Mechanical Engineering question and answers for July 02, 2023
- Q use matlab to create a function that finds inverse of 2x2 matrixand returns result. Should be a error check to make sure matrix is2x2, and nonsingular.
- Q What kind of defects could occur in:a. Extrusionb. Rolling
- Q Dispute the Kolmogorov scale in turbulence.Prove that Kolmogorov was wrong.
- Q 1 – What is the mechanism of UV aging of polymeric materials? 2– Why the mechanical properties of polymers varies with processingtechnique? 3 – How the dynamic friction of composite...
- Q create a function in matlab that sums two m x nmatrices using nested loops, then returns result into a new matrix.Use nesed for loops to add matrices piece by piece....
- Q Refrigerant 134a enters a well-insulated nozzle at 14 bar, 60°C,with avelocity of 37 m/s and exits at 1.2 bar with a velocity of 460 m/s.For steady-stateoperation, and neglecting potential energy...
- Q Â 1. If you suspect that the vehicle tends to oversteer in a corner, which sensors readings would you check to confirm your suspicions?2. While on a road course, the first...
- Q What are the steps in producing a concrete slab on grade?
- Q Answer the followinga)State any advantages or disadvantages you see in measuringvibrations with a strain gauge as opposed to the other methods wehave used. What effect would changes in temperature have...
- Q Concurrent Engineering is a work methodology based on theparallelization of tasks.Write a short essay (750 words or more) on ConcurrentEngineering as part of the product designing process. Your essayshould discuss...
- Q FLUID MECHANICSThe viscosity of water at 200C (680F) is1.008 cp (centipoises). (A) Compute the absolute viscosity inlb-sec/ft2 . (B) If the specific gravity at200C is 0.998, compute the kinematic viscosity...
- Q A list paragraph is preferable for engineers as it doesn’trequire paragraph features as much as text block paragraphs do.True or False
- Q Using this sample matlab code:clear all;clcA= ????????;B= ????????;AUG=[A B];for L=1:size(A,2)%Pivoting startsfor k=L:size(AUG,1)for m=k+1:size(AUG,1)if abs(AUG(k,L))<abs(AUG(m,L))temp=AUG(m,:);AUG(m,:)=?????????;AUG(k,:)=?????????;endendend%Pivoting ends%Gauss Elimination startsfor k=L+1:size(AUG,1)AUG(k,:)= ????????????????????????????;AA=AUG(:,1:size(A,2))BB=AUG(:,size(A,2)+1:end)end%Gauss Elimination endsendb)Write a MATLAB M-file which performs gauss elimination withoutpivoting step...
- Q List 4 issues that need to be considered when selecting a factorof safety in anengineering design.2-What is the difference between yield strength and ultimatetensile strength of a material?
- Q Atmospheric air enters the heated section of a circular tube ata flow rate of .005 kg/s and a temperature of 20 degrees Celsius.The tube is of diameter D = 50...
- Q 1. Figure 21.4 provides suggested cutting speeds and feeds forturn- ing. You are cutting a wrought carbon steel (1012) atnormalized to 100 Bhn and have have selected a high speed...
- Q 1.a)Which of the seven basic chip formation processes are singlepoint and which are multiple point?b)Why is metal cutting shear strain such an importantparameter?c)Why does the cutting force Fc increase with...
- Q Referring to the manual manufacturing method information givenin reviewquestion 12, calculate the total annual cost to produce100,000 parts per year. Note that theannual cost of maintenance forthe machine is $16,000....
- Q The acceleration of certain objects is studied in anexperimental test track for automobiles. The distance traveled byan object L is measured as a function of time t to yield thefollowing:t...
- Q The diffusion coefficients for carbon in nickel are given at twotemperatures are as follows:At T= 600°C, D=5.5 × 10–14 m2/sAt T= 700°C, D=3.9 × 10–13 m2/s(a) Determine the values of...
- Q A 10 ft long double pipe heat exchanger consisting of a 1 in sch40 (1.315 in OD, 1.029 in ID) inner pipe within a 4 in sch 40(3.998 in ID)...
- Q Discuss the different types of pool boiling phenomena.Describe the different behavior regions associated withpool-boiling in terms of excess temperature.Describe the differences, if any, between burn-out point andLeidenfrost point for pool...
