Q1: You are in charge of managing a project with six activities. Based on the order of implementingthese activities you developed the following project network: (25 points) (a) Find the estimate of the mean and variance of the duration of each activity. (b) Find the critical path. (c) Find the approximate probability that the project will be complete within 57 days.See Answer
Q1: 2. A cam, with a minimum radius of 25 mm, rotating clockwise at a uniform speed is to be designed to give a roller follower, at the end of a valve rod, motion described below : 1. To raise the valve through 50 mm during 120° rotation of the cam; 2. To keep the valve fully raised through next 30°B 3. To lower the valve during next 120°; and 4. To keep the valve closed during rest of the revolution i.e. 90° ;See Answer
Q1: The wedge shown in the figure below is used to level the member.The coefficient of static friction between the wedge and the two surfaces of contact Determine the horizontal force P that must be applied to begin to push the wedge forward. Neglect the weight of the wedge.See Answer
Q1: 4.9 As shown in Fig. P4.9, river water used to irrigate a field is controlled by a gate. When the gate is raised, water flows steadily with a velocity of 75 ft/s through an opening 8 ft by 3 ft. If the gate is raised for 24 hours, determine the volume of water, in gallons, provided for irrigation. Assume the density of river water is 62.3 lb/ft³.See Answer
Q1: In this coding project you will write a simple client-server program using python sockets. Your program will emulate a simple chat client. For extra-credit , turn your chat program into a simple ascii multiplayer game (see below for spec).See Answer
Q1: Problem 5: System of Nonlinear Equations (MATLAB) Given a system of nonlinear equations: u(x, y, z) = x(x + 2y + 5z - 4) = 0, v(x, y, z) = y(5x + y + 2z - 4) = 0, w(x, y, z) = 2(2x + 5y +z - 4) = 0, (5) (6) (7) 1. Derive all real solutions to this system of equations by hand. Clearly show your work. 2. Write a MATLAB script to obtain the root of this system of non-linear equations using the Newton-Raphson method. Use an initial guess of (x, y, z) = (4.4,-0.8,0.4). How many iterations are needed for the approximate error ca to go below € = 0.1%? 3. Use your solution to Problem 5.2 to generate all the analytical solutions from Problem 5.1 by modifying your initial guesses for (x, y, z).See Answer
Q1: Due 9 November 2020 at 12:20 PM. No late projects will be accepted. No exceptions. The figure above shows a simplified diagram of a water distribution system for a fifteen story building. Line 1 is 150 ft of 3" Sch 40 steel pipe with 7 standard 90° elbows, and a gate valve and a globe valve. Line 2 is 62 ft of 2" Sch 40 steel pipe with 5 standard 90° elbows, and two gate valves. Line 3 is 75 ft of 1" Sch 40 steel pipe with 8 standard 45° elbows, a gate valve and a globe valve. Line 4 is 57 ft of 3/4" Sch 40 steel pipe with 4 standard 90° elbows, a gate valve and a globe valve. Line 2 is 50 ft above the pump, line 3 is 100 ft above the pump, and line 4 is 150 ft above the pump. Determine the pump discharge pressure and the flow rate through each line if the pump is delivering 165 gpm. Redo the analysis assuming the pump curve is given by P = 330 – 0.008Q², in which P is given in psi and Q is given in terms of gpm. If the pump is insufficient to supply water to the storage tanks, determine the minimum specifications that would be required and recommend a specific make and model that is sold online.See Answer
Q1: Q2 (40 pts): Consider the water distribution network shown in the figure below and the different water demands assigned to each node given in the accompanying table. Assume all nodes have the same elevation. Part A: Use the Darcy-Weisbach method to determine the discharge in each PVC ("smooth") pipe and the pressure head at each node. An example calculation for each step is required, but you can show the convergence of your solutions by presenting only the tables (from Excel) for each iteration. Please ensure your tables are legible, easy to follow, and organized. Submit the Excel file as part of your .zip folder. Part B: Solve the problem using EPANET. How do the results compare to your hand calculations? Please include a screenshot of your final results in the EPANET (i.e., showing flows and pressures) model to accompany your discussion. Submit the EPANET model as part of your .zip folder. Part C: Assume the total demand at node E is now 0.6 cfs and that the required minimum nodal pressure is 75 psi. Use EPANET to redesign the system by changing the diameter of one pipe and provide a brief justification for your choice. Note: only replace one pipe at a time. Do not replace multiple segments. Please include a screenshot of your final results in the EPANET (i.e., showing flows and pressures) model to accompany your discussion. Submit the EPANET model as part of your .zip folder. 1000 ft 12 in Water Users C Industrial Commercial Commercial Residential Residential Residential Commercial Fire flow demand 1250 ft 12 in. 1000 ft 8 in 1050 ft 8 in. 1100 ft 8 in. Figure 2: Diagram of the water distribution network, including the lengths and diameters of the pipes. 12 in. 1250 ft Table 1: Water demands for nodes in the water distribution network. 6.77 acres 2.90 acres 2.90 acres E 12 in. 600 ft 120 persons 502 persons 598 persons 3.30 acres Area or population Max. daily unit served consumption 21,000 gal/acre/day 45,000 gal/acre/day 45,000 gal/acre/day 270 gal/person/day 270 gal/person/day 270 gal/person/day 45,000 gal/acre/day 0.94 cfs Connecting Node B E E D D F DSee Answer
Q1: Identify ONE sustainability issue in a Southeast Asia country that affects Singapore. Explain the challenges the issue poses and the responses by the country has thus far. Guiding points: a. Does this current issue affect the future needs of Singapore negatively? How is this sustainability issue related to climate change? b. Choose one of these ASEAN countries: Brunei, Cambodia, Indonesia, Philippines, Laos, Myanmar, Malaysia, Thailand, or Vietnam c. How does this sustainability issue create challenges that affect Singapore? So far, how has this country. responded to its own sustainability issue within its country and/or in Southeast Asia?See Answer
