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Question # Question Course Outcome Codes CO2 1. Water flows at the rate of 7.5 m/s through 75-mm diameter pipe (Pipe 1) and leaves through 50-mm diameter and 65-mm diameter pipes at the rate of 3 m/s and 3.5 m/s, respectively as shown in the figure. Air at the top of the tank escapes through a 50-mm diameter vent. Calculate dh/dt and the velocity of air flow through the vent. Assume the flow to be incompressible. (10pts) VE? D-50mm Ita AIR ME WATER D=50mm V2 - 3 m/s D-75mm V, 3.5 m/s D.-65mm 600 mm CO2 2. CO2 3. A liquid having sp. gr. Of 2.0 is flowing in a 50mm diameter pipe. The total head at a given point was found to be 17.5 Joule per Newton. The elevation of the pipe above the datum of 3m and the pressure in the pipe is 65.6 kPa. Compute the velocity of flow and the horsepower in the stream at that point. (10pts) A fire pump delivers water through a 300-mm diameter main to a hydrant to which is connected a cotton rubber-lined fire hose 100mm in diameter terminating to a 25-mm diameter nozzle. The nozzle is 2.5m above the hydrant and 16m above the pump. Assuming frictional losses of 3m from the pump to the hydrant, 2m in the hydrant, 10m from the hydrant to the base of the nozzle, and the loss in the nozzle of 4% of the velocity head in the jet, to what vertical height can the jet be thrown if the gage pressure right after the pump is 550 kPa? (10pts) A 600-mm diameter pipe connects two reservoir whose differences in water surface elevation is 48m. The pipe is 3500 m long and has the following pipe fittings: 2 globe valves, 4 short radius elbows, and one gate valve half open. The values of loss factors for pipe fittings is given in the table below. Using the equivalent length method, estimate the flow through the pipe in L/s/ Assume f=0.015. (10pts) CO2 4. L/D 350 175 75 67 Fitting Globe valve, fully open Angle valve, fully open Close-return bend T, through side outlet Short-radius elbow Medium-radius elbow Long-radius elbow 45° Elbow Gate valve, wide open K 10 5 2.2 1.8 0.90 0.75 0.60 0.42 0.19 32 27 20 15 7