Mechanical Engineering question and answers for August 06, 2023
- Q Explain in your own words how would you inspect a Steering gear orrack and pinion power steering system leak? Name as many causes forleaks that you can think of.Thank you...
- Q please read the article in online 'Understanding theTragic Hyatt Regency Walkway Collapse' and explain what otherdesign faults that had occurred resulting to higher risks andsafety hazards to the guests and...
- Q As a mechanical engineer, design a hydraulic circuitwith pushing and pulling force using a lever. Please consider aminimal usage of components in your design. Explain the operationbased on directional control...
- Q Hi, i want 5 (report) conclusions for each topic1-The application of Bernoulli’s equation2-Major&Minor Losses in Pipes
- Q Please explain what added to the proliferation and expansion ofgeneral aviation aircraft in the 1960's and 1970's.
- Q An air-conditioned room is to be maintained at 18oC, percentagesaturation 40%. The fabric heat gains are 3000 W and there are amaximum of 20 people in the room at any...
- Q A water tank consists of a cylindrical part of radius r and height h and a hemispherical top. The tank is to be constructed to hold 600 m3Â when filled. The...
- Q Create a structure array that contains the following information fields concerning the road bridges in a town: bridge location, maximum load (tons), year built, year due for maintenance. Then enter...
- Q A smooth steel sphere of specific gravity (SG) 7.82 anddiameter25.4mmis dropped into a large tank of oil(r=820kg/m3,μ=0.9Pa.s). Calculate the terminal velocity of the spherenoting that drag coefficient is a function...
- Q Tech A says that in some vehicles, airbag deploymentcan be based on the speed of the impact and the weight of the seatoccupant. Tech B says that the SRS seat...
- Q There are 10 m3/s of moist air at 22C and relative humidity of50% that enter aheating element until its temperature becomes 35C. Determine theamount ofheat required and the final %Rh...
- Q A 32 inch diameter pump handling 22000 GPM flow of water comingfrom an atmospheric tank storage is running at 1170 rpm. The watertemperature can be taken at 25 C. The...
- Q In a slab of material 0.25 m thick and having a thermalconductivity of 45 W/mK, thetemperature °C at x under steady state is given by T = 100 + 200x...
- Q With the aid of a graph, explain the termDiesel Dilemma, stating why it is not possible to have highefficiency and low emissions.
- Q Automated inspection can be integrated with the manufacturingprocess to accomplish some action. What are these possibleactions?
- Q 12. Identify at least one problem associated with usingcarburizing environment while sintering the plain carbon steelsprockets.13. Identify at least one problem associated with using oxidizingenvironment while sintering plain carbon steel...
- Q what role does the keyboard play in each of the followingexamples: rhythmic, harmonic or melodic?ThereminOndes MartenotTrautoniumHammond OrganFender RhodesMellotronMiniMoogARP OdysseyKORG MS-20Prophet 5OberheimPPG-WaveYamaha DX-7
- Q The following problem description applies also to the next twoproblems.A piston-cylinder device contains 2 kgof a saturated liquid mixture at an initial state 1 withp1= 100 kPa andx1= 0.8. The...
- Q What is biomass and write few examples of biomass? Write the chemical composition of biomass. What role does biomass have to play in our energy supply?
- Q Does bauschinger effect play a role in fatigue behaviour ofmaterial?
- Q What role does the manifold and production header play in a surface facility designed for reservoir fluids production?Â
- Q The idealized cross-section of a two-cell thin-walled wing box is shown below with the data in Table 22.7. If the wing box supports a load of 44,500 N acting along...
- Q You currently have an electric hot water tank to produce yourdomestic hot water, which operates at 95% efficiency, and consumes25 GJ of electricity to per year. You get a new...
- Q Please explain the effect of size of supercooled region, presentjust ahead of liquid solid interface, on the shape/type of liquidsolid interface and eventually on the final microstructure of analloy during...
- Q Indicate whether the following statements are true orfalse. Explain.The energy of simple compressible systems can be changed byenergy transfer and by work associated with volume change.A polytropic process with n...
- Q Air at Mach 1.8 at an altitude of 8 km ISA, passes through anormal shockwave.a) Calculate the velocity of the flow in units of metres persecond after the shock wave.b)...
- Q Define mass density and specific weight.Define specific volume.Define specific gravity.
