Mechanical Engineering question and answers for July 07, 2023
- Q i) Discuss the national plans and policies of ASEAN memberstates relevant to the growth of Renewable Energy towards regionalsustainable development. How would Malaysia play a role inachieving this? You are...
- Q What historical \"first\" in spaceflight shocked the world onOctober 4, 1957, triggering the beginning of the space age andmotivating the formation of NASA the following year?
- Q A centrifugal pump is driven at 1300 rpm by a 10 hp motor anddelivers 250 GPM at 85 Fahrenheit water against 75 ft water head,assuming that the initial pump efficiency...
- Q 2. The emissive power varies with wavelength, the total spectralblackbody power does not. A. True B. False
- Q 4. When does a surface have its total hemispherical emissivityequal to its total hemispherical absorptivity for radiation comingfrom a blackbody?A. When the surface temperature is equal to the temperature ofthe...
- Q A wind turbine with cut-in velocity of 8m/s andcut-out velocity of 30 m/s is installed at asite with Weibull shape factor 2.4 and scale factor of 9.8 m/s. forhow many...
- Q what are the obstacles that might inhibit the collection andevaluation of Agile process metrics and production analysismatrices?
- Q What composition of lead-tin solder is the best choice forjoining electronic components?Why is this composition chosen?explain
- Q hydrofracking involves impregnating the shale withwater (which contains some additives) at high pressure which openscracks in the shale. explain why, to a natural gas company,hydrofracking might seem more feasible than...
- Q The creep rate of a viscoelastic material is measured under aload P at 25 °C and 100 °C, respectively. What material propertycauses the strain rate measured at 100 °C to...
- Q True False Question1 Pneumatic energy is the power created by the release of waterfrom a pond.2 AD- Anaerobic Digester is the conversion of biodegradablewaste matter intocompost in the absence of...
- Q how can I mount a 3\" wheel on a motor with a 52mm dcmotor
- Q snowboards are typically made out of a thermosettingpolymer (i.e. a three dimensionally connected glassy polymer). whattype of mechanical behavior would you expect from that type ofpolymer and why do you...
- Q The acceleration of a rocket traveling upward is given by a = (8+ 0.02s) m/s2, where s is in meters.(Figure 1). Initially, v = 0and s = 0 when t...
- Q Write a brief description of Hindrance to Oil and Gas Flow inPipelines
- Q 1. A square-based pyramid has the volume V. If the verticalheight is H (the normal distance from the square base to thepoint), write a MATLAB function that:has V and H...
- Q what are the benefits of four wheel steering system
- Q what is storage tank stratification?
- Q If a customer orders 10 parts to be delivered next Tuesday, andwe deliver 8 parts on Tuesday, what is the on-time and completemetric for this customer?
- Q (a) What is the distinction betweenhypoeutectoid and hypereutectoid steels?(b) In a hypoeutectoid steel, both eutectoidand proeutectoid ferrite exist. Explain the difference betweenthem. What will be the carbon concentration in each?(c)...
- Q The position of a particle isr={(3t3−2t)i−(4t1/2+t)j+(3t2−2)k}m,where t is in seconds.Part ADetermine the magnitude of the particle's velocity whent = 0.5 s .Express your answer with the appropriate units.v=?Part BDetermine the...
- Q Consider the following plane stress state: σx = 30 kpsi, σy =-10 kpsi, τxy = 10 kpsi ccwCalculate the following:1. The coordinates of the center of the Mohr's circle C...
- Q The file CO2.txt, found on Blackboard with this assignment,contains 50 numbers, which represent the concentration ofatmospheric carbon dioxide (parts per million) recorded at MaunaLoa, HI. The data in the file...
- Q Determine whether the following statements are correct (y) ornot (n): and explain why..( ) A system have a higher second law efficiency than the firstlaw efficiency during a process( )...
- Q For H2O, determine the specific volume at the indicated state,in m3/kg.(a) T = 480°C, p = 20 MPa.(b) T = 160°C, p = 20 MPa.(c) T = 40°C, p =...
