Mechanical Engineering question and answers for July 13, 2023
- Q For a base motion system described by:mx''+ cx'+ kx = cY?b cos ?bt + kY sin ?btwith m = 100 kg, c = 50 N/m, Y = 0.03 m, and...
- Q Naphthalene is commonly used as a repellent againstmoths to protect clothing during storage. Consider a 1 cm diameterspherical naphthalene ball hanging in a closet at 25 oC. Thedensity and vapour...
- Q Explain with your own words, how turbulence increases heattransfer.
- Q If a candle is lit in a spacecraft without gravity...Question 8 options, pick one:a. The candle will light, but not burn very well, as no naturalconvection flows develop.b. The candle...
- Q Materials ScienceWhat are the frequently observed problems of using polymermaterials in cars ?
- Q What are designs/devices being used today for finger jointreplacements (MCP) *include about 3 or more devices*1. Description of each device (mechanics involved)2.FDA class3. Which current design is the most used...
- Q Discuss the steps in producing a clay-based ceramic from slipclay. Be specific and describe all steps and there effect on themicro-structure of the material - in particular why is the...
- Q This’s about Phase Changes Materials (PCM)Ineed one or half page who have any ideasQ:How PCM will help a laptop operate more fluid and be morebeneficial to the user?I’mlooking for good...
- Q What does stress intensity factor mean K(1) and how does it relateto safety factor?
- Q An industrial gas turbine operates at an 8.8:1 pressure ratioand a mass flow of 77 kg/s. Theexhaust temperature is at 437?C and the inlet temperature to themachine is around 1000?C.The...
- Q Calculate the MRR in a drilling process that is done with a 2 14 - inches radius drill bit, in one piece whose drilling depth is H= 5 3 8...
- Q An industrial gas turbine operates at an 8.8:1 pressure ratioand a mass flow of 77 kg/s. Theexhaust temperature is at 437?C and the inlet temperature to themachine is around 1000?C.The...
- Q Viscoelasticity and the non-linear rheology of polymers areresponsible for phenomena such as rod climbing or die swell as wellas part of the challenge of processing polymer melts. 1) explainwhy from...
- Q 1) A four-stroke diesel engine has a piston diameter of 16.5 cmand a stroke of 27 cm. The compression ratio is 14.3, the cut-off4.23% of the stroke and the mean...
- Q I am planning on purchasing a new Tractor, There are two machinechoices, Tractor A and Tractor B. Tractor A will cost $175,000 andTractor B will cost $275,000. Due to various...
- Q Spherical particle of silica of 0.1mm diameter fallsin water filled in a glass cylinder of 40 mm internal diameter.Estimate the terminal settling velocity of single particle ofsilica. Also calculate the...
- Q Explain what a P, PI and PID controller are and presentimportant features for these controllers.ProportionalIntegralDerivative
- Q Explain the procedures that can be used for tuning the PIDcontrollers. Principles / Advantages / Disadvantages, etc.
- Q •Research/investigate existing teaching models, procedures, andmethods, etc. that used to demonstrate the concept of third angleprojection to students/learners. •Point out the limitation of the existing models, proceduresor methods used. Alternatively...
- Q Solidification Processing:Use a lumped parameter model to estimate the temperature duringcooling and so-lidification of a superheated (Ti =700oC), spherical Al6061 dropletexposed to a room temperature (To = 25oC), turbulentflow inert...
- Q Solidification Processing:Consider the solidification of superheated (Ti =1480oC) Inconel X spheres of varioussizes (from 1 mm to 1 m diameter) in thick walledZircon sand molds originally at room temperatureand use...
- Q Explain how the single card Kanban system works and outline thekey benefits the adoption of this system brings to anorganization
- Q Summarise 3 benefits for manufacturers fromadopting the IoT ( Internet of Things ).
- Q Identify and assess 3 challenges associatedwith the implementation of IoT ( Internet of Things ) within themanufacturing system.