- Q Question 1A copper tube having a cross-sectional area of 2000mm2 and length of 300 mm is placed between two rigidcaps. Four 22 mm diameter steel bolts are symmetrically arrangedparallel to...
- Q Air enters the compressor of a simple gas turbine atp1 = 14 lbf/in2, T1 = 520°R. Theisentropic efficiencies of the compressor and turbine are 83 and87%, respectively. The compressor pressure...
- Q Moist air enters a conditioner operating at steady state at40oC and 60% relative humidity constant pressure process at 1 atmfrom to. The air is first passed over cooling coils and...
- Q Calculate the temperature T of 40 kg of CO2 gas in a 500 litervessel at 5 MPa. The critical pressure of CO2 is 7.39 MPa and thecritical temperature is 31.05...
- Q What type of tool or technique you are suggesting to chooseappropriate materials, methods and machines to take decision onenhance existing production cell? Why do you prefer that tool ortechnique?
- Q An exhaust fan systems consists of 4 parallel v-belts wrappedaround driver pulleys A and driven pulley B with a diameter of 100mm and 240 mm respectively. Coefficient of friction, μ...
- Q Find the critical path and critical time for thefollowing business network:Activity Pre. Act. DurationA - 18B A 25C B 1D C 14E C 12F E 1G D 18H E,G 3I...
- Q The figure below gives data for an ideal vapor-compression heatpump cycle operating at steady state with Refrigerant 134a as theworking fluid. The heat pump provides heating at a rate of...
- Q A local elevator moves upward at a constant 3.3 mps passing astopped express elevator. Precisely 2.8 seconds later the expresselevator starts upward with a constant acceleration and catches upwith the...
- Q q1) Fluid ( Ï = 850 kg/m3; μ = 0.08 Pa.s) flowsthrough a 4-cm diameter tube at 0.5 m/s. The Reynolds number of thefluid isq2 ) An oil with Ï=...
- Q When aging an aluminum alloy, the final hardness depends on timeat the heat treatment temperature. The time to achieve peak age(maximum hardness):a.Increases with increasing aging temperature.b.Is not affected by aging...
- Q Question 1a) Determine the specific enthalpy of steam at 15 barand 275°C .b) Determine the degree of superheat and entropy ofsteam at 10 bar and 380 °C.c) A superheated steam...
- Q A torsion test is performed on an aluminum probe, with the following results given in the following table:(degress(º))05101520253035404550556080T kgf.m05111414.514.716.316.416.516.616.716.416.516The probe dimensions are as follows:Length(L)Diameter(D)18010Through your graph of behavior of shear...
- Q Do the following stress tensors represent the same stress state or not? Prove your judgement.
- Q 3. The compression ratio of the ideal air-powered diesel cycleis 14, while the cutting rate is 1.8.Since the air was initially at100 kPa and 25 ° C;a. Pressure and temperature...
- Q The radius of the impeller of a centrifugal pump at the inlet is6 cm and at the outlet is 10.5 cm. The blade angles β1 and β2 arerespectively 33o and...
- Q An expansion tank is a necessity in a chilled watercooling network because:The network is a closed loop systemIt allows for the variation in temperature of chilled water inthe chilled water...
- Q Indicate whether the following statements are true orfalse. Explain.The specific enthalpy of an ideal gas is a function oftemperature and pressure.Air cannot be regarded as a pure substance.Liquid alternatively referred...
- Q Please answer in less than an hour :)Can you explain and show how we get the Specific Cuttingpressure in GPa if vertical force is 0.882 kN, feed rate is .0508mm/rev,...
- Q Q2 Describe the following tools as used indirectional drilling.I. Bent Sub and Positive Displacement MotorII. Nonâ€Rotating Steerable Drilling SystemsIII. Rotary Steering SystemIV. Directional Bottom Hole Assemblies (BHA)V. Whipstocks
- Q 10 cm of copper with square cross section of 1x1 cm exposed to200 KN tension forcecaused 15% permanent reduction in cross section area , ifthe fracture got on this point,calculate...
- Q Effect of wind rang and endurancewrite a report about it and write down the referencesanyassumed number
- Q Its career planning questionWrite a brief an example of typical \"elevator pitch\"(explained in lecture) that you could use to introduce yourself toanyone when networking. An elevator pitch should be 1-5...