- Q Q1:Milling machines at a big company are usually down because ofsetups for an average of 15.8 percent of the time in three shifts.If machine downtime is costing the company 178.17...
- Q 2.3)Â Â Consider a 3-meter long pendulum placed on theMoon and given initial angular displacement of 0.2 rad and initialvelocity of 1 rad/s. Calculate the maximum angular velocity and themaximum angular acceleration...
- Q A gas mixture contains 5 kg of N2 and 10 kg ofO2. Determine (a) the average molar mass and (b) gasconstant. (c) What-if Scenario:What would theaverage molar mass be if...
- Q A Carnot heat engine has an ideal efficiency of 34% and produces25 kW of output power. At what rate (MJ/h) must it discharge heatwhen operating at full power?
- Q Identify and describe three automatic control systems in amodern automobile (besides criuse control)
- Q 1a. What is thermodynamics system?b. Briefly explain (i) control mass system(ii) control volume systemc. Comment briefly on control mass system and control volumesystem at Steadey stated.
- Q The inner and outer surface temperatures of a glass window 5 mmthick are 15 and 5°C. The thermal resist- ance of the glass windowdue to conduction is Rt,cond = 1.19...
- Q Problem 1: For a city at 42 deg N latitude, 93deg W longitude, determine the Local Civil Time (CT) for the sunseton May 21 for central standard time.
- Q When compressed liquid properties are unavailable for asubstance, it is acceptable to use the ____ values at the sametemperatureSelect one:a. saturated liquidb. saturated vapourc. criticald. triple line
- Q Your company has been awarded a contract for 5-story addition ontop of an existing 10-story hospital tower at a Cancer Centerlocated in one of the most populated areas of Dallas,...
- Q Which model, exponential failure rate or Weibull failure rate issuitable to capture the wearoutprocess of a pump bearing? (justify). Using MS Excel and simulateddata, estimate thereliability a pump bearing for...
- Q Select one major aspect of human physiology in the selectedreadings for this module that particularly interests you. Analyzeand evaluate it, then creatively apply it to aviation safety.Explain both how and...
- Q Fluid Mechanics
- Q When length the of crank and connecting rod is changed (i.ecrank of length is changed by keeping connecting rod lengthconstant and in other case connecting rod length is changed bykeeping...
- Q Consider the following boilerhazards:1- High steam pressure in the boiler exceeding design limits2- High steam temperature in the boiler3- Low water level in the boiler4- High water level in the...
- Q When you use a numerical method like the finite element method,you divide a large body into an equivalent system of smaller bodiescalled elements. This is done because using an analytical...
- Q why peak sun hours is used in estimation the size ofmany solar thermal and power systems ?explain
- Q Summarize how a pressure altimeter works todetermine and display aircraft altitude andexplain the meaningof the saying in aviation, “high to low, or hot to cold, look outbelow.†Give an example...
- Q A vessel initially containing 1 kmol of CO and 4.76 kmol of dryair forms an equilibrium mixture of CO2, CO,O2, and N2 at 2800 K, 1 atm. Determine theequilibrium composition.
- Q Transient heat transferLeaking steam completely fills a room, pushing out all of theair. The steam is at atmospheric pressure. Because the mortarcement siding walls are initially cool, at a uniform...
- Q Thermodynamics - waterP = 20 bar, T = 250 C, what is the specific volume? (choose theclosest answer)a)0.1085b)0.15c)0.1200d)0.1308T = 240 C, P = 2.5 bar, what is the specific internalenergy?.a)2713.1b)2714c)2717.2d)2720P...
- Q What Maximum Shear Stress tell you about the failure of material?
- Q Solve the following using expressions m & n. NOTactual numbersA HydroCarbon Fuel CmHn is burned atatmospheric pressure with stoichiometric amount of air as theoxidizer. Determine the EXPRESSION of air fuelratio,...