- Q Only need symbolic solution. Already have anual average windsspeeds for location 1 and waiting for location 2 to be assigned.Any help is appriciated.Consider the Turbine #1 and Turbine #2 wind...
- Q a. The Poisson ratio for a volume conserving (incompressible)material is __________________. However, most real materials havePoisson ratio values that are larger / smaller (circle one).b. How many atoms are contained...
- Q Problem #1: Power and temperature changeYou are working with a group investigating biological mechanismsthat determine a predisposition to obesity. Your assignment is tomeasure the rate that energy is output by...
- Q Design {block diagram level} a navigation system which can beused on the desert surfaceand also for operations 100 metersunderground minee. The required position accuracy ib 10m on the.surface and 5m...
- Q Consider the low-speed airflow over the NACA 0012 airfoil at lowangles of attack. The Reynolds number based on the chord is roughlyRec = 2.88 × 10^6. This flow can reasonably...
- Q Is there a pressure loss when water flows through aheat exchanger( specifically a helical coil heat exchanger throughthe tubes ) if it is the case, how do you calculate the...
- Q How does polymeric glass formation prevent flow of linearpolymer? Explain Tg and chemical reasons. How does this preventionof flow effect mechanical charcteristics?
- Q How does glass transition temperature relate to manufacturingprocess/ temperature? How does this manufacture then differ betweencrystalline vs. amorpohous structure? How does linear vs. nonlinearpolymer effect the glass transition temperature?
- Q Why do amorphous solids have high strength and lowductility?
- Q When looking at the glass transition temperature, what happenswhen above and below it? How does this change between thermoplasticvs. thermosetting? Amorphous vs. Crystalline? Linear vs. nonlinear?When does glass formation happen...
- Q 1. Define the four types of chips observed in machining. Explainhow different chips are obtained from materials of differentductility. 2. According to the Merchant Equation, an increase inrake angle would...
- Q 1. What is the difference between traditional ceramics and thenew ceramics, as far as raw materials are concerned? 2. List thebasic steps in the traditional ceramics sequence. 3. What is...
- Q 1. What are the reasons why the bulk deformation processes areimportant commercially and technologically? 2. Name the four basicbulk deformation processes. 3. What is rolling in the context ofthe bulk...
- Q 12. What is forging? 13. One way to classify forging operationsis by the degree to which the work is constrained in the die. Bythis classification, name the three basic types....
- Q 1. Identify the three basic types of sheet metalworkingoperations. 2. In blanking of a round sheet metal part, indicatehow the clearance should be applied to the punch and die diameters.3....
- Q 1. What are the differences between bulk deformation processesand sheet metal processes? 2. Extrusion is a fundamental shapingprocess. Describe it. 3. Why is the term press working often usedfor sheet...
- Q 13. Describe the process steps in sand casting? Compare to diecasting, what are some major advantages and disadvantages of sandcasting? 14. A large steel sand casting shows the characteristicsigns of...
- Q air is compressed in an adiabatic and isentropic compressor from14 psia and 60F to 210 psia. Determine the outlet temperature [F]and the work consumed by this compressor per unit mas...
- Q 7. Identify the three sources of contraction in a metal castingafter pouring. 8. What is directional solidification and what ischill in casting? 9. Total solidification time is defined as(select one):...
- Q 1. Identify some of the important advantages of metal castingprocesses, and also some of the disadvantages and limitations. 2.What is the difference between an open mould and a closed mould?...
- Q Air flows into a commercial steel pipe of 5 cm ID at 70 m/s.The inlet pressure and temperature of the air are 1 MPa and 100?C,respectively.a) Determine the Mach number...
- Q Question 2a) List and describe the five processes that cause wear at theinterface of the tool and chip and the interface of tool and workin machining. What are the two...
- Q Question 3a) In an Electrochemical Machining process, the feedstock ismade of an aluminium alloy (Ultimate Tensile Strength = 572 MPa,Tensile Yield Strength = 503 MPa). The desired time to machine...
- Q 1)Why we want to choose 1-2 heat exchange2) Benefits of using many tubes in the heat exchange3) material use for tube4)shell tube5) why we use 1 inch two pass6) the...
