Mechanical Engineering question and answers for July 15, 2023
- Q The Young’s Modulus of Aluminium is around 70 GPa. Comment on any difference obtained from the experiment and the expected value of 70 GPa.
- Q Each of the two wheels of a motor bike have a mass of mw = 10kg, radius of rw = 330 mm, and radius of gyration kw = 0.25 m....
- Q In a non-ideal Rankine cycle saturated vapor (x=1) enters theturbine at 8.0 MPa and saturated liquid water (x=0) exits thecondenser at a pressure of Pexit. Pexit = 0.006 MPa. The...
- Q An iron block of mass miron = 1 kg at a temperature of Tiron =200°C is thrown in sub-cooled water of mass m at Twater = 25°Cenclosed in an insulated...
- Q 3) A vortex tube receives 0.3 m3/min of air at 600kPa and 300 K. The discharge from the cold end of the tube is 0.6kg/min at 245 K and 100...
- Q What is the principle behind the velocity measurement of fuid?What is static pressure? 7. What is flow rate? How to measure theflow rate? How to determine the volmne flow rate...
- Q hey everyone i would like to need a solution for 1.9D, 1.15D and1.18D from chapter 1 book fundamentals of machine component design5th edition1.9D An incident occurred resulting in a worker’s...
- Q determine the speed of sound in refrigerant-134a at 0.1 MPa and60°C
- Q a.) What are the two main types of TTT diagrams that are widelyused?b.) Why do isothermal TTT diagrams exhibit such a characteristicC- shape for diffusional transformations?c.) Which influence do alloying...
- Q piper cherokee wing area is 16m², span is 9.75m. totalweight is 1100kg. airfoil is NACA 65-415 and lift coefficient slopeis 0.1033 per degree. αL=0 is -1.5degree. Assume τ = 0.12....
- Q Explain what is Poisson’s ratio, and define all the variables inthe definition.What is the maximal (minimal) value of the Poisson’s ratio?Does the volume change in compression and expansion depend on...
- Q Sketch model system and explain the use of nuclear energy forPWR (pressure Water Reactor) Power Plant. Complete your answer withT-s, P-v and h-s diagram if known:Compressed liquid enter heat exchanger...
- Q a.Why is the radius of crack opening critical?b.Explain the crack growth from a surface crack and how itgrows. Why does it not need to be over half the cross sectionalsurface...
- Q Whatis barling effect in open die forging in operationHowcan it minimizedShortclear answer be neat
- Q Six Sigma intended to be deployed from the Top - Down, i.e. fromCorporate Level down to Process Level. Share your thoughts withregards to trying to deploy the strategy from the...
- Q A two-phase liquid–vapor mixture of Refrigerant 134a iscontained in a 2-ft3, cylindrical storage tank at 100 lbf/in.2Initially, saturated liquid occupies 1.6 ft3. The valve at the topof the tank develops...
- Q You graduated as a mechanical engineer five years ago, taking ajob as a trainee engineer with a major automotive manufacturer.Since you were not happy with this company, you left three...
- Q Air enters an adiabatic compressor at 100 kPa (absolute) and 20ºC at a rate of 0.075 m3 /s, and it exits at a pressure of 900 kPa(absolute). The compressor has...
- Q How does a crack grow and why does the mean stress levelinfluence the rate of growth within a metallic component? Is thismaterial specific and if so explain why? Include how...
- Q Describe and quantify what you can do to improve ridecomfort in a multi-degree-of-freedom model. make an example
- Q Research paper on: Features and benefits of condensing oil furnaces, in one paragraph
- Q I need a research paper on: Electronic controls foroil burners, in one paragraph.
- Q The city of La Paz in Bolivia lies at an altitude of 3650m abovesea level. Average atmospheric pressure is 62.3 kPa, averagedaytime temperature is 8.8 oC, and average relative humidity...
- Q Water enters a circular tube whose walls are maintained at constant temperature at a specified flow rate and temperature. To compute the rate of heat transfer between the walls and...
