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- 7.1 MHIS the total head at inlet and h is the head lost 7.5 Water f due to friction, efficiency of power transmission through a straight pipe is given by diamet below. H-h (a) H (b) H+h V H-h (c) H+h (d) H-h The co [ESE : 1995] decrea (a) 3, 7.2 Water hammer in pipelines takes place when (a) fluid is flowing with high velocity (b) fluid is flowing with high pressure (c) flowing fluid is suddenly brought to rest by closing a valve (d) flowing fluid is brought to rest by gradually closing a valve (c) 1, 7.6 During throus TO JESE : 1995] 12 7.3 Assertion (A): There will be a redistribution of pressure and velocity from inside of the bend to the outside while a fluid flows through a pipe measu (a) th in (b) th- (c) the (d) th bend. Reason (R): The spacing between stream lines will increase towards the outside wall and decrease towards the inside wall to inside of the bend. (a) Both A and R are individually true andR is the correct explanation of A (b) Both A and R are individually true but…Q.5 A 30 cm diameter Horizontal Pipe terminates in a nozzle with exit diameter of 5 cm. If water flows through the Pipe at a 3 rate of 0.2 m/s. What force (in MN) will be exerted by fluid on nozzle. Type your answer here.. SUBMITP (6-5) Two centrifugal pumps are connected in parallel in a given pumping system. Plot total head Ah against capacity Q pump and system curves for both pumps running on the basis of the following data: Operating data for pump 1 Operating data for pump 2 Ahm, 40.0 35.0 30.0 25.0 Ah m. 0.0 35 30 25 Qim³/h. 169 209 239 265 Q₂m/h 0 136 203 267 data for system Ah m, 20.0 25.0 30.0 35.0 Q.m³/h, 0 244 372 470
- Consider the two flows below involving a pipe and nozzle where the inlet area is greater than the outlet area (A, > A2). The flow rate is the same in both case A and B. The only difference in geometry between A and B is the length of pipe. FA and FB are the horizontal anchoring forces for cases A and B, respectively. Patm P1,A A) V1 FA V2 Patm P1,B B) V1 FB V2 Select ALL true statements below. V1 > V2 |V1 P1,8 > Patm P1,8 > P1,A> Patm FA>FB FAQ.5 A pump circulates water through a closed pipe network connecting a water heater and a heating coil (heat exchanger) in a room. The total length of the pipe is 28 m and the diameter is 32 mm. There are six 90°-elbows and a globe valve in the network. The head loss through the water heater and the heating coil are 1.6 m and 1.2 m respectively. The water flow rate is 0.88 Ls!. The system uses schedule-40 steel pipes with threaded fittings. Calculate the (i) flow velocity and the unit pressure loss in the pipe. (ii) increase in head across the pump. (iii) power input to the pump if the efficiency of the pump is 70%.Q.4 A 200 mm diameter pipeline is laid on the ground. At a particular point, the piezometric head is 20 m. Total energy head of water at a point is 26 m. The Discharge (L/s) of water through the pipe is Type your answer here.. SUBMIT- Energy equation For steady incompressible flow for one Inlet and one outlet system Power form: W A In terms of Heads: P A P.X 2g sh mgh, POR.. Reynolds Number Re= Power = mass flux g hight: = mgh Wigh P Inertial forces V.,D Viscous forces P D. - Formula sheet 44, Cross sectional are P Print 2100 Res 4000 +α +²₂++h₂ VDpVD Flow in circular pipes Re 2300 laminar flow transitional flow Re 4000 turbulent flow 2x " +1+E₁ Determine: a. The length of segment B (La). b. The total pressure drop (pi-P2). Ch Welke PD Levve Aut L = 250 m O Correction Factor: o Laminar pipe flow : a = 2 o Turbulent flow in a pipe: a = 1 150 m с Beter Au Question 1 For the horizontal series-parallel system of the figure below, all pipes are 7 cm diameter asphalted cast iron (r= 0.12 mm) filled with water at 20°C (- 998 kg/m', -0.001 kg/m.s). The total flow rate is Q-0.0269 m/s, the lengths of segments A and Care LA-250 m and Le - 150 m, and velocity in segment A is l'A- 2.04 m/s. Neglect all minor losses. A (hem 2…Q1/ For fig shown if water flow rate is 60 lit/s , Find (h) Note that Density: Pwater = 1 kg/m Pair = 1 kg/m 3 D, = 5 00mm air Water 0.5 m Water O2 = 25cm 1)find Step 1: Known, UnknownStep 2: SchematicStep 3: FormulaStep 4: CalculationsStep 5: Discussion A 30 cm diameter pipe, conveying water, branches into two pipes of diameters20 cm and 15 cmrespectively. If the average velocity in the 30 cm diameter pipe is 2.5 m/s, find the discharge inthis pipe (m3/s). Also determine the velocity (m/s) in 15 cm pipe if the average velocity in 20cm diameter pipe is 2 m/s.Q5/ Oil flows in a 0.3 (m) diameter pipe with a flow velocity of 2.7 (m/s). The physical properties of Oil are: 1- Dynamic viscosity is 0.39 (N.s/m²). 2- Density, p = 950 (kg/m³). Find: 1- The value of Reynold's Number Re and Mention the Type of flow. 2- The value of coefficient of friction f of the pipe. ---- ----- --WATER Flows THOvGH A SPHON As SHOWN BE ow, THE TUBE HAS A CONSTANT DIAMETER, D= kM Pa 2.5cm Q = lo w% WATER 8: lo00 kg/u3 THE HeIGHT OF THE HGHEST POINT IN THE TUBE is h, AN» THE PRESSURE INSIDE is PH CONSIDER INviscio, INCOMPRESsiole Flow. a caloulaTE THE Velocire y oF THE FlUID INSIDE THE TUBE. b) caloulaTE THE HeiGHT DIFFERENCE l To THE arlET of THE TUBE IF WATER EXTS AT ATMOSPHERIC PRESSURE c) calaolaTE PH As A FUNCTION OF h. d) WHAT is THE HAKİMUM HEİGHT BEFORE THE PRESSURE WoulD BE NEGATIVE PiK . e) WHAT WoulD HAPPEN FOR A HeiGHTrh LARGER THAN THE VAlUE DEERMINED N C)A process tank has two input streams-Stream 1 at mass flow rate F1 and Stream 2 at mass 1now rate F2. The tank's effluent stream, at flow rate F, discharges through a fixed valve to atmospheric pressure. Pressure drop across the valve is proportional to the flow rate squared. The cross- sectional area of the tank, A, is 5m?, and the mass density of all streams is 940 kg/m³. (a) Draw a schematic diagram of the process and write an appropriate dynamic model for the tank level. What is the corresponding steady-state model? (b) At initial steady-state conditions, with F1 =2.0 kg/s and F2 =1.2 kg/s, the tank level is 2.25 m. What is the value of the valve constant (give units)? (c) A process control engineer decides to use a feed-forward controller to hold the level approximately constant at the set-point value (hsp=2.25 m) by measuring F1 and manipulating F2. What is the mathematical relation that will be used in the controller? If the F1 measurement is not very accurate and always…SEE MORE QUESTIONS