Mechanical Engineering question and answers for July 06, 2023
- Q Two cylinders of oxygen are connected to each other by a valve.The first tank is 50 liters in volume and contains oxygen at 27 °Cand a pressure of 140.37 kPa,...
- Q if f1=600N and theta=30°, determine the magnitude ofthe resultant force acting on the eyebolt and its directionmeasured clockwise from positive x axis
- Q Compare oxy-fuel, plasma and laser cutting with respect tomaximum temperature reached, materials that can be cut, kerf width,and tolerances.
- Q Conventional thinking in product development has been thatinnovation starts in advanceddeveloped countries like the United States and Japan. Productsmarketed incountries where the average income is much lower often are oldermodels...
- Q A manufacturing operation requires 50 fc on the workplane in a100 ft x 150 ft facility. The walls and ceilings are painted white.The work plane is 25 feet below the...
- Q . A steam main (outside diameter of 16.8 cm and inside diameterof 15.4 cm) is covered with 5-cm of high temperature insulation (k= 0.095 W/m. K) and 3.8 cm of...
- Q The surface energy of a single crystal depends oncrystallographic orientation. Does this surface energy increase ordecrease with an increase in planar density? Why? (Hint: Read“External Surface†part in S.4.6: Surface...
- Q For H2O, determine the specified property at theindicated state.(a) T = 140°C, v = 0.5 m3/kg. Findp, in bar.(b) p = 30 MPa, T = 120°C. Find v, inm3/kg.(c) p...
- Q Find one example of a product where the largest or mostdetrimental environmental impact persumably derived from each ofthe following:ï‚·1. Raw Material Acquisition2. Productionï‚·3. Consumptionï‚· 4. Disposal
- Q One integrated circuit design calls for the diffusion of arsenicinto silicon wafers; the background concentration of As in Si is2.5 × 1020 atoms/m3. The predeposition heat treatment is to beconducted...
- Q Leaf springs are commonly used in low-cost or high-stiffness vehicle suspensions, e.g. golf cars, light-truck rear axle.Consider a cold-drawn AISI 1040 flat leaf spring subjected to afluctuating loading condition of...
- Q As mechanical engineering explain the reason why an early airbagwas a failure, and the reason any system acquisition processes thatwere not followed that may have contributed to the failure.
- Q (H) Angle conversions. 2.47 deg = A rad. 3.72 rad=B deg. 3.67 rad=C rev. 3.0300 rad = D deg E min F sec. Round F to the nearest...
- Q 1. Using the equations describing the standard atmosphere, plotthe speed of sound (in m/s, ft/s and knots) in the altitude rangesea level – 32 km. You can use Matlab or...
- Q Design an electro-pneumatic circuit to control a double-actingcylinder via a 5/2 way singlesolenoid valve. The on switch is ofdetent type and when actuated, the piston will repeatedly extendand retract until...
- Q Part 2: MATLABExercise 1 (50 pts)Write a program that tells the user if a city of their choice isin a tropical, temperate, or polar region. Use the cities.txt fileprovided in...
- Q 1.What is the purpose of the diffuser section of a gas turbineengine, and under what principle does it operate?2.Why do some axial flow gas turbine engines use multiplecompressors?3.What happens in...
- Q Air undergoes a polytropic process in a piston–cylinder assemblyfrom p1 = 1 bar, T1 = 295 K to p2 = 7 bar. The air is modeled as anideal gas and...
- Q Q) Explain in brief, the importance of Energy Auditingand Energy Management. With the use of a case study, explain itssignificance at your workplace?
- Q 2. Define a process for finding a job. For what types ofendeavor does a well-definedprocess enhance performance?
- Q A Copper plate that is 588mm wide and 48 mm thick is to bereduced in a single pass in a two high rolling mill by using a321mm diameter roll. The...
- Q Describe the difference between a substitutionalsolute atom, an interstitial solute atom, and a vacancy. Discusswhether the stress in the material near the defect will be tensileor compressive
- Q Diagram a process for planning and cooking a family dinner. Doesyour process re-semble the generic product development process? Is cooking dinneranalogous to amarket-pull, technology-push, platform,process-intensive, customization, high-risk quick-build, or complexsystem...
- Q Re-derive the coefficient of pitching moment equation for theaircraft in the previous problem.Note: Use the corresponding freebody diagram and build-up method for the derivation.