- Q the standard SI unit of dynamic viscosity n is N *s/m2 Derive the unit of kinematic viscosity v= n/p ism2/s, where p is density. The acceleration due togravity g has...
- Q Metallic materials used in aeronautical industry can besusceptible to pitting. Select a metal that is known to pit anddescribe environmental conditions and corrosion-influencing factorsthat can cause pitting of this selected...
- Q Steel is used as a roofing material in a chemical refinerylocated in Darwin, Northern Territory. Estimate atmosphericcorrosion rate of steel by employing the following approachesISO 9223Bilogarithmic lawISO CORRAGDiscuss the general...
- Q Discuss the hazards that can effect from control valvefailure
- Q Manufacturing processWhat are the main functions of the matrix and reinforcingphases in general composites?
- Q Two water reservoirs are joined by a sharp ended flexible pipe100 mm in diameter and 36 m long. The ends of the pipe differ inlevel by 4 m. The surface...
- Q A pipe, 900 m long and 200 mm in diameter discharges water tothe atmosphere at a point 10 m below the inlet level. With an inletpressure of 40 kPa gauge,...
- Q A pressure vessel support bracket is to be designed so that itcan withstand a tensile loading cycle of 0-500 MN/m2 once every dayfor 25 years. Which of the following steels...
- Q Write 10 steps to make more efficient manufacturingprocess than vacuuming machine we used?
- Q Q3 An engineer in the maintenance department after presenting aGh¢5000 scheduled activities to management was given Gh¢4600 tocarry out the exercise. Explain what he can do in order to performthe...
- Q A 1000kg uniform wheel shaped piece of steel is at rest. A 1kWengine turns the wheel with its full power.radius of disk is.3mWhat rpm will it reach in 1 hour,...
- Q Five kg of water is contained in a piston–cylinder assembly,initially at 5 bar and 500°C. The water is slowly heated atconstant pressure to a final state. The heat transfer for...
- Q Q3 An engineer in the maintenance department after presenting aGhe5000 scheduled activities to management was given Ghe4600 tocarry out the exercise. Explain what he can do in order to performthe...
- Q Which of the following are problems with the current rapidprototyping technologies? a. Inability of the designer to designthe part, Part shrinkage, & Inability to convert a solid partinto layers b....
- Q What fuel economy should be expected from a gasoline powered carwith the following parameters: mass=1000kg, frontalarea=2.0m2 , cd=0.25, crr0=0.01,crr1=0.00015, cb=0 if it is traveling at70mph? Assume a 30% thermodynamic efficiency.
- Q A rigid, well-insulated tank contains a two-phase mixtureconsisting of 0.005 ft3 of saturated liquid water and 2.7 ft3 ofsaturated water vapor, initially at 14.7 lbf/in.2 A paddle wheelstirs the mixture...
- Q A batter hits the baseball A with an initial velocityof v0 = 97 ft/sec directly toward fielderB at an angle of 40° to the horizontal; the initialposition of the ball...
- Q Â Select the best engine in term thermal efficiencies of an actual and reversible heat engine of two heat engine given below and give reason for your selectionEngine A:-Source temperature 800K,...
- Q Manufacturing Process3) It’s been more than 3 decades since the invention of AdditiveManufacturing processes. However, still we cannot see introductionof many Additive Manufacturing products into the market. What isthe reason...
- Q Atrain starts from rest at station A and accelerats at 0.5 m/s^2 for60s.afterwards it travels with a constant velocity for 15min. Itthen decelerates at 1m/s^2 until it is brought to...
- Q Draw a hybrid solar water heating system.
- Q discuss how moulded tiles on composite materials aremanufactured, especially polypropylene(Pp) tiles (2000 words)
- Q Describe the main functions of drive trains or powertransmission systems used in a milling machine. Include referencesif you can so I research further into it :)
- Q Describe in your own words with appropriate figuresthe Recovery, Recrystallization and Grain Growth in the heattreatment metallic materials after cold work.
- Q In C++c. The program should output the highest and lowest temperatures for the year. Your program must consist of the following functions:a. Function getData: This function reads and stores data...
