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Q9. During calibration, the flow rate through a horizontal venturi meter is measured using a collecting tank.

The venturi meter has an inlet diameter of 76 mm and a throat diameter of 38 mm.

The differential pressure is measured by a U tube manometer with the branches in contact with the meter fluid.

The level difference in the U tube remains constant at 266 mm of mercury when 2200 kg of fluid is collected in 4 minutes.

Calculate EACH of the following:

(a) the differential pressure in N/m² ; (3)

(b) the fluid velocities at the meter inlet and throat; (8)

(c) the meter coefficient of discharge. (5)

Note: relative density of mercury = 13.6

relative density of venturi fluid = 1.01.