- Q Differences in means1. Does quench water temperature affect average yieldstrength2. Does O-ring hardness affect average leak pressure3. Is the average pressure capacity of an air tank abovespecDifferences in variances1. Does...
- Q Your task is to take the above code, and insert comments (using the “%†symbol) next to each line of code to make sure that you know what every line...
- Q 15g of S are added to 100 g of chloroprene. What is the maximumfraction of crosslinks that can be obtained assuming only 12% ofthe crosslinking atoms are effective. B) What...
- Q use python.Consider 4 blocks with different masses mi connected by ropes of negligible mass. Three of the blocks lie on an inclined plane and the fourth lies in the direction...
- Q This question is taken from \"System engineering course \" pleaseanswer it Only if you're sure from your answer. and please useproper English language.Do politics play a role in all programs?
- Q A particle moves along a straight line with an accelerationa=2v1/2m/s2, where v is in m/s.If s = 0, v = 1 m/s when t = 0,determine the time for the...
- Q 1. Air enters a steady-state diffuser at T1 = 20 °C, P1 = 100kPaand leaves at P2 = 105 kPa. You may assume an adiabaticdiffuser and constant specific heats. Find...
- Q The AutoCAD interface that facilitates assembling multiplelayouts and views in a single location is A. Layer Translator. B.CAD Standards. C. Sheet Set Manager. D. Object Manager.
- Q In 1999, the 125 million dollar Mars Climate Orbiter crashedonto the surface of Mars due to a unit conversion mistake. Brieflyresearch this story and write a short, one or two...
- Q Hot combustion gases enter a gas turbine at 0.8 MPa and 0.538m3/kg at a rate of 2.1 kg/s, and exit at 0.1 MPa and2.29 m3/kg. Heat is lost from the...
- Q 1) Successful product development requires decision making in anenvironment free from constant change. TRUE or FALSE2) One of the most difficult aspects of product development isrecognizing, understanding and managing trade-offs....
- Q what does it imply if the efficiency of an engine isless than its corresponding carnot efficiency?.Describe two reallife effects that might cause this difference.
- Q Your task is to take the below code, and insertcomments (using the “%†symbol) next to each line of code to makesure that you know what every line does.clcclearclose allNMax...
- Q A pressure vessel is being designed to hold compressed methaneto fuel a liquid rocket motor at a maximum pressure of 50 bar. Ifthe methane is to be stored at 40...
- Q How (by what way) is each detail drawing connected with theassembly drawing of the design? (keep your answer brief andconcise, all lower cases)HTML EditorKeyboard Shortcuts
- Q Air with a dry bulb temperature 75 F and a wet bulb temperature65 F is at a sea level pressure of 14.7 psia. Using equations tocalculate (a) humidity ratio, (b)the...
- Q The tool in AutoCAD that allows you to adjust the properties oflayers in one drawing so that they match the properties of anotherdrawing is the A. Layer Transform. B. Properties...
- Q Home confinement: Device features that could potentiallyencourage communication and connection between the participant,device, and/or monitor? Â
- Q What is the future of mechanical engineering in drone?
- Q What is composite? Explain comparison between metal matrix andceramic matrix composit
- Q Write a program to run on your Arduino and PortMaster board thatwill sequentially turn on and off the LED segments, so it resemblesCylon eyes (https://youtu.be/UajcgzK2shQ). Use themillis() construct shown in...
- Q Five lbs of propane is contained in a closed, rigid tankinitially at 80 lbf/in.2, 50°F. Heat transfer occursuntil the final temperature in the tank is 0°F. Kinetic andpotential energy effects...
- Q The drive shaft of a dump truck is constructed of 3.5†OD x 1/4â€wall round tubing made of ASTM A242 steel. The driveshaft is 65â€long and is subjected to 500...
- Q Use a x2 test to test the claim that in the given contingency table, the row variable and the column variable are independent. 1) Use the sample data below to test...
- Q Ina DVE Viscometer experiment, what does the Torque percentage shownon the screen signify?Course: Fluid Power Technology
- Q A piston–cylinder assembly contains propane, initially at 27°C,1 bar, and a volume of 0.1 m3. The propane undergoes a process to afinal pressure of 4 bar, during which the pressure–volumerelationship...
