Mechanical Engineering question and answers for July 17, 2023
- Q Â CASE STUDYIn the Appliances Manufacturing Plant, a large number of engineering activities are carried out in a wide range of areas. These activities include design, production of parts, assembly, testing,...
- Q A water-to-water system is used to test the effects of changingtube length, baffle spacing, tube pitch, pitch layout, and tubediameter. Cold water at 25°C and 100,000 kg/hr is heated by...
- Q This is problem 5-17 from El-Wakil’s Powerplant Technology book-- consider a simple combination turbine with one Delaval impulsestage and one 60 percent reaction stage. The nozzle of impulsestage receives steam...
- Q Prove that any planar F-dof (degree of freedom) linkage(contains lower pairs only) must have at least F+3 binarylinks.
- Q This is problem 5-13 from El-Wakil’s Powerplant Technology book-- a 50 percent reaction stage in a steam turbine undergoes a totalof 20 Btu/lbm enthalpy drop. The nozzle efficiency andangle are...
- Q 5. A power cycle receives energy QH by heat transfer from a hightemperature energy source at TH = 2000 K and rejects energy QL byheat transfer to a low temperature...
- Q Air at 1 atm and 27 degree C flows across a flat plate at avelocity of 14 m/s. Find the distance from the leading edge wheretransition to turbulent flow begins...
- Q A piston?cylinder device initially contains 1.5?kg saturatedliquid water at 120°C. Now heat is transferred to the water untilthe volume increases 100 times.Determine:a. Initial Volume of the water.b. Final volume of...
- Q What are the largest and smallest turbulent length scales in anunstratified open drain of depth 1 m that is flowing at velocityU=10 cm s-1 ? Assume q=0.1U. Is the flow...
- Q Discussion: Design Feasibility Studies and Alternatives intestbed-Load can break bearing: dynamic and static load- bearing life expectancy of bearing- how the measurment of part and equiqment help you to determineforce...
- Q Aircraft Structural Engineering \"consider you are designing theaircraft, how you will specify the bulkhead distances in aircraftfuselage?\" i want the procedure of the calculations for this. ORgive me some proper...
- Q Plot schematic stress strain diagram for composite material.Show each stage in the graph and explain them.
- Q Illustrate how ferromagnetic and paramagnetic material behavesunder external field and after removal of external field.
- Q Derive Green’s Theorem from Sturm-Liouville Eigen Value problem.When do you need Green’s theorem in the context of a Heat orDiffusion Equation?
- Q Assume you are making a compisite material airplane, which hasligter weight and more fuel effciency. Describe how your airplanewill put pressure on a culture outside of America (Choose aspecific country)....
- Q Assume you are making an airplane to meet an application. Forexample, air dropping of supplies and carrying of small packages.Describe how your airplane will put pressure on a culture outsideof...
- Q Assume you are making an airplane to meet an application. Forexample, air dropping of supplies and carrying of small packages.Describe how your airplane will put pressure on a culture outsideof...
- Q What hydraulic fluid viscosity and temperature was used inpreparing the performance data shown on this information sheet?Give specific examples of what changes would occur in the data ifthe viscosity and/or...
- Q Hot water is transported from building A to building B through a500-m-long, 2-inches steel-pipeline. The hot water is heated up to90oC by an electric hot water boiler located in building...
- Q A mass of 5 kg of saturated water vapor at 150 kPa is heated atconstant pressure until the temperature reaches 200°C, the theboundary work in KJ is done by the...
- Q If an engineer believes that a section of pipe is fullydeveloped what are they claiming in terms ofa) fluid velocity?b) fluid forces?
- Q which one is more prone to fatigue: ductile or brittlematerials? why?
- Q A system that dispenses fluid into a bottle currently uses asolenoid operated valve. This has the effect of a sudden opening ofthe valve and a sudden closing. The valve is...
- Q 1-Why the material does not experience uniform elongation afternecking tensile test?2-Why the sprue is not designed straight / show your reasoningby using some formula?
- Q A rod of diameter D = 25 mm and thermal conductivity of 60 W/m·Kprotrudes from a furnace with a wall temperature of 200ºC. The rodis welded to the furnace wall...
