An orifice meter was calibrated for dry air at T=90 F and P=1.3 atm. The calibration data are as follow:

dp(inches of water): 0,0.5,1.0,2.0,3.0,4.0,5.0

Q(ft^3/minute): 0,2.0,3.0,4.2,5.0,5.5,5.8

a- plot the calibration curve for this meter

b- Derive a mathematical relationship describing the calibration curve

c- Calculate the volumetric flow rate when the meter reads 4.5 inches of water

d- Calculate the mass flow rate of air in g/min

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