Find the discharge Q, through a 15-inch diameter orifice in a vertical wall impounding water at a depth of 7.5 ft above the center of the orfice. The orfice has square edges and discharges freely.

13. A pump draws water from a sump through a vertical 6" pipe. The pump has a horizontal discharge pipe 4" in diameter that is 10.6 ft above the water level in the sump. While pumping 1.25 cfs, gages near the pump at entrance and discharge read -4.6 psi and +25.6 psi, respectively. The discharge gage is 3.0 ft above the suction gage. Compute the horsepower output of the pump and the head lost in the 6" suction pipe.

14.8 attached.

c) A reservoir of water is connected to a 12 inch diameter pipe 50 feet long and capped at the end. The water surface elevation of the reservoir is 82.5 feet, and the capped end of the pipe is at elevation 38.0 feet. Find the pressure in psf at the capped end of the pipe. (Hint: The water is not flowing so the only pressure that builds up is due to the weight of the other water in the system.) d) In the swimming pool shown below determine the resultant hydrostatic force and locate the center of pressure on surface AB. Width = 10.0 ft. e) In the swimming pool shown below determine the resultant hydrostatic force and locate the center of pressure on surface BC. Width = 10.0 ft. Optional Bonus Question f) In the swimming pool shown below determine the resultant hydrostatic force and locate the center of pressure on surface CD. Width = 10.0 ft. 8.0' A B 12.0' C - 8.0' E D 3.0' 5.0'

Situation 7: Water is pumped from reservoir A at elevation 750.0 ft to reservoir E at elevation 800 ft through a 12 inch pipeline. The pressure in the 12 inch pipe at point D, at elevation 650.0', is 80.0 psi. The lost heads are: A to pump suction B is 3.7 ft, pump discharge point C to D is 28.7 times its velocity head, and D to E is 43.2 times its velocity head. (2pts each) 26. Find discharge Q 27. Energy head output of the pump (HA) 28. horsepower supplied by pump BC. (g = 32.2 ft/s, yw = 62.4 lb/ft³ hp(english) = QE 550 EL 750 A 12" 80 psi EL 650' 12"+ D EL 800'

Compute the lost head in a 150-mm pipe if it is necessary to maintain a pressure of 231 kPa at a point upstream and 1.83 m below where the pipe discharges water into the atmosphere at a rate of 0.0556m^3/s. Ans: 21.7 m

V,=5m/s Water enters a 120- horizontal reducing pipe with a velocity of 5m/s and a pressure of 78.48 kNm2. If the diameters atthe entrance and exit sections are 30 cm and 20 cm respecí vely and assuming no degradation of energy within the pipe, find: 60 15. The flow rate passing through the pipe is a) 0.09 m³/s b) 0.1571 m/s c) 0.3534 m/s d) 1.5 m/s 16. The velocity of flow at the exit is a) 11.25 m/s b) 1.77 m/s c) 5.0 m/s d) 25.0m/s 17. The pressure at the exit of the pipe is a) 27.7 kN/m? b) 78.48 kN/m? c) 15.2 kN/m2 d) 81.3 kNm2 18. The horizontal component of the force on the pipe from the water is b) 7315 N a) 7750.7 N c) 5549N d) 9739 N 19. The vertical component of the force on the pipe from the water on pipe is b)4216 N a) 2701 N c) 3459 N d) 5673 N 20. The direction of the resultant force relative to the horizontal direction is b) 23.4. a) 66.6. c) 30. d) 70-

A vertical circular gate 3ft in diameter is subjected to pressure of molasses (sp gr 1.50) on one side. The free surface of the molasses is 8 ft above the top of the gate. Determine the total pressure and thelocations of the center of pressure.

A straight pipe AB, of length 10 m, tapers from a diameter of 40 cm at A to 20 cm at B. The centre line of the pipe is so located that the end Bis 2 m above the level of A. Liquid of specific gravity 0.9 flows through the pipe at 150 litres/ second. Pressure gauges connected at A and B show the readings of 60 kPa and 40 kPa, respectively, Determine the direction of flow.

What is pipe roughness? A pump is located 5 m above the surface = 8170 M/m¹) in a closed tank. The pressure in the space above liquid surface is 35 Kpa. The suction line to the pump is 15 m of 15 cm diameter pipe (/= 0.025). The discharge from the pump is 60 m of 20 cm diameter pipe (/= 0.03). The pipe discharges in a submerged fashion to an open tank whose free liquid surface is 3 m lower than the liquid surface in the pressure tank. If pump puts 1.5 kW Into the liquid, determine the flow rate and the pressure in the pipe on the suction side of the pump. Assume turbulent flow.