Mechanical Engineering question and answers for July 11, 2023
- Q Air at a pressure of 1 atm and a temperature of 50°C is inparallel flow over the top surface of a flat plate that is heatedto a uniform temperature of...
- Q Why the material does not experience uniform elongation afternecking tensile test
- Q • Which one is more prone to fatigue fracture: ductile orbrittle materials? Why?
- Q Subject: Manufacturing processExplain the differences between Dislocations vs. CrystalDefects
- Q The floating caliper brake used in the front car wheel is shownin the following figures. The caliper supports a single floatingpiston actuated by hydraulic pressure. Two annular pads, ri=100 mm,ro=140mm,...
- Q Write an ESSAY on what you understand about:1. Anti- Ice and De-ice2. Type of Ice3. Type of ice accretion detectors4. Areas need for protections5. 4 principle of Anti-ice6. Rain protection.
- Q If the coordinate direction angles for F3 are ? = 120°,? = 60°, ? = 45°, determine the magnitude and coordinate direction angles of the resultant force acting on the eyebolt.
- Q A cable that is anchored at P (0,0,0) and passes through Q(2,8,5) supports a 100 lb weight as shown. Express the tension T inthe cable in Cartesian vectorform.         Â
- Q Write out the Navier Stokes equation in cartesian coordinatesfrom vector form, for (mass,momentum).
- Q A steam power plant operates with a maximum pressure of 3500psia and maximum temperature of 1050 oF. Assume a simpleRankine cycle, condenser pressure is 10 psia, and turbomachinery isisentropic.Turbine work...
- Q A helical compression spring is wound using 1 mm-diameter musicwire. The outside coil diameter of the spring is 11 mm. The endsare squared and there are 12 total turns.(a) Estimate...
- Q a.By considering a cylindrical pressure vessel subjected to aninternal pressure P, show in which one of the three primary stressorientations a crack-like defect would be most likely to causefailure when...
- Q Describe how aluminium can be tested for particular property.Appropriate for aircraft fuselageExplain if the method chosen for testing aluminium is nondestructive.If not, if a non destructive method for testing aluminium...
- Q Consider the linear time invariant system described by thetransfer function G(s) given below. Find the steady-state responseof this system for two cases: G(s) = X(s)/F(s) =(s+2)/(3(s^2)+6s+24) when the input is...
- Q Select the true answer1. Which of the following is an example of the subject matter ofa bribe?to throw out a speeding ticketto obtain a government constructionprojectto obtain a certain zoningdetermination...
- Q What type of pumps are used in hydraulic combinatonsystems?two-phase (two-step) or round pumps
- Q How material properties, such as glass transition temp,conductivity, and crystallinity, change with elevatingtemperatures! Meanwhile, corrosion is another pressing issue in ourdaily life. What are the origin and underlying mechanisms? WhyMetals...
- Q QUESTION 1Study a manufacturing company or environment of your choice.Report on the following:1.1 Products and processes (5)1.2 Product flow (5)1.3 Calculate the cycle time. (5)1.4 Identify equipment or technology, its...
- Q 4.1 Explain the classification of manufacturing systemsaccording to part or product variety, identifying specificexamples. (5)4.2 Study a multiple product manufacturing process of yourchoice. Required:4.2.1 Explain how the product is manufactured.4.2.2...
- Q Air at 60oC and 1 atm enters a smooth tube having a diameter of2 cm and length of 10 cm. The air velocity is 40 m/s: 1- Whatconstant heat flux...
- Q Explain why in welded components, residual compressive stressesare as detrimental as residual tensile stresses, but in unweldedcomponents residual compressive stresses are beneficial.
- Q 1. What are the Limits of the material beingprocessed in the Fused Deposition Modeling (FDM), apart from usingThermoplastic only?2. What are the Limits of the equipment beingused in the Fused...
- Q Liquid bismuth flows at a rate of 4.5 kg/s through a5.0-cm-diameter stainless-steel tube. The bismuth enters at 415oCand is heated to 440oC as it passes through the tube. If a...