- Q A) What are cryogenic materials? Show how ductile tobrittle transition zone takes place.Determine its applicability.B) Distinguish between thermosetting and thermoplasticspolymers.C) Discuss the nitriding process.
- Q How are Nerf N-Strike Elite Dart's made? What manufacturingprocess is done? Â
- Q The following questions are simplyapplications of Bernoulli’s principle. (Give complete sentences asAnswers.)Why is the draft in a fireplace better on a windy day?What keeps a Frisbee in flight?Why does your...
- Q Explain flow separation and why it causes increase or decreasein drag
- Q Write an executive summary onErnst-Merchant Chip Formation theory and itspractical applications in machining industries.(Hints: draw the free-body diagram and the forcecircle at the cutting edge, label all important parameters, explainthe...
- Q A 1.5-in-diameter bar has been machined from an AISI 1050cold-drawn bar. This part is to withstand a fluctuating tensileload varying from 0 to 62 kip. Because of the ends, and...
- Q Completely and thoroughly explain how Facilities Design could beused to design a new facility for a company that makes clothing.Discuss the issues of raw material deliveries at the receivingdock, unloading...
- Q Completely and thoroughly explain how Total Product Costs wouldbe calculated to determine the total cost to make anelectric coffee maker for a company that makes a varietyof small home appliances....
- Q Completely and thoroughly explain how the concepts ofEngineering Economy could be used to help a company that makespaper products make a decision on whether or not they should investin new...
- Q General Instructions Upload Matlab files forAssignment 8 to the appropriate link on Blackboard. Upload finalMatlab files (YourINITIALSfilename.m), separately. Print programflowcharts, listings (a copy of the Matlab code) and requestedsample runs,...
- Q Air enters the compressor of an ideal air-standard Brayton cycleat 100 kPa, 300 K, with a volumetric flow rate of 5 m3/s. Theturbine inlet temperature is 1800 K. For a...
- Q Problem 1:Carry out the first three iterations of the solution of thefollowing set of equations using the Gauss Seidel iterativemethod.Provide the solution using a program, you are free to useany...
- Q What material changes could advance the itemleading?(for example, to improvements in sustainability,accessibility, affordability, equity, performance,etc..)Use materials property data and knowledge of materialsselection strategies to support your proposed materialinnovation.(Can you please...
- Q What negative effects have resulted from the materialchanges? Consider the full material life cycle.Would it actually be more sustainable from anenvironmental, economic, and/or social perspective to return tomaterials that were...
- Q As a lab instructor in machining, you are required toprepare a lab module for alaboratory session with your students. In this session, thestudents are required toproduce aT-Slot. Prepare the methodology...
- Q Identify 5 benefits of using a Database management systems
- Q During a drilling process, excessive drill wear anddrill breakage may occur. Asan experienced machinist, you are required to investigate theprobable causeswhich lead to these problems and suggest on how to...
- Q You have just started work at an aircraft engineering companyand have been tasked with a complex engine change on theaircraft.What kind on negative reactions could this cause in you? Andwhat...
- Q Water is forced through a contraction causing low pressure.The water is observed to boil at a pressure -80kPa(gage). Ifatmosphere pressure is 100kPa, what is the temperature of thewater?
- Q Explain different types of car suspension systems.
- Q While designing a reactor for a highly exothermic reacton, how canI figure out whether I use a jacket around the reactor or coils tocool it down ?Is there any mathematical...
- Q what is the difference between analytical solution andFEA??
- Q The total cycle time of an automated fiber placement (AFP)operation (sheet lamination), used to manufacture a section of theairplane fuselage, is 8 hours and 40 minutes. The setup time beforethe...
- Q Air enters a horizontal, constant-diameter heating ductoperating at steady state at 280 K, 1 bar, with a volumetric flowrate of 0.25 m3/s, and exits at 325 K, 0.95 bar. Theflow...
- Q y'=y-x^2 ; y(1)=-4My MATLAB programwon't work. I am trying to get the main program to output a plot ofthe three equations (1 from the main program and two called in...
- Q from QFD, what factor use to determine most important designspecification?Is it the absolute weight or relative weight? How can I list theorder of importance of the design specification using data...