- Q Five kmol of oxygen (O2) gas undergoes a process in a closedsystem from p1 = 50 bar, T1 = 170 K to p2 = 25 bar, T2 = 308 K.Determine...
- Q list and explain the principles of behavior-basedsafety and why an employer should use this concept in theworkplace
- Q Refrigerant 22 undergoes a constant-pressure process within apiston–cylinder assembly from saturated vapor at 5.0 bar to a finaltemperature of 25°C. Kinetic and potential energy effects arenegligible.Evaluate the work and the...
- Q A Brinell hardness tester is used to determine the hardness of1/2\" thick steel plate. The specifications for the steel requirethat the steel have a tensile strength between 125 ksi and...
- Q How many tons of refrigeration is required to cool 50 GPM ofliquid from 110 F to 50 F ?The liquid has a specific heat of 1.40 BTU/lb F and density...
- Q What causes a percent error between the calculated value (doneby a computer program like ANSYS) and the the theoretical value(done on paper) for bending stress?
- Q An ideal Otto cycle uses air as the working fluid; its state atthe beginning of the compression is 120 psia and 60°F, itstemperature at the end of the combustion is...
- Q What does a Southwell plot tell us about columnimperfections?
- Q In your opinion, how will the \"car of the future\" shape theautomobile industry?As a strategist, what would you recommend to industry's leadersin order to sustain in an impending changing environment?http://fod.infobase.com.db16.linccweb.org/p_ViewVideo.aspx?xtid=40925
- Q How do you solve this?A thin-wall pressure vessel is shown below. Internal diameter=d,wall thickness=t.In addition to the internal pressure p (p=100 psi), a torque Tis applied. Assume d=20 inch (r=10...
- Q Thermodynamics: You have a (mostly) insulated carafe in whichyou store your coffee. Coffee can be modeled as saturated water forthis problem. The internal volume of your carafe is 1 L...
- Q he path of motion of a 7-lb particle in the horizontal plane isdescribed in terms of polar coordinates as r = (3t + 1)ft and θ = (0.5 t2 −...
- Q Material Science questionRank the following elements with regard to how rapidly they willdiffuse into FCC Iron (fastest to slowest). Indicate the diffusionmechanism for each.1) Mo2) C3) Cr4) W
- Q A circular shaft, 100 mm diameter is subjected to combinedbending moment and torque, the bending moment being 3 times thetorque. If the direct tension yield point of the material is...
- Q Explain the following observations, using diagrams to illustrateyour answer wherever possible:(a) Steel nails used to hold copper roofing sheet in positionfailed rapidly by wet corrosion.(b) The corrosion of an underground...
- Q Describe a typical polymer molecule in terms of its chainstructure and repeat units. Use a specific example polymer otherthan polyethylene to illustrate the ideas
- Q A five metre tall, 1 m diameter Flettner rotor mounted on asmall cargo vessel, spins at 50 rpm in a steady beam breeze of 15knots. What is the thrust generated...
- Q The origins ofstiffnessExplain therelationship between the cohesive energy of bonding and theobserved stiffness of individual bonds.How does the stiffnessof individual bonds in a solid affect the overall stiffness andelastic modulus...
- Q Describe a future innovation that you envision may occur duringyour Mechanical Engineering career (next 40 years), and what yourengineering role would be in its development and/or production?
- Q (Amorphous vssemi-crystalline)Using words andvisuals, describe the amorphous and semi-crystalline arrangementsof polymer chains when forming a solid. Using examples of specificpolymers, explain why some types of polymer chains do not readilyalign...
- Q A signal has the functional form f(t) =5sin(40Ï€t) and is sampled at a rate of30 samples per second. What false alias frequencywould you expect in the discrete data? What sampling...
- Q A railway buffer consists of a pair of cylinders placed parallelside-by-side. Oil is present in each cylinder and is arranged tobypass through ports, thereby producing a damping resistance, whichis proportional...
- Q Explain the procedure to generate a cylinder placed on top of arectangular block using any CAD software.
- Q What happens to an inventor within an organization,whoseinvention is not successfully commercialized? Have you seenexamples?
- Q Consider the brass alloy the stress-strain behavior of which isshown in the Animated Figure 6.12. A cylindrical specimen of thisalloy 19 mm in diameter and 177 mm long is to...
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