- Q A new type of bird capable of self-propulsion is designed inorder to maximise its flying distance in the presence ofaerodynamic drag. This new bird, having the initial mass of mo,generates...
- Q Explain the characteristics of different jointsexplain briefly ,with neat sketch. thanks you
- Q 1. Explain the differences between fixed and random factors inDesign of Experiments (DoE).2. Explain the three pillars of DoE.3. What are the differences between replication andrepetition?4. In plastic injection molding,...
- Q The particulars of a 20 TR R 22 food freezer are as follows:Evaporator temperature – 30°CCondenser temperature 40°CTemperature of vapor leaving evaporator – 25°CSubcooling of liquid with vapor in heat...
- Q GD&TDiscuss following:1) Form deviations2) Flatness, straightness, and circularity tolerances3) How bonus tolreances affect part processing4) Correctly specifying form tolerances
- Q Consider the following cookie making process at a bakery store.1) Alice puts all the ingredients in a mixing bowl and mix them. 2)Bob spoons the cookie dough onto tray and...
- Q GD&Twhat is good practice when you are dimensioning drawing?Discuss followings: write 150 words minimum1) general symbols and abbreviations2) geometric tolerancing symbols3) feature control frams4) datum identification5) basic dimensions6) the 14...
- Q In 1908 Jenry Ford produced the first affordableautomobile using his assembly line method. At the time, theassembly line was a new and emerging technology and is now theessential element of...
- Q In engineering Design the first step is Identifying the problem. In detal can you please explain this step to me and give one example that the outcome was unsuccessful because...
- Q Composite engineeringIn a design assignment, you are asked to use continuous carbonfibres to reinforce an epoxy matrixto achieve Young's modulus of 250 GPa along the longitudinaldirection of the composite. Theepoxy...
- Q A rigid 10-L vessel initially contains a mixture of liquid waterand vapor at 100C with 12.3 percent quality. The mixture is thenheated until its temperature is 180C. Calculate the heat...
- Q With respect to mechanical strength considerations what is thefeasibility of joining extra hard temper brass parts by solderingat 250°C?Please make sure your hand writing is clear an include arefrence if...
- Q What pressure distribution? How does it relate to drag and liftcoefficients?
- Q Find the area of the region that ties inside the curve ?? = 2 +2 cos 2??, but outside the curve ?? = 2 + sin ??.
- Q A pump is used to circulate hot water in a home heating system.Water enters the well-insulated pump operating at steady state at arate of 0.42 gal/min. The inlet pressure and...
- Q Carbon monoxide gas (CO) contained within a piston– cylinderassembly undergoes three processes in series:Process 1–2: Expansion from p1 = 4.5 bar, V1= 0.8 m3 to V2 = 1.4 m3, duringwhich...
- Q A car needs to be towed and is attached to the tow vehicle by a3.5m long 18mm diameter nylon rope. The tow vehicle is moving5km/hr and takes up the slack...
- Q Air flows through a constant area duct. The pressure andtemperature of the air at the inlet to the duct are P1 = 100 kPaabsolute, and T1 = 298 K, respectively....
- Q Air flows in a pipe with a diameter, D=50 mm. The inletconditions are: M1 = 3; total pressure,P01 = 1000 kPa absolute; and temperature, T1 = 550 K. The frictioncoefficient...
- Q 1-How conduction is occurred in gases and liquids?
- Q dimensioning and toleransing symbologydiscuss following: write 150 words minimum1) the development of dimensional control2) design through teamwork3) professions and trades affected by dimensions4) required dimensioning skills5) orthographic projection6) future trends****...
- Q An object of irregular shape has a characteristic length of 1 mand is maintained at a uniform surface temperature of 450 K. Whenplaced in atmospheric air at a temperature of...
- Q Use MATLAB to determine the intersection point for the sets of equations shown below. Use the backslash when possible.Graph the equations with different colors, and plot the intersection point with...
- Q What are the other components that can improve the COP. Draw theP-h diagram to explain the process.
- Q What is the principle operation of the evaporator?
- Q Alloy element content has an effect on the ductile-to-brittletransition temperature of a steel. How does increasing the Mncontent of a steel affect the transition temperature?