- Q The stream of Robotics and Artificial Intelligence (AI) hasbeen becoming an integral part in human life. Existing robotsreveals a vast diversity in structural shapes, materials fordeveloping variety of components and...
- Q Manufacturing Technology1. Glass(a) melting point(b) process in producing glass
- Q Air flows over a 4 meter long flat plate at a velocity of 8 m/s.Using a spreadsheet, calculate the boundary layer thickness andwall shear stress at 0.1 meter intervals along...
- Q Im designing a boat anchor winch that anchors a load of 1000 kginto the water when the boat is stationary with a wire line fromthe winch to the anchor, I...
- Q The flight test data for a given airplane refer to alevelâ€flight maximumâ€velocity run made at an altitude thatsimultaneously corresponded to a pressure altitude of 30,000ft anddensity altitude of 28,500ft. Calculate...
- Q As an experienced engineer, suggest two (2) alternatives toreduce the electrical usage and cost for air ducting unit . Thealternative suggested should comprise one (1) technicalmodification and one (1) human...
- Q The person’s mass, m= 68.1 kg, the unknown drag coefficient is,c , with units kg/s, and the local acceleration of gravity is g=9.80 m/s2 . Our model for the person’s...
- Q You are the head of the engineering department in a certaincompany. your department has been allocated an annual budget ofR2.6 million for this year. it is now towards the endof...
- Q Why is it that heat pumps are rarely used in the UK to heathomes? However in a remote             region there may be reason to use such a system. What type ofsystem...
- Q As a body is projected to a high altitude above the earthssurface, the variation of the acceleration of gravity with respectto altitude y must be taken into account. Neglecting airresistance,...
- Q What is the most frequently failed (engineering) product thatyou have observed in your life? Be specific about your failedproduct. If you are given a chance to redesign and chooseappropriate materials,...
- Q The top surface of a rectangular work part is machined in aperipheral milling operation. The work part is 735 mm long by 50 mmwide by 95 mm thick. The milling...
- Q 1)Consider water at 500 kPa and a specific volume of 0.2m3/kgm3/kg. What is the temperature (in °C)?2)Consider water at 500 kPa and a specific volume of 0.2m3/kgm3/kg. What is the...
- Q to build a robot capable of handling 150lbs.how do Ipick a motor considering all of the specs I see are for examplerpm=2500 volts=12 gear ratio = 10:14.I am new to...
- Q a) What are the disadvantages of using single coil springs formechanical seals? b) What are the main advantages associated withthe use of multi-coil springs?
- Q What is meant by:1. Hydrophilic?2. Hydrophobic?3. Surface wetting?4. Capillary action?Please type your answer, do not writeit.
- Q Ifacceleration moves in a straight line what happens to heattransfer?
- Q Manufacturing Technology1. Hot pressing forming (HPF)(i) what is that(ii) how its work
- Q Air enters the compressor at 100 kPa, 300 K and is compressed to1000 kPa. The temperature at the inlet to the first turbine stageis 1400 K. The expansion takes place...
- Q define total productive maintenance
- Q A vessel initially containing 1 kmol of CO and 4.76 kmol of dryair forms an equilibrium mixture of CO2, CO, O2, and N2 at 2800 K,1 atm. Determine the equilibrium...
- Q Howdoes automobile power steering work with servomechanism
- Q 1. What are the essential and desirable requirements ofmaterials for eyeglass?2. What are the essential and desirable requirements ofmaterials for a disposable water bottle that does minimalenvironmental harm?
- Q discuss in details scheduled discard tasks
- Q Explain the biggest challenge in maintaining a geothermal powerplant.
- Q Research the history of metals. Create a 15-20 slide powerpointpresentation.The slide should have key points and in depth discussion shouldbe in the notes section.
- Q A steam power plant has two turbines in series which togetherdevelop a power output of 25MW. The boiler supplies steam at 80bar, 500°C to the high-pressure turbine in which there...
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