- Q In c++Write a program that uses a DYNAMIC two-dimensional array to store the highest and lowest temperatures for each month of the year (temperature is a decimal value). The program...
- Q Large thin metal sheets of length L are dipped in anelectroplating bath in the vertical position. Their averagetemperature is initially cooler than the liquid in the bath. Howrapidly will they...
- Q Assume that you are appointed by a university as the technicalmanager of the University's Formula-SAE-A Race Car project and youare required to:a) Identify the relationships between operational objectives andfunctional requirements...
- Q As a systems engineer, you are required to do a trade study oncommon coffeemakers available in market. Conduct product researchand narrow down your choices to five products. Please conduct thefollowing...
- Q A nuclear fuel element is in the form of long solidcylindrical rod (k=0.85 W/mK) of diameter 14 mm is generating heatat an uniform rate of 0.45×108 W/m3 because of nuclear...
- Q A model of Francis turbine one fourth of full size develops 2.8kW at 300 r.p.m. under a head of 1.75m . find the speed and of fullsize turbine operating under...
- Q A bathtub curve consisting of three linear regions as a functionof time (t), namely:1. an infant mortality failure rate that decreases as landa(t) =C1 -C2t2. A zero random failure rate.3....
- Q Using current rapid prototyping technologies, production partsare produced. a. Never b. Always c. Rarely d. Cannot answer thisquestion based on the information provided.
- Q Why is gravity considered in the torque?
- Q Q1 (a)0.5 kg of water is contained in a rigid vessel at atemperature of 125oC and a pressure of 232.1 kPa. The specificenthalpy is 1050 kJ•kg-1. Which of the following...
- Q This chapter applies the energy equation to a pipe flow system.You need to beable to identify (draw) a control volume for the analysis forthe pipeline.
- Q Look at Table 5.2 – read over the often used nondimensionalgroups. No need tomemorize these but they might provide a guide as to what Pigroups shouldappear in a problem
- Q The entrance length can be significant when the pipe length isnot relatively long.How do you determine the entry length and how it compares to thetotal pipelength? If the entry length...
- Q A particle travelS along the circular path from A to Bin 1s. If it takeS 3S for it to go from A to C. Determine Itsaverage velocity when it goes...
- Q A major retail firm is considering a major change in itsdistribution system. It is considering relocating its distributioncenters such that all retail stores can be replenished within 24hours of a...
- Q Consider the following schematic for an experiementalmethodology to measure the convection heat transfer coefficientdistrubution on an airfoil. The metal sheathing is supplied with aheat generation rate of 20 * 106...
- Q Light energy of sufficient intensity can cause materials to emitsound waves depending on their light absorption. Propose a systemto make 2D images of these optoacoustic properties of anobject
- Q List the criteria that you would utilize to determine the optimalfacilities plan
- Q A proposed water tank on the sixth floor (roof top) of the UTPAadministration building would be used to supply pressurized waterfor the campus. A pump fills the tank at a...
- Q MFGE 336 Production Engineering1.  List and describe the 2 mainly utilized locatingmethods2. What are the three fundamental categories of workpiecelocation?Please answer both question
- Q Indicate the most appropriate viscoelastic property to beconsidered for the following applications:Heat build-up during tensile fatigue of a polyethyleneTire flatspottingOptimal noise abatement characteristics of a machinery mountEnergy stored in a...
- Q A single-dwell cam will do the following profile: rise 5 inchesfor 90 degree, return 5 inches for 90 degree, dwell 180 degree.Generate the displacment, velocity, acceleration, and jerk curvesthree times...
- Q Suppose you are the manager of a popular cosmetic company. Yourtop selling brand requires both chemicals and labor. Two productionprocesses are available: Process 1 transforms 1 unit of labor and...
- Q Whyis edge dislocation faster than screw dislocation?
- Q The isentropic efficiency of an ammonia, NH3, refrigerationplant is 0.88. The ammonia enters the compressor as dry saturatedvapour at -16 ? and leaves the compressor in a superheated state at11.67...
- Q How to model an inverted pendulum in matlab and simulink?
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