Mechanical Engineering question and answers for July 04, 2023
- Q Explain SIMPLE INDEXING in Manufacturing of gears with anexample
- Q Complete the following table for H2O. Use data fromthe steam tables.T, °FP, psiau, Btu/lbmPhase description300782(Click toselect)  Compressed liquid  Saturatedmixture  Saturated liquid  Superheatedvapor40Saturated liquid500120(Click toselect)  Saturated mixture  Superheatedvapor  Compressed liquid  Saturated liquid400400(Click toselect)  Superheated vapor  Saturatedliquid  Compressed liquid  Saturatedmixture
- Q 1.True or false. The mass of a closed system cannot change.2. True or false. Fahrenheit scale cannot be used inthermodynamics relations.3. True or false. An extensive property can be a...
- Q A band is playing at the Falls Festival. The stage is 1.5m offthe ground and there is a flat wall behind them. The sound radiatesout from the band, acting like...
- Q 2)Â Â If a casting is cooled quickly, we expect the SDAS to?a) increase b) decrease c) not be affectedA casting process which uses silica grains bonded with claywould be?a) investment casting...
- Q A 1000 MW power plant of 35% thermal efficiency is proposed. Theplant burns 3% sulphur coal with a heating value of 6000 Kcal/kgand emits 64000 m3/min of flue gas. What...
- Q draw a sketch for wet armature solenoid. describe how a wetarmature solenoid works.
- Q Identify five of the systems that are necessary for pumpoptimisation
- Q A model of a plane is built to a scale of 1/14 and is tested ina wind tunnel.If the plane is designed to travel at 800 km/h at an altitude...
- Q What causes surging in a centrifugal compressor
- Q Given the following events in the table below and knowing thatthey are provided for a four stroke, spark-ignition engine runningat 2500 RPM, please fill out the missing information.Note that: BTDC=before...
- Q In a hexagonal close-packed (HCP) material, let a represent theinteratomic spacing within a close-packed layer (plane), and let crepresent the lattice parameter normal (perpendicular) to theselayers. There are two close-packed...
- Q A vessel initially contains 5.0 kg of liquid water and 2.0 kg ofice at 0 C. Energy is added until the ice has just melted. Thetemperature at the boundary where...
- Q Water is the working fluid in an ideal Rankine cycle. Saturatedvapor enters the turbine at 16 MPa, and the condenser pressure is 8kPa. The mass flow rate of steam entering...
- Q Name some of the metallic and non-metallic materials used in pumpconstruction,against the following applications1) Hazardous Nature Fluids2) High Temperature Fluids3) Corrosive Fluids
- Q create a questionaire that can be used to compile a report forthe assignment below\"The students are expected to visit any company oftheir choice and find out how they do theirmaintenance...
- Q Diversifled printing technology in the modern time
- Q For this activity, your assignment is to develop and complete aguide to materials handling hazards and controls. You will need todevelop a document that includes the following sections:General Materials HandlingManual...
- Q 1. If you know the measured electrical voltage and thecross-sectional area of the pipe/tube you can determine the volume?T/F2. In order to use the electromagnetic type of meter what kindof...
- Q Describe communication protocols and specify at least 3 of themodern protocols in use
- Q For this question (Determine the velocity of the 60 kg block Aif the two blocks are released from rest and the 40 kg block Bmoves 0.6 m up the in...
- Q MATLAB based problem: Create a motoring model for the enginewith the following specifications, and plot the in-cylinderpressure against (i) cylinder volume and (ii) crank angle degrees(20 points)  Bore =...
- Q Management for Engineers- You intend to set up an automotive workshop. Theworkshop provides services such as general vehicle repairs, tyrechecks and other related works.Describe the steps, procedures,considerations andprocesses you will...
- Q Management For EngineersYou intend to set up an automotive workshop. Theworkshop provides services such as general vehiclerepairs,servicing,tyre checks and other related works.Describe the steps, procedures, consideration andprocesses you will take...
- Q You are to present a research proposal with regards to the topicof \"Investigation of the Mechanical Properties ofAtherosclerotic Plaque Tissue\", however for this to besuccessful, a \"good\" research question(s) must...
- Q Using words andvisuals, briefly describe the temperature dependence of stiffnessfor the following classes of polymers. Explain how the structureand bonding in these materials contributes to the observedtemperature-dependent properties (structure-propertyconnections).Amorphous andsemi-crystalline...
