Mechanical Engineering question and answers for August 01, 2023
- Q Use MATLAB DSOLVE to solve the folloing ODE and plot it:300x'' + 60x' + 6840 = f(t)
- Q Write a MATLAB function that uses my_sine(x,n) to plot theapproximation of the sinefunction from−3π/2 to 3π/2 with incrementsequal to Δx,where Δx and n(the number ofterms used in the seriesapproximation) should...
- Q What is diametral pitch, and why is it an important parameter ina gear mesh?
- Q For the factors / conditions listed, select those that tend toalleviate creep deformation for a metal sample with a randompolycrystalline microstructure.a. Raise the service temperature that the part is exposedto.b....
- Q Solution for problem one (P1) below:ME 311 Thermodynamics I 1 Homework 5 Problem from Cengel andBoles 8th EditionP1) Carbon dioxide flows steadily in a pipe at 3000 kPa, 31 °C,and...
- Q Liquid mercury at 0.5 kg/s is to be heated from 300 to400 K by passing it through a 50-mm-diameter tubewhose surface is maintained at 450 K. Calculate therequired tube length...
- Q Â (A) Derive Bernoulli's Equation from Pressure, Kinetic Energy and Potential Energy(B) Express Bernoulli's equation:- Per unit mass-Per unit volume- In terms of headsÂ
- Q I need a full article on leadership and mechanicalengineering two full pages
- Q some examples of people who have a greatleadership?
- Q Imagine a diverging channel in place of the jet engine. Airenters the channel supersonically and accelerates further in thediverging geometry. The exit velocity is an even faster jet whichwould provide...
- Q An adiabatic mixing chamber with operating pressure of 180 kPais used to mix cold water and hot water. The hot water enters at80°C with mass flow rate of 4.1 kg/s....
- Q Concept 1: Does turbulent flow or laminar flow have a greaterheat transfer coefficient? Why?Concept 2: For flow over a flat plate, why does the heattransfer coefficient decrease the greater the...
- Q Explain why adding Ti or Si can raise the eutectoid temperatureof steels? What is the impact of having higher eutectoidtemperature on using heat treatment to obtain Bainite? Use the CTor...
- Q A rectangular rosette is mounted on a steel plate having amodulus f elasticity E=200GN/m2 and Poission’s ratio =0.3. Thestrains measured are ε1=500×10-6; ε2=400×10-6; ε3= -100×10-6.Develop a MATLAB code to compute...
- Q Post a one-page essay sharing your position on the followingvideo clip:Professor' Kaku's talk on The Future of Technology(https://www.youtube.com/watch?v=59Ejxp1tRss)
- Q 1.Can i use this material for making wheel(rim) for water hosecart? 2.Which kind of procuction made of this material? 3.What ismanifacturing method of produce of them?*polytrimethyleneterephthalate(PTT) *PBT * PC+PBT
- Q An air engine is modeled after the ott cycle. Assume ideal gasand air standard cold valus for properties. Intake air is at 100kPaand Temperature of 27°C. The compression ration is...
- Q Write theory, real life application and recommendations forKinematic of linear motion lab?
- Q Make a list of the alloying elements used inhigh-speed steels. Explain what their functions are and why theyare so effective in cutting tools.Please answer me in computer-typing format. Thanks!
- Q true and false questionsa. Any force F acting on a rigid body can be moved to anarbitrary point O provided that a couple is added whose moment isequal to the...
- Q circle most appropiate choice1a. Which of the following forces is NOT a conservativeforce?a. friction forceb. spring forcec. gravitational forced. none of the above1b. In which circumstance is the force of...
- Q Ifyou were making pots and pans for the kitchen, what processes wouldyou use and why.
- Q A case study on 'Computational challenges on Elasticity basedproblems'. (Problems with closed form solution would bepreferable).This topic pertains to Advanced mechanics of material.
- Q I Need the solution of Elasticity Equations for RectangularPlate Subjected to Bidirectional Sinusoidal load. (A closed formsolution would be prefarable).Assume neccesary conditions whereverrequired.This question pertains to Advanced mechanics of materials.
- Q How would you measure the hardness of:a) unmovable part of a large machine which is very heavy totransport?b) an unknown alloy?
- Q Write Real Life application for Hydraulic Pressure Control Valveusing sequence valve in about 300 words?