- Q Waht is the application of flixibe manufacturingsystem (FMS)??
- Q A piston–cylinder device contains 0.85 kg of refrigerant-134a at-10°C. The piston that is free to move has a mass of 12 kg and adiameter of 25 cm. The local atmospheric...
- Q Engineering Thermodynamic,Thermal energy effect, poisonous gases effect, load aspectdissipation effect on consumption and generation, etcTotal words-500
- Q 1- What is the purpose of alloying a metal?2- What amounts of carbon are contained in low, medium, and highcarbon steel?3- Describe what “PH†and “17-7†means in PH17-7.4- What...
- Q 11- In general, how does adding carbon affect iron and carbonsteel properties? (name 3 properties and how the property changesfrom the additional carbon)12- Describe galvanic corrosion.13- What is a heat...
- Q True-False1. The main disadvantage of belts/chains compared to gears isthat belts/chains are more likely to transmit noise, shock, andimpact than gears are. T/F.2. A large pulley rotates CCW, meshes with...
- Q Provide an example of steel which has been coated forprotection. Explain the coating, fabrication and good and badpoints of the coating selection. Â
- Q A power train application requires the coupling of a spur gearto a transmission shaft operating at 3600RPM. The coupling mustsustain a mean torque loading of 215Nm. There is a 20%...
- Q What is a water pump? Why is it important? Give an example withdetails where a water pump is used: How is it used and how does ithelp the system?
- Q Given a wall that is 36 feet long and 8 feet high calculate theheat loss per hour when the inside temperature is 70 degrees insideand 10 degrees outside.The wall assembly...
- Q Describe the vertical, choker and basket type sling hitches andtheir effect on working load limits?
- Q Matlab assignment.The objectives of this project are (1) to introduce the studentsto scripting applied to solution of mechanical engineering problemsand (2) to create a Matlab script that allows the computation...
- Q Write the steps about the procedure of finding casting defects indeatils at least five steps?Typed only!
- Q What safety precautions we need to take in the Powder Metallurgylab? Please specify and explain
- Q Fluid Mechanics:The speed of shallow water waves in the ocean (e.g., seismic seawaves or tsunamis) depends only on the still water depthand the acceleration due to gravity. Derive an expression...
- Q Topic: DCSWhat is the difference between DCS Network CommunicationProtocol and Field CommunicationProtocol?
- Q Find out about the nominal cruise altitudes of any threeaircraft types (you can also give a range of values, and cite thereferences). When you do the flight performance analyses at...
- Q when engineers disagree with their employees they mayengage in organizational disobedience. Describe three types oforganizational disobedience (by contrary action,bynonparticipation, by protest.)
- Q Determine the friction factor, f if water at 71 °C is flowing at9.1 m/s in 25.4 mm Schedule 40 steel pipe. Given, roughness, Æ =4.57 X 10-5 m.
- Q 1- Comment on the effects of changing the position of Gon the position ofmetacentre.2- Explain how unstable equilibrium might beachieved?(Fluid Subject)
- Q a)Using MIL STD 105E, find the sample size for inspection levelIII, normal inspection, AQL = 1.5%, and lot size of 1000. Determinethe sample size.b)For inspection level I, tightened inspection, AQL...
- Q Please discuss 4 major regions for phase change heattransfer
- Q Completely and thoroughly explain how a Predetermined TimeSystem, such as MTM or MOST, could be used to establish laborstandards for a company that makes clothing. Be specific in youranswer and...
- Q A cylinder with a 20 inch stroke and a 4:3 area ratio with abore of 6 inch diameter takes 4 seconds to extend. What is the flowrequired for extention?
- Q Answer the following questions:a) In a wall without heat generation, with temperatures T0 and T1,if the heat in T0 is adiabatic, what phenomena can occur at the endof the wall?b)...
- Q 1- What is the continuum assumption? Why do we make thisassumption in fluid mechanics?2-Describe Newtonian andnon- Newtonian fluids and giveexamples?3-Define Mach number, and describe compressible andincompressible flows?
- Q For an alloy that consists of 74.9 g copper, 108.0 g zinc, and7.3 g lead, what are the concentrations of (a) Cu, (b) Zn, and (c)Pb in weight percent? The...
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