GATE ME 2017 ME-2 Q39: Fluid Mechanics

The arrangement shown in the figure measures the velocity

of a gas of density 1 kg/m

flowing through a pipe. The acceleration due to gravity is 9.81 m/s

. If the manometric fluid is water (density 1000 kg/m

) and the velocity

is 20 m/s, the differential head

(in mm) between the two arms of the manometer is ____________.

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