- Q 2 7/8-in., 8.6-lbm/ft tubing, how do we get the inner diamiterfrom this data? the correct answer is (2.259â€) but I don't know howto get it
- Q  12.  Which component of a vapor-compression refrigeration machine provides for the cooling effect in the conditioned space?16.  Why would one choose a fire tube boiler instead of a water tube boiler?17.  How does...
- Q Consider laminar steady boundary layer at a flat plate. Assumethe velocity profile in the boundary layer as parabolic, u(y)=U(2(y/δ)-(y/δ)^2).1. Calculate the thickness of the boundary layer, δ(x), as afunction of...
- Q The Equation of motion for the standard mass-spring-dampersystem isMẠ+ Bẋ + Kx = f(t).Given the parameters {M = 2kg, B = 67.882 N-s/m, K = 400 N/m},determine the free...
- Q The Equation of motion for the standard mass-spring-dampersystem isMẠ+ Bẋ + Kx = f(t).Given the parameters {M = 2kg, B = 67.882 N-s/m, K = 400 N/m},determine the free...
- Q The Equation of motion for the standard mass-spring-dampersystem isMẠ+ Bẋ + Kx = f(t).Given the parameters {M = 2kg, B = 67.882 N-s/m, K = 400 N/m},determine the free...
- Q A six-station rotary indexing machine performs the machiningoperations shown in the table below, with processing times andbreakdown frequencies for each station. Transfer time is 0.15 min.A study of the system...
- Q (A) Give industry and household examples from your experience ofdevices that simplify installation and attachment, and thateliminate trial-and-error adjustment.(B) Give examples from your experience of situations wheretrial-and-error adjustment could be...
- Q A mass of 3 kg of saturated liquid-vapor mixture of water iscontained in a piston-cylinder device at 175 kPa. Initially, 2 kgof the water is in the liquid phase and...
- Q A mass of 3 kg of saturated liquid-vapor mixture of water iscontained in a piston-cylinder device at 175 kPa. Initially, 2 kgof the water is in the liquid phase and...
- Q ASSIGNMENT 1TOPIC: INTRODUCTION OF FLUID MECHANICSGROUP MEMBERSNameMatrix NumberQUESTION 1: 10 MARKSIn your own words, explain what have you learnt from fluidmechanics course.NAMEINDIVIDUAL REFLECTIONQUESTION 2: 40 MARKSRefined crude oil has been...
- Q Determine the changes in length, breadth, and thickess of asteel bar which is 5m long, 40mm wide and 30mm thick and issubjected to an axial pull of 35kN in the...
- Q At 130°C, a bronze hoop 20 mm thick whose inside diameter is600 mm just fits snugly over a steel hoop 15 mm thick. Both hoopsare 100 mm wide. Compute the...
- Q In a manufacturing process, stainless steel cylinders (AISI 304)initially at 600K are quenched by submersion in an oil bathmaintained at 300K with h=500W/m2-K. Each cylinder is oflength 2L=60 mm and...
- Q A large block having the properties of a chrome brick at200oC is at uniform temperature of 30oC whenit is suddenly exposed to a constant surface flux of3x104 W/m2. For this...
- Q An air compressor rapidly fills a 0.3m3 tank (there is no heattransfer through the tank walls), initially containing air at 27?C, 1 atm, with air drawn from the atmosphere at...
- Q An air compressor rapidly fills a 0.3m3 tank (there is no heattransfer through the tank walls), initially containing air at 27?C, 1 atm, with air drawn from the atmosphere at...
- Q Water at p1 = 20 bar, T1= 400oC enters a turbine operating at steady state andexits at p2 = 1.5 bar, T2 =220oC. The water mass flow rate is 4000...
- Q Draw the electrical circuit diagram of electromagnetic forming,label it neatly and explain how a thin cylinder can be expanded orcompressed by this process.
- Q A solid cylinder of 6 inch diameter and 4 inch high iscompressed axisymmetrically to 2 inch high.a) Calculate the final diameter of the product, the threeorthogonal strains and the Von...
- Q What is the percentage change in the R-value of the window ifdouble glazed window is used with 6.4 mm and 12.7 mmair in between as compared to singleglazed window? Does...
- Q 1a. Write the three-dimensional state of uniform stress in adeformable medium1b.. Show from table below that total true stain is equalto the sum of the incremental true strains. Consider a...