- Q How do the condensers reject heat?
- Q Considering the nature of the Charpy impact test can the impactenergy values obtained from it be used directly in mechanicaldesign? Explain your answer. ?
- Q [Aerospace Engineering]1. Aerodynamics :(a) how to find zero lift line of a wing and airfoil?(b) how do we relate this with climb angle(gamma), pitch angle(theta), angle of incidence, and Angle...
- Q A boiler produces steam at a saturated temperature of 300C andat dryness of 92% from feedwater at 110C The boiler evaporatingrate is 70 kg min. What is boiler heat rate...
- Q For a brass alloy, the tensile strength is 400 MPa, the yieldstrength is 315 MPa and the modulus of elasticity is 100 GPa.(a) What is the maximum load that may...
- Q Consider a pipe (diameter of 50 mm) with air flowing through it.The inlet conditions are: Mach 3; total pressure = 1000 kPa and 550K. The friction coefficient (f) is 0.004....
- Q what happens to cutting force as the following increase: a.Rakeangle b.Material shear strength c.Depth of cut Are your findings asexpected based on the theory of machining? Why or why not?
- Q How much energy does it require to keep the ice steadyat -8 degrees celsius continuously?We have an ice rink and these are thevalues:- indoor climate has a constant temperature of...
- Q Name three professions related to kinesiology and explain howeach will benefit from a knowledge of biomechanics.
- Q Which of the following is least likely to decrease the thermalcontact resistance between two media in contact?Make a vacuum gap at the interfaceApply thermal grease onto the interfaceSand the contact...
- Q What are uniform pressure and uniform wear theories? Deduceexpressions for the friction torque considering both the theoriesfor a flat collar.
- Q Create and complete a function M-file that will receive aninput, ? , and output the corresponding conversion to radianswithin the range of a complete circle. For each 30? increment, theoutput...
- Q Inapplying bernoulli’s equation, derive an equation for the pressureat the inlet of the nozzle below to produce a flowrate ofQ=0.70ft^3/s. If the nozzle doscharges to atmosphere at point 2.Take diameters...
- Q A greenhouse (30’x20’x10’) in Yuma, Arizona needs to be cooledfrom an outside temperature of 110oF to an indoor 75oF. The RHoutside is 4% and the greenhouse requires 5 air changes...
- Q How does interphase precipitation work for alloy hardening?Name two characterisation techniques that could be used to imageinterphase precipitation.
- Q Which one of the following statements are correct?In a counter-flow heat exchanger, the exit temperature of thecold fluid can never reach the exit temperature of the hotfluid.In a parallel flow...
- Q Explain why photoinitiators are needed in most commercial VPresins. Explain what these photoinitiators do. Please summarize theanswer
- Q Explain with schematics the two-photon polymerizationtechnique.What is its advantage over stereolithography.
- Q Create cause-and-effect diagrams for a long line at thesupermarket.
- Q Steam turbine power plant practical report
- Q A rocket is fired from rest at x=0 and travels along aparabolic trajectory described byy2=[120(10^3)x]m.Part AIf the x component of acceleration isax=(1/4t^2)m/s^2, where t is inseconds, determine the magnitude of...
- Q this is my matlab code for class, my professor commented \"why isthe eps an input when it is set inside the function and notspecified as a variable?how do i fix?function[]...
- Q A phone housing case is to be manufactured from Polyester Based- Thermoplastic Polyurethanes (TPU) with the manufacturing processof Injection Moulding**Problem** :a. Describe how TIME is involved in each stage if...
- Q Â Â A phone housing case is to be manufactured from Polyester Based- Thermoplastic Polyurethanes (TPU) with the manufacturing processof Injection Moulding**Problem** :a. Describe how PRESSURE is involved in each stage of...
- Q A phone housing case is to be manufactured from Polyester Based- Thermoplastic Polyurethanes (TPU) with the manufacturing processof Injection Moulding**Problem** :a. Describe how temperature is involved in each stage of...
- Q Within a large catering organization many slices of bread mustbe buttered. This is a tedious and time consuming task. You arerequired to design an automatic process of applying the butter...
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