- Q --fluid mechanics--The diameter of the soap bubbles (d) formed by a bubble toy isthought to be a function of surface tension between the soap-watersolution (σs), the pressure difference between inside...
- Q i. Assuming you are new engineer working in R & D divisionat manufacturing company which has decided to evaluate CAD/CAMsystem to adopt in your company in order to meet Industrial...
- Q Q2.a. List the difference between non-fusion and fusion forms ofwelding.b. Describe how the rightward or backward welding technique is doneand stating its advantagesand also when it is mainly used.c. With...
- Q For a butanol combustion process (formation enthalpy -332,000 kJ/ kmol) C4H10O with an excess of 25% air (reagents are at standardconditions T = 25 C, P = 1atm).Determine:a. Adiabatic flame...
- Q Q1In the aerospace industry, the material cost is small inrelation to the total fabricated cost of the material. If we assumeapproximately 10% of the total value of a pound saved...
- Q Explain how the load conditions related to shear diagram, andhow shear conditions related to moment diagram.
- Q Â When designing a column against buckling, how do you decide weather to use the Johnson or Euler formula in your calculations when computing the critical buckling load?
- Q You are considering two columns with identical dimensions. Oneis constructed out of steel, the other aluminium, which will buckleat a smaller load? The euler formula for critical buckling forcefor column,...
- Q Based on the Pb-Sn alloy phase diagram, explain why Pb-Snalloy was widely used as the solder material in the reflowsoldering process in the past and it is much less used...
- Q Q2 The pump of a LiBr--water absorption refrigerationsystem delivers (0.7 kg/s) ofsolution. The absorption system operates at the followingtemperatures: generator (I 10 'C);condenser (40 'C); evaporator (lO 'C); and absorber...
- Q We will find the Moment of Inertia Moment and Polar Moment of Inertia of a U profile that will determine its dimensions by ourselves.
- Q steps to drill, boring and reaming for 30 mm diameter ofworkpiece
- Q Excellent combinations of hardness, strength, and toughness areobtained fromtempered martensite. An employee in a heat treatment facilityaustenitized an eutectoidsteel at 9500C for 45 min and finally allowed the steel to...
- Q Water enters the condenser of surface type; the temperatures ofthe water that is used to cool the steam is 17oC and 28oCrespectively. The pressure of the condenser is at 0.055...
- Q You are preparing a spaghetti dinner for guests when yourealize that your heat transfer training can be used to answer somefundamental questions about the process. The pot you are usingholds...
- Q For the given plane of a cubic crystal structure, find the followings 1. Miller indices 2. Type of a cubic crystal structure 3. Relation of lattice parameter \"a\" and the radius \"r\" 4. If...
- Q Defects and SlipChromium metal has a metallic atomic radius of 0.200 nm. It shows plastic deformation via slip along the <111> directions.a) What is the planar density (atoms/m2) for its...
- Q Materials Engineeringa) Compare planar densities in terms of atoms per area in termsof a, the lattice parameter for the (100), (110), and (111) planesfor FCC. Which is the closest packed...
- Q The output shaft of a 120 Watt electric motor has a 20°full-depth steel spur pinion with 20 teeth and a module of 2.5 mmdriving a 36-tooth gear attached to an...
- Q A tidal power plant of single-basin type, has a basin area of(24+n1000) km2. The tide hasa range of 10 m. The turbine stops when the head on it falls below3m....
- Q 18-3 For the case study problem, use helical gears anddesign the intermediate shaft. Compare yourresults with the spur gear design presented in thischapter.Case Study Problem Specification:Section 1–18, p. 34, presents...
- Q As engineer you are asking and based on your study torefrigeration cycles and absorption cycle to take the benefits ofthe available energy resources and to design absorption airconditioning system to...
- Q 3. Describe 3 different cases having corrosion by determiningthe material (the alloys with the codes and composition),describing the component having corrosion, the environment makingcorrosion to the component. You will give...
- Q If you have three samples Alluminum, Copper and Nylonand I do a full experiment on them to find their yield strengths,all the modulus data, their haderning and so forth, where...
- Q Saturated water vapor has a flow rate of 1.5 kg/s and a pressureof 0.51 bar. The vapor is to be completely condensed to saturatedliquid in the shell of a shell-and-tube...
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