- Q Which is the most efficient? A parallel hydrogen fuel cell orone connected in series? Can you explain your reasoning to youranswer?
- Q Describe the mathematical models of the boundary value problemto evaluate the elastic deflection of the beam based onEuler-Bernoulli and Timoshenko theories with finite differencediscretisation (for numerical integration and differentiation)
- Q A 40 wt% Pb–60 wt% Mg alloy is heated to a temperature withinthe a liquid-phase region. If the mass fraction of each phase is0.5,then estimate(a) the temperature of the alloy(b)...
- Q A 40 wt% Pb–60 wt% Mg alloy is heated to a temperature withinthe a liquid-phase region. If the mass fraction of each phase is0.5,then estimate(a) the temperature of the alloy(b)...
- Q What is chill in casting ? How it usedand what are the differenttypes ?
- Q Predicted system curves and measured system curves don’t alwaysmatch. Manufacturer provided pump curves and measured pump curvescan also differ. What are some reasons why?
- Q What is the effect of time and temperatuure on the mechanicalproperties of polymers (in regards to polymer chains)?
- Q To what temperature would you need to heat the carbon steelrivets to ensure the plates developed sufficient compressive forceto transmit the load in shear. The force the joint is required...
- Q Which of the following is not the charecterstic of Pallet loadsplaced on racks in multi-rackStructure: Select one: a. Goodaccessibility b. Low cost c. None of these d. Good strogedensity
- Q Write the theory of hydraulic pressure control valve using sequencevalce in 350 words?
- Q Consider a 1.5m long 30cm wide flat plate exposed to two laminarflows of air (6 m/s free stream top surface and 12m/s free streambottom surface) at 25ºC and atmospheric pressure....
- Q Â Research and write a recommendation report that compares two or more things. Address a topic or issue of your major field of study.Â
- Q An FCC crystal is pulled in tension along the [100] direction.(a) Determine the Schmid factor for all slip systems. (b) Identifythe slip system(s) that would be activated first. (c) What...
- Q In a slowly cooled hypereutectoid iron-carbon steel,the pearlite colonies are normally separated from eachother by a more or less continuous boundary layer ofcementite. Explain how this microstructure develops. Usesimple sketches...
- Q In slowly cooled hypoeutectoid steels one normally finds amicrostructure in which the pearlite colonies are surrounded byferrite grains. Explain.
- Q Problem 7.56A three-point bending test was performed on an aluminum oxidespecimen having a circular cross section of radius 4.7 mm; thespecimen fractured at a load of 3740 N when the...
- Q Article on leadership and related to mechanical engineering.
- Q The rate of emission of SO2 from the stack of a powerplant is 150 gm/sec. The stack height is 50 m. Calculate theeffective plume height on a sunny September day...
- Q I need to Elaborate a thermodynamic analysis of energy andefficiency of traditional and Perovskite solarcells. Can I get Help with this?
- Q Calculate the maximum mass flow possible through a frictionless,heat-insulated, convergent nozzle if the entry or stagnationconditions are 5 bar and 15°C and the throat area is 6.5 cm2. Alsocalculate the...
- Q Air at 5 bar and 560K is expanded in steady flow in a horizontalconvergent–divergent duct to an exit velocityof 640 ms−1. The walls of the duct are heated so as...
- Q Which type of motor is hydraulically balanced so asnot to have buckling forces on the drive shaft.(A) Gear(B) Palettes(C) PistonsAnd Why?The pressure compensator in which type of hydraulicpiston motor is...
- Q Which type of motor is hydraulically balanced so asnot to have buckling forces on the drive shaft.(A) Gear(B) Palettes(C) PistonsAnd Why?The pressure compensator in which type of hydraulicpiston motor is...
- Q The composite walls of a building are made up of threematerials. The inside layer of the walls is 1-cm thick wall board(kwb = 0.2 W/mK). The middle layer is 10...
- Q There are proposals to store energy in flywheels for loadleveling in utility systems.During the off-peak period for energy demand at night, theseflywheels are chargedto high speeds. At peak periods during...
- Q Draw a diagram of a typical BDP flame above an AP/HTPB compositepropellant. Label each flame, and include the position of the APand HTPB in the condensed phase.
- Q For the given set of strand burner data (given also as a .txtfor easy excel import):Calculate the parameters, a and n, of St. Robert’s Law for eachT0. Plot the results...
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