A venture meter with diameter of 0.15 m at the throat is installed in an 0.45 m water main. A differential manometer gauge is partially filled with mercury and connected to the meter as shown below. Neglecting loss, what is the discharge through the meter? 0.38 -Mercury (S.G=13-6)
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- 4. An illegal connection was detected along a water 400 mm water supply line made with cast iron pipe (n = 0.012). Before the said illegal connec-tion, the difference in pressure for every 100 meters is 1 meter and after it the difference in pressure per 100 meters is only 0.7 m. Compute the decrease in supply due to this connection.A piezometer and a Pitot tube are tapped into a 3-cmdiameter horizontal water pipe, and the height of the water columris are measured to be 20 cm in the piezometer and 35 cm in the Pitot tube (both measured from the top surface of the pipe). Determine the discharge at the center of the pipe.A conduit is carrying oil ( S = 0.75 ) and its absolute viscosity is 0.25 kg / m-s. If the flow rate is 0.45 cu.m/s Determine the following • The entrance length • The length of the inviscid cone • The length of the profile development given the following situations 1. Circular pipe 800mm 2. rectangular pipe (Width = 800mm, Depth 1200mm)
- A wastewater pump is discharging at a rate of 0.5 m3/s. It has a discharge nozzle diameter of 350 mm and a suction nozzle diameter of 400 mm. The reading on the discharge gage located at the pump centerline is 125kN / (m ^ 2) The value on the suction gage located 0.6 m below the pump centerline is 10 kN / (m ^ 2) Determine the head on the pump with Bernoulli's equation.3: Answer either A- A submerged pipe outlet has the following data: F.S.L of distributary= 100.00 m, F.S.L of watercourse 99.90 m, length of the pipe=9 m, diameter of pipe- 20 cm, coefficient of friction=0.005. 1- Find the discharge through the outlet. F: 0.005 2- Find the behaviour and sensitivity of the outlet. B- A trapezoidal channel with bottom width 3.5 m and side slopes IH:IV on the left and 1.5H:IV on the right. Use n=0.016 and bed slope of 2.6/10000. The channel carries a discharge of 8 m³/s. Determine the depth of the channel.Oil (SG = 0.8, y = 0.010 Pa-s) flows through a 10-cm smooth pipe (length: 100 m) at a discharge of 0.010 m³/s, what is most approximately the head loss? O 7.21 m O 5.23 m O 1.28 m O 2.55 m
- A venturi meter with a throat diameter of 100 mm is fitted in a vertical pipeline of 200 mm diameter with oil of specific gravity 0.88 flowing upwards. Two pressure gauges are fitted at tapping points, one at the throat and the other in the inlet pipe 320 mm below the throat. The difference between the 2 gage pressure readings is 28 kPa. (a) Determine the flow in m^3/s neglecting head losses (b) Working from Bernoulli's equation, determine the difference in levels (in mm) between the two limbs of a mercury manometer if it is connected to the tapping points and the connecting pipes are filled with the same oil Draw illustrations Use 3 decimalsThe discharge Q in a pipe of known f is estimated by using the head loss hf in a length L and diameter D. If an error of 1% is involved in the measurement of D, the corresponding error in the estimation of Q is (a) 2.5% (b) 1.0% (c) 0.4% (d) 5%1. THERE IS A LEAK IN A HORIZONTAL 300 MMDIAMETER PIPELINE. UPSTREAM FROM THE LEAK TWOGAGES 600 METER APART SHOWED A DIFFERENCE OF140 ???. DOWNSTREAM FROM THE LEAK TWO GAGES600 METER APART SHOWED A DIFFERENCE OF 126??? . ASSUMING ? = 0.025. HOW MUCH WATER ISBEING LOST FROM THE PIPE. show answer in litre per sec
- Water Gs=1 1. In a test to determine the discharge coefficient of a 70 by 35 mm Venturi meter, the total weight of water passing through the meter in 5 minutes was 3.5 kN. A mercury differential gage connected to the inlet and throat of the meter showed an average mercury difference during that time of 300 mm.. Determine the actual discharge if the same meter is used later on and a 250 mm difference is then observed. Mercury, Hg Gs = assume, 4 significant figures 2. The diameter of a 3 meter pipe decreases from 450 mm to 150 mm. If the velocity is to decrease uniformly in a linear manner, draw the diameter profile at each 500 mm length interval along the pipe. Discharge is 150 liters per second. Reservoir B 3. A pump draws water at 300 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is 20 times the velocity head in the 200 mm diameter and the head loss from 2 to B is 20 times the velocity head in the 150-mm diameter pipe. Assume your…A 30m long, 20mm diameter steel pipe is used to drain an oil tank determine the discharge when the oil level in the tank is 4m above the exit of the pipe. Neglect minor losses, (assume f = 0.12)(b) Calculate the discharge from a tubewell of 20-cm diameter penetrating fully into a confined aquifer of 20-m thick and having a permeability of 40 m/day. The drawdown in the well is 3 m and zero drawdown at 300 m from the well. If the diameter of the well is doubled, find the percentage increase in the yield, the other conditions remaining the same. State the assumptions in the formula you use. Ans: (1303.7 lpm)