- Q Question 3a) In an Electrochemical Machining process, the feedstock ismade of an aluminium alloy (Ultimate Tensile Strength = 572 MPa,Tensile Yield Strength = 503 MPa). The desired time to machine...
- Q Canrecrystallazion happen on single crystal? How? In what conditioncan it be? Is this related to ‘Poligonization’?
- Q Question 4)a) Explain in some detail the meaning of thermal radiation. Youranswer should include the difference between radiation from otherforms heat transfer.b) What is the stefan-Boltzmann law. How does this...
- Q How can I make calculations and design a toy car running at aspeed of 10m/s and which should cover a maximum distance of 30m?The design should consist of springs, gears,...
- Q themes of gas metal arc welding...I need by report....so give me like thatpleasee give more details about that you can take 5hour
- Q The United States has a lot of federally owned land.Unfortunately, uncontrolled natural forest fires destroy largeareas in the western US every summer. In 2002, about 1,000,000acres of standing timber in...
- Q Air at 1 atm flowing at a rate of 0.1 kg / s has to be cooledfrom 400 to 300K in a tube of 10 cm in diameter with a...
- Q Derive the critical fiber volume fraction with respect tostrength and explain what is it.
- Q single cylinder naturally aspirated engine (CNG) on engineperformance based on high-speed high load comparison with baselineconditions early ignition late ignition and rich and lean PV graphand p theta comparison how...
- Q On a cold day during the winter when the relative humidity is?=70%?=70%, your friend claims that the outside air feels very dry.On a hot day during the summer, the relative...
- Q When a hydrocarbon burns with 300% of theoretical air, is theadiabatic flame temperature higher than, lower than, or equal tothe adiabatic flame temperature when it burns with 100% oftheoretical air?...
- Q James would like to invest some money every year-end for 17years in a money market account earning 5% per year, and then beginto withdraw money from the account to finance...
- Q A Carnot engine operates on air between high and low pressuresof 3 MPa and 100 kPa with a low temperature of 20°C. For acompression ratio of 15, calculatethe thermal efficiency?,the...
- Q 2. What products (at least three different) of biomedicalengineering do you expect to encounter in the near future
- Q A symmetrical wedge with a 12 degree included angle is placed inan air flow which the mach number is 2.3 and the pressure is 60kPa. If the centerline of the...
- Q It is required to lift a skip whose load total is 1kN. Twosimple lifting jacks are available both having an effort pistondiameter of 10mm and a load piston diameter of...
- Q If the weight of the contents in a vessel is measured and thedensity of the material is known, fill in the blanks to describewhat steps are required to determine level....
- Q Thewater quenched 1045 sample had a higher hardness and tensilestrength than the air cooled sample? Explain in term ofmicrostructural theory as to why this is the case.
- Q I am designing a gas heater and a heat exchanger for a swimmingpool. As I am starting with my calculations for the heat exchanger,one of the values that I do...
- Q 1. Identify 7-10 primary functions of a common laptopcomputer.2. Identify 7-10 primary parts/components of a common laptopcomputer.3. Allocate the functions in (a) to the parts/components in(b).this is related to systems...
- Q Discuss the crystal structure of martensite and how this affectsits mechanical properties. Identify the advantages anddisadvantages of this material, and suitable practicalapplications. (500 words
- Q Groover/Introduction to ManufacturingProcessesCasting Case Study: Kevin Working inDetroitKevin was very excited about his new engineering job nearDetroit. He was finally going to be able to contribute to the nextgeneration of...
- Q 1.Explain how hot rolling can be used to manipulate themechanical properties of metals, with respect to grain structure.(500 words)
- Q Engineers makes the quality of life easy, discuss.
- Q explain in details why is it not possible to have 100%safety in case of disaster.
- Q Assess the relevance of Mechanical Engineeringdiscipline going by the new technological trends.
- Q Hello. My question is what is the equation of magneticattraction force to iron? How it will lead to that equation?
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!