Hydraulics and Fluid Mechanics in ME
Differential monometer is used to measure

atmospheric pressure
very low pressure
pressure in pipes, channels etc
difference of pressure between two points

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Hydraulics and Fluid Mechanics in ME
If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be

from reservoir B to reservoirs C and A
unpredictable
from reservoir A to reservoirs B and C
from reservoir C to reservoirs A and B

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