- Q A component (pearlitic) is very weak. Describe a procedure ofstrengthening it.
- Q Consider 4.0 pounds per minute of water vapor at 100lbf/in2, 500oF, and a velocity of100 ft/s entering a nozzle operating at steady state and expandingadiabatically to the exit, where the...
- Q Air of 0.5 kg mass is compressed in a piston-cylinder devicefrom 300 K, 120 kPa to 500K, 940 kPa. (a) Determine the entropychange in kJ/K using (i) approximate analysis and...
- Q An insulated, rigid tank whose volume is 0.5 m3 isconnected by a valve to a large vessel holding steam at 40 bar,480°C. The tank is initially evacuated. The valve is...
- Q If the steam is now expanded from 10 bar and 500 degree Celsiusto 0.04 bar with isentropic efficiency of 90%, in what respectsdoes the ideal gas assumption become invalid. Compare...
- Q how these Die-tools are traditionally manufactured.6 types of Traditional manufacturing methods relevant to diemanufacture e.g laser jet cutting, water jet cutting, milling,lathing etc? (should cover following information and nomore than...
- Q Assume the average home requires an electrical power of 1.2kW,an average life expectancy of 75 years, and only power from nuclearenergy. For such a homeowner, what would be the lifetime...
- Q How would you rapidly manufacture tooling for injection molding?Explain any difficulties that may be encountered.
- Q Report about Mechanical Properties in engineering mareialsWith refrences: citation
- Q Why is cooling the work (e.g., with a fan) important in theprocess of 3d printing?
- Q How do scientists at pharmaceutical companies use 3d printing todesign drugs?
- Q Consider rider on a typical bicycle pedalling up a hill.Specifically, the case when the cyclist is using their body weightalone to apply the pedalling force. Draw a diagram of the...
- Q 3. (a) Outline with the aid of a schematic diagram the differentstages in the processing of an Interstitial Free strip steel(b) Discuss the principles of the pearlite transformation in aeutectoid...
- Q A multi-stage gas turbine is to be designed with impulse stages,and is to operate with an inlet pressure and temperature of 6 barand 900 K, and an outlet pressure of...
- Q Engine oil at a hundred degrees Fahrenheit passes through 1/8inch diameter tube at a volume flow rate of 50ft3/m . Ifthe surface temperature is 150 degrees F, what is the...
- Q Design a DISC BRAKE based on the given below.Draw schematic diagram and show complete solutions/computationswith direct subtitution. Also compute for the forces involved inthe system.GIVEN:Braking Force (HP) = 15 HPN...
- Q The power delivered to the wheels of a vehicle (w) as afunction of vehicle speed (V) is given by: w = 0.01417[hp/mph2]V 2+ 0.6300[hp/mph]V - 0.3937[hp] where power is in...
- Q Brine (S.G. = 1.2) flows through a 200 gpm pump. The pump outletis 6†pipe and is 4 feet above the 8†pipe inlet. The inlet vacuumis 6†Hg. Outlet...
- Q A piston-cylinder heat engine has five kilograms of air as theworking fluid. Analyze this engine as a Carnot engine and determinethe work of expansion and the amount of heat rejected...
- Q Design documents state that a total of six M10 x 1.5, class 5.8bolt and nut pairs fasten a 15 mm thick steel cap to a 15 mm thicksteel flange. Safety...
- Q Q2/ In one of applications, wanted to conditionlaboratory at inside design condition DBT-24 °C and 50% Rh andoutside design condition DBT-44 °C and WBT-27 °C. Total sensibleload for the space...
- Q To be able to use the conservation of energy on a moving body todetermine key characteristics about the mechanics of the system. Apackage of mass m = 0.70 kg is...
- Q A major application of ferro- and ferrimagnetic materials is intransformer and motor cores. Materials are required that aremagnetically soft (high permeabilities – they are magnetized easilyat low applied fields and...
- Q equation of motion
- Q Material Science:If you were to be given a DSC (Differential scanningcalorimetry) trace of a polymer, how would you identify changes andcharacteristics of the polymer? I understand this is a vaguequestion,...
