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Social ScienceA fluid of unknown density is used in two manometers—one sealed-end, the other across an orifice in a water pipeline. The readings shown here are obtained on a day when the barometric pressure is 756 mm Hg.
a=5.23m
b=0.2m
What is the pressure drop (mmHg) across the orifice from point a to point b? in mmHg
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atm P=0
Expert Answer
It is given that a fluid of same unknown density is used in two manometers—one sealed-end, the other across an orifice in a water pipeline.
And Barometric pressure which is atmospheric pressure as barometer is used to calculate air pressure is given as: Patm=756 mm Hg.
The reading of level difference between two ends of the manometer in one end sealed is given as: A=5.23 m.
The reading of level difference between two ends of the manometer in attach to orifice meter in a pipeline is given as: B=0.2 m.
Considering the datum line XY and PQ on two manometers one end sealed and attach to orifice meter in the given diagram as below:
Now at Datum line XY in one end sealed manometer
The pressures act on horizontal axis are equal and hence,
Where ρf is the density of unknown fluid
Put the values and we can calcu...
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