- Q Consider a small Pelton wheel hydro turbine, with a total head(reservoir surface to nozzle elevation difference) of Ht = 200 ft.The flowrate to the turbine is 185 gal/s. If the...
- Q Architectural plans question: when reading the specifications ofconstruction plans; the specification calls for anchor bolts thatmeet ASTM standard F1554 Grade 36, do these standards give the sizeof anchor bolts needed?...
- Q An oil at 50C with properties similar to engine oil passesthrough a 30 cm diameter pipe with an average velocity of 6 m/s. A200 m long section of pipe passes...
- Q P5. Coal power plants operate at high temperature of about 600C,whereas a jet engine operates at high temperature of about 1200C.Would you recommend replacing the coal power plant with the...
- Q Lets say I have a second order ODE:mx''+kx+bx'=kz+bz' ( an EOM where m=3000,b=2000, k=50000, and finally z=.01sin(3.5t)).In Matlab, how would I use theMatlab command ode23 to solve this ode assuming...
- Q Consider a Kantrowitz-Donaldson diffuser designed for a flightMach number of 1.8. The entrance area equals 3.0 ft2and the ambientairtemperature and pressure are 500ï‚°R and 0.8atmosphere. The flowis isentropic everywhere except...
- Q A Carnot heat pump moves heat to a warm house at 24°C at a rateof 300kW. The heat is pumped from the outside air at 7°C. What isthe power required...
- Q a. A shaft is used to transmit power. What does this mean?b. Explain the general process of choosing a material for ashaft.c. Discuss the considerations that must be made when...
- Q 5. A fluctuating external load of Ppeak = 4500 lb isapplied at the bolted joint given in Problem 4.(1) Find the factor nf of safety against the fatiguefailure using the...
- Q What maximum temperature might be expected at the bottom of awell drilled within a relatively high-grade geothermal energy suchas Lightning Dock geothermal resource in southwest New Mexico?Please cite references
- Q A propane tank with 75 gallons of liquid propane is at 50 F in asealed tank. The tank develops a significant leak and propaneescapes and vaporizes in a short period...
- Q (a) Just like the familiar liquid solutions, two metal ions oratoms combine to form solid solution. What are substitutional solidsolutions and interstitial solid solutions? Explain with examplesand sketches.(b) How well...
- Q Do some internet research on the properties of compositematerials. a) Compare the tensile strength of a typicalglass fibre reinforced polymer with the tensile strength of acarbon fibre reinforced polymer. Make...
- Q Air at 20°C (1 atm) is flowing over a 0.025-m diameter sphere witha velocity of 3.5 m/s. If the surface temperature of the sphere isconstant at 80°C, determine the Reynolds...
- Q Comparisons of quality aspects of metal casting processes .Â
- Q For each of the product applications below answer the materialdesign, requirement and selection questions using the followingformat.a) List the desired material properties (not limited tomechanical properties) for the intended applicationb)...
- Q Look up today’s wholesale prices of natural gas in Texas (4.74Dollars per thousand cubic feet) Calculate how much a kWh ofelectricity should cost, if it is being produced from (a)...
- Q What are the materials that improved water accessibility? Howdid it improve water accessibility?(Can you please not answer handwriting typeit)
- Q What happens to a gas when it expands, specifically how do itsproperties change, include at least temperature, pressure, volume,enthalpy, entropy?
- Q ExerciseEstimate the requirements of steam and heat transfer surface,and the evaporating temperatures in each effect, for a tripleeffect evaporator evaporating 500 kg h-1 of a 10%solution up to a 30%...
- Q A strain hardened 360 brass sample that has been cold worked andthan placed into a furnace at 480 degrees C for 40 minutes. cooledthan poslished and etched.What is the mechanism...
- Q Define fatigue. Mention some of the important parameters bywhich fluctuating stress cycles are characterized.?
- Q 1. Determine AtomicPacking Factor for HCP when atomic radius is r (show all works forfull credits)2. Determine AtomicPacking Factor for Rhombohedral when atomic radius is r and gamma(angle) is 120...
- Q Choose an occupational health hazard interest to you.*********************** Do not copy write orjust post something from google, you will get a thumbs down!!!please and thank you***** do not hand write...
