Engineering
Fluid Mechanics
Subtopic: Hydrostatic pressure and its measurement
Question Statement:
In an ordinary chimney, the draught is 12 mm of water column. Assuming density of water to be 1000 kg·m⁻³, the pressure difference between the outside air and gas at the base of the chimney in Pa is ______. [round off to one decimal place]
Official Answer Key:
117.1 to 118.1
Step-by-Step Solution & Explanation
Pressure = ρ_water × g × h = 1000 × 9.81 × 0.012 = 117.72 Pa.
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