Problem If the flow of 0.10 m³/s of water is to be maintained in the system shown, what power must be added to the water by the pump? The pipe is made of forged steel and is 15 cm in diameter. Neglect all the component head losses and consider only the major head loss for this problem. Assume that α₁ = α₂ = 1. Temperature is 15°C. Water Elevation 10 m T = 10°C 40 m Elevation 13 m + 40 m

Two reservoirs are connected as shown in the figure. The difference in Elevation of the two reservoirs is 6.88m. Darcy-Weisbach friction factor for all pipes, f=0.0238.    Pipe 1: Length=3500m Diameter=70cm   Pipe 2 and 3: Length=1750m Diameter=35cm Compute the discharge in the pipe one in L/s. Compute the discharge in the pipe three in L/s.

Reservoir A has an elevation of 100 m. A pipe is connected from Reservoir A to Reservoir B. It has a length of 1000 m. and diameter of 600 mm. A pump is installed near Reservoir A and has a rating of 500 hp. If C = 110, rate flow is 550 L/s, 1. Determine the headloss in meters in the pipe. (ANSWER: 7.107) 2. Determine the head supplied by the pump in meters. (ANSWER: 69.132) 3. Compute the max elevation in meters of Reservoir B that pump could supply. (ANSWER : 162.025)

A water main line is composed of two pipes connected in series, pipes AB and BC. Pipe AB is 500 m long and 30 cm in diameter while pipe BC is 800 m long and 20 cm in diameter. Point C is 10 m higher than point A. The pressure at point C is 3 kg per square cm higher than the pressure at point A and the coefficient for minor head losses due to contraction and enlargement are 0.40 and 0.25 respectively. Determine the discharge and flow direction on the water main line using Darcy-Weisbach formula with f = 0.02 for all pipes. Draw approximately the EGL and HGL.

A 90% efficient pump lifts water from a lower reservoir a shown in the figure. The head loss in the 150mm pipe is 3 times the velocity head in that pipe and the head loss in the 100mm pipe is 20 timew the velocity head in that pipe. A.If the desired flow rate is 20L/s ehat shoukd be the powet input of the pump in Kw? Choices: 42.9,28.8,32.0,38.6 B.Compute the pressure head, in m of water, at the suction line before the pump Choices: 12.39,10.29,9.74,7.56 C.Compute the pressure head,in m of water, at the discharge line right after the pump. Choices: 156.26,136.80,139.53,145.20

90.Water is pumped from the reservoir with a surface elevation of 200 m across the valley to another reservoir of surface elevation 216 m through a pipe line of 1300 m long and 30 cm diameter if during pumping the pressure is 5.6 kg/cm2 at a point half way along the pipe and at an elevation of 168 m. Compute the discharge and power of the pump taking friction factor as 0.02 neglect minor losses.

2] A pipe discharges 130 lps of water into a reservoir at a point 1.85 m belowthe water surface. At point A the diameter is 25.4 cm and the center of the pipe is 1.25m above the water surface. At the discharge end the pipe is 30.5 cm. If the head lossfrom A to the reservoir is 0.7 m, determine the pressure in A.

5.10 The water is supplied at the rate of 3 m3 per minute from a height of 4 m to a hydraulic ram, which raises 0.3 m3/minute to a height of 30 m from the ram. The length and diameter of the delivery pipe is 100 m and 70 mm respectively. Determine the D' Aubuisson's efficiency of the hydraulic ram if the co-efficiency of friction f = .009.

Water of temperature 30o is flowing with flow rate 0.055 liters/s in a straight 50mm diameter uPVC pipe of length 450. Determine the head loss for this length by using Darcy Weisbach formula, and Hazen-William's formula.

Water flows from Reservoir A (Elev 125 m.) to a turbine (Elev 67 m.) then discharges into tailtrace B (Elev 26 m.) as shown. The head loss from (A) to (1) is 2 times the velocity head in the pipe, and the head loss from (2) to (b) is 1.97 times the velocity head in the pipe. If the flow rate in the pipe is 39 ft3/s, diameter of all pipes is 30 in, calculate the horsepower generated by the turbine. Use 1 hp = 550 lb-ft/s. ANS : 1,000,000