- Q Â Part A: Define actual and theoretical mechanical advantage, using words as well as equations.Part B: What law of physics forbids the efficiency of an actual machine from being equal to...
- Q 1. The following are economic criteria to evaluate anengineering project, except one. Which one?Select One:a) Maximum Profitb) Minimum Profitc) Maximum Rate of returnd) Minimum Pollutione) Minimum Payback period2. Engineers often...
- Q An activated sludge aeration blower is delivering air todiffusers in an aeration tank. You want to estimate the isentropicefficiency and the work input (by the motor). At the blower inlet,the...
- Q An air compressor operating in adiabatic steady flow takes inair at 17 C, 200 kPa and discharges is at 1300 kPa. Calculate theminimum work required to drive the compressor assuming...
- Q Step by step design step-cone pulley in SOLIDWORKS
- Q Formula 3 =  y( x) = (x^3 - 2x^2 + 5x – 25)/40In terms of hand calculations, determine the root of Formula 3given above by using the Newton-Raphson method. Start with...
- Q Â The TED talk by Katherine Kuchenbecker was extremely controversial and brought about different aspects of robots and AI that I had previously never thought of. Throughout her video, she focuses...
- Q The Ford Expedition has a 65.5-in. track and a 20-ft turningradius. The P265170R17 tires have a nominal radius of 15 in. If thevehicle was designed with a solid rear axle...
- Q An unbalanced engine mounted on an elastic support imposes aperiodic vertical force on the support at the rotational frequencyof the engine. In order to determine the relationship between theengine rotational...
- Q The displacement volume of an internal combustion engine is 2.21liters. The processes within each cylinder of the engine aremodeled as an air-standard Diesel cycle with a cutoff ratio of 2.5.The...
- Q An air-standard dual cycle has a compression ratio of 9.1 anddisplacement of Vd = 2.2 L. At the beginning of compression, p1 =95 kPa, and T1 = 290 K. The...
- Q An air conditioner using refrigerant-134a as the working fluidand operating on the ideal vapor-compression refrigeration cycle isto maintain a space at 30°C while operating its condenser at 1000kPa. Determine the...
- Q 1. Describe the general characteristic of this pump seriesincluding pumpingmechanism type, housing material, bearing type,etc..
- Q Is there an observable trend or difference between all theflowmeters readings (venturi, rotameter, and orifice) and thesystem flow rate (obtained using magnetic or coriolisflowmeters?
- Q 1. Describe the general characteristic of this pump seriesincluding pumpingmechanism type, housing material, bearing type,etc..
- Q Give a scientific method or ways to determine, investigate, oranalyze the characteristic and behaviour of electric-powered twoand three wheelers in terms of the factors such as safety, traveltime, accessibility, cost...
- Q a) What is flow work? Which term(s) in the energy equation foran open system represent the flow work?b) What is the Reynolds transport theorem? Why is it neededfor open systems...
- Q What is Freezing Range? Describe the significances of FreezingRange of a material in casting.
- Q Air enters the diffuser of a ramjet engine at 22 kPa, 228 K and avelocity of 920 m/s, decelerating to a negligible velocity at thepoint at which heat is added....
- Q Consider 6.9 kg of austenite containing 0.40 wt% C, cooled tobelow 727ËšC (1341ËšF).(a) What is the proeutectoid phase?(b) How many kilograms each of total ferrite and cementiteform?(c) How many kilograms...
- Q (a) If you want to extrude a Y-shaped profile, what is themaximum allowable branch length you can obtain if you use a 4â€billet? The Y-shaped profile has a design that...
- Q In this exercise we will utilize the tables for superheatedwater vapor, (D-3). All graphs should be generated using plottingsoftware, e.g. Excel, MatLab, etc. (If you use NIST, do NOT utilizethe...
- Q Five kg of oxygen (O​2​), initially at 430°C, fills a closed,rigid tank. Heat transfer from the oxygen occurs at the rate 425 Wfor 10 minutes. Assuming the ideal gas model...
- Q At the beginning of the compression process of an air standardOtto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in thecycle is 2250 K and the...
- Q A 4-cy wheel loader will be used to load trucks from a quarrystockpile of uniform aggregates (1\" and over in size). The hauldistance will be negligible. The aggregate has a...
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