The actual velocity in the contracted section of a jet of liquid issuing from a 5 cm diameter orifice is 7.5 m/s, under a head of 4 m. If the measured discharge is 0.008 m³/s, then the (round off to two decimal places) coefficient of contraction is

A sharp-edged orifice having a diameter of 0.0285 m is installed in a 0.25-m pipe through which a liquid having a density of 1050 kg/m3 and a viscosity of 1.5 cp is flowing. The measured pressure difference across the orifice is 120 kN/m2. Calculate the volumetric flow rate in li/s. Assume that Co = 0.61.

Situation 3: A tank with a frustum of a cone having its bases horizontal and axis vertical is 4 m high and is filled with water. It has diameter of 3 m at the top and 1 m at the bottom. The bottom contains orifice whose average coefficient of discharge is C = 0.63 35. What is the size of the orifice that will empty the tank in 7 mins and 20 seconds 100 mm diameter 75 mm diameter 50 mm diameter 125 mm diameter 36. Determine the time to needed to drop the water level to 3 m 255 seconds 120 seconds 350 second 145 seconds 37. Determine the depth of water after one-half of its content is discharge through the orifice. 2.00 m 2.15 m 2.56 m 2.82 m 38. How long it will take to discharge one-half of its initial volume? 260 seconds 244 seconds 200 seconds 168 seconds

Determine the radius of the orifice that will allow a tank of horizontal cross-section of 2.5 m^2 to have its liquid surface draw down at the rate of 0.2 m/s for a constant head of 4m on the orifice with Cc= 0.66 and Cv= 0.96