- Q ThermodynamicIn a piston-cylinder air at 100 kPa and 15°C undergoes thefollowing cycle. First, it is compressed isentropically to acompression ratio of 20. Then 1800kJ/kg of heat is transferred to the...
- Q Define hardness, and explain the variation of hardness withrespect to the slip systems in the material.
- Q A Carnot heat engine within a piston cylinder has 10 kg of airas the working fluid and operates between 1000 K and 350 K. Duringthe heat addition process the pressure...
- Q This is for a VF-30 Bonfiglioli worm drive Gearbox6.1 Housing6.2 Worm Gear6.3 Worm ShaftFor each of the MAJOR components (6.1, 6.2 and 6.3) stated only,analyze and identify the manufacturing processes...
- Q So what is the basic definition of Mechanical and ElectricalSystems? In addition, what does the word \"energy\" mean?
- Q A rail-gun fires a tungsten projectile horizontally with an exitmuzzle velocity of 1500 m/s. The horizontal acceleration of theprojectile is given as ax = -40vx^2 + 125000vx - 96900000 where...
- Q 4- If the drag force on a smooth sphere depends on the velocity(V), sphere diameter (D), viscosity (?), and density (?), usedimensional analysis to show the drag coefficient on the...
- Q Explain How fuel system components works:Booster pump-Jet Pump-Surge tank-Crossfeed valve-Jettison valve-Capcitance fuel gauge-
- Q What is the purpose of a throttling valve? What are theimplications of having a throttling valve prior to the pump inlet?Explain in terms of NPSH. i.e. what will happen if...
- Q Consider 50 moles of carbon dioxide in a piston-cylinder that isisothermally compressed at temperature of T=350 K from 100 kPa to400 kPa. What are the changes in the total entropy...
- Q A seismic instrument (a mass connected to a spring and a damper)is employed to record a periodic input signal y(t)=0.5cos(15?t),where y = displacement [cm], t = time [sec]. Thedamping ratio...
- Q 10–15E A simple ideal Rankine cycle with water as the workingfluid operates between the pressure limits of 2500 psia in theboiler and 5 psia in the condenser. What is the...
- Q Design an HVAC system for an office building. All of the officesshould be maintained at 72°F.Model a corner office, 6m by 6m and 2m high. Make the exteriorwalls glass and...
- Q Water at 68 deg F flows in a 6 inch diameter smooth pipe. Whatflowrate in gallons per minute is flowing if the pressure dropacross a 3 in diameter long radius...
- Q An ideal gas is contained in a piston-cylinder device andundergoes a power cycle as follows: 1-2 isentropic compression froman initial temperature T1 5 208C with a compression ratio r 5...
- Q Design a Turing Machine to construct the function f(n) = 4 [1/4n] + 2, (that is, 2 more than 4 times the integer part of 1/4 n)for n Element N....
- Q Evaluate a room 12'x12' height 10' write a heat transferequation consistent with the room dimension,
- Q Anisotropy frequently occurs in materials. Suggest howthis anisotropy might occur(hint: consider manufacturing processes) and how a knowledge of thelevel of anisotropymight be important when designing components. Use polymer shoppingbags as...
- Q You are one of five astronauts in a spacecraft that is travelingin deep space. Your spacecraft can be thermally modeled as acylindrical shell made of polished aluminum with uniform thicknessthat...
- Q Howfactor safety is important in design of hydraulic cylinder?
- Q a.What is the difference between endurance limit materials andothers?b.What is an S-N curve? And explain this based on the wing of anaircraft in flight.c.Why do fatigue cracks only grow during...
- Q How does automation harm and benefit humanity?-----Demonstrate both sides of the ethical dilemma-----
- Q Howdoes pneumatics work with air compressors
- Q Explain the significance of, and the mechanisms behind, slip inmetals. What is a slip system? In a pure material, what governs theease of slip? Why are some crystal structures easier...
- Q Use Matlab and write entier scriptProblem 2.Generate the estimate (linear estimate) for y_est, and plot(x ,y_est).Use “hold on†and plot(x,y) and plot(x,y_est), so that you cansee the result of the...
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