Mechanical Engineering question and answers for August 07, 2023
- Q Using MATLAB, plot the following curves for the crank anglerange of 0-360:a. For an engine that has R=3.5 and L=110 mm, plot the pistonspeed Sp at engine speeds of 500...
- Q What kind of government policies in US are hurting buildingretrofitting for energy conservation?
- Q Q1 . Design the rectangular key . Determine the shaftstrength factor if the length of the key should not exceed 12 cm.used if need power 1kw velocity 500rpm ultimate stress...
- Q ********JAVA************This program deals with graphs and path-finding withinthem.write a program which allows the user to enter multiple levels of atext, consisting of a'start', an 'exit', 'walls', and 'floors'. The letter...
- Q 6 mm diameter power line carries 40 A current and the resistanceof one meter is 0.02 ohms. Find the surface temperature of the wireon a day when the wind temperature...
- Q Please refer to the article titled as “ImprovingOccupational Safety and Health in Constructionâ€, published in TheIngenieur, Vol. 69 January – March 2017 by the Board of EngineersMalaysia. Please refer to...
- Q During an experiment to simple vapour compresion cycles in theHVAC lab at Faculty of Engineering, Rabigh , the following data areobtained:-• The temperature enter to the compressor is \"saturated vaporcondition\".•...
- Q In a spring controlled governor of the Hartung type, the lengthsof the horizontal and verticalarms of the bell crank levers are 100 mm and 80 mm respectively.The fulcrum of the...
- Q Arigid tank contains air at 500 kPa and 190 °C. As a result of heattransfer to the surroundings, the temperature and pressure insidethe tank drop to 64 °C and 400...
- Q A polytropic process (n= 1.25) compresses air from 0.3m3 at 22 0C and pressure of 125 kPato   0.15 m3. It is then expanded atconstant temperature to its original volume.Sketch the P-V...
- Q (a) As an engineer who has just finished takingengineering materialscourse, your first task is to investigate the causes of anautomobileaccident. Your findings show that the right rear wheel has brokenoffat...
- Q The parking lot of a shopping center is square ofsides a, delimited by sills of height h, and the entrance to theparking lot is width c. During the last rain...
- Q I need a report this report will includes the following:1. Types of pumps and their uses, depending on the type offluid, the amount of liquid, the location and the friction.2....
- Q The ppf of the face for the BCC unit cell is greater than theface of the SC unit cell.is it true or false, justify your reasoning.
- Q A compressor is to run at 250 rpm and requires 75 kW. The driveis provided by V-belts from an electric motor running at 750 rpm.The pitch diameter of the pulley...
- Q Consider a combined gas-steam power cycle. The topping cycle isa simple Brayton cycle that has a pressure ratio of 7. Air entersthe compressor at 15 ºC at a rate of...
- Q A combined gas turbine–vapor power plant has a net poweroutput of 200 MW. Air enters the compressor of the gas turbine at300 kPa, 1200 K, and is compressed to 1000...
- Q Q5 (a) Compare the Direct and Indirect extrusion works with theaids of diagram.(b) In metal forming, there were temperature ranges usedincluding cold, warm and hot working.(i) Compare between Hot and...
- Q Why is the effect of a rotating thin cylinder compared to thecase of an internally pressurized thin cylinder?
- Q Consider four identical circular Euler columns under acompressive axial load with a) one end fixed and the other pinned(or hinged or simply-supported), b) both ends fixed, c) both endspinned (or...
- Q Under normal driving conditions, car tires can generate afiction coefficient of approximately 0.7. Antilock braking systemscan increase the effective coefficient of friction to as high as1.0. For car traveling 65...
- Q 1. Suppose a hollow cylinder made of SS 316 with thethermal conductivity of 16.26 W/m K, has inner diameter andthickness of 0.4 and 0.05 m, respectively and length of 1...
- Q A 3 kg collar slides with frictionless along a vertical rod isshown in below Figure. Thespring is under-formed when the collar A is at the same elevationas point O. The...
- Q Write the heat conduction equation (without flow in and out) incartesian coordinates for the following case:1. Steady-state, 1-D, without heat generation (2 points)2.Transient, 1-D, without heat generation (2 points)3.Transient, 3-D,...
- Q state the reason why the flexibility influence coefficient of anon constrained multi-degree vibration is can not be determined
- Q Foil PlatesPlace foil plates on the Van de Graaf generator face down. Whenthe generator is on, what happens to the plates? Repeat theexperiment with the plates facing up. Do plates...
- Q 1-Define: [progression ratio (φ), percentage increase (δn), speedrange (Rn), diameter range (Rd) and cutting speed range (RV)?
- Q Question 4A bolt weighting 10 N is accidently dropped down a 4 m longvertical cast-iron pipe which is closed by means of a rigid flangeat the end. Calculate:4.1Â Â Â Â Â Â The instantaneous...
- Q Create a program using Matlab that can solve Three DimensionalSpace; Vectors, Partial Derivatives or any of the topic in calculus3; show 5 examples please thankyou!! just use matlab for thesolution...
- Q A steady two-dimensional laminar fully-developed flow downwardbetweentwo fixed parallel plates inclined at 50\" with horizontal isshown in figure. Thepressure gradient in the direction of the flow is -3935 N/m' perm....
- Q Mention & Draw/show devices, machines, or applications which 1.Right hand screws are used and 2. Left hand screws are used(mention at least 5 of each)
- 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 an insulating wall 16cm thick has one face at 600degree celsius while the other is at 100 degree celcius. Thethermal conductivity of the material is given by K=0.078(1+17.95*10 exponent -...
- Q If the market value of a telecommunications share is $287.95, calculate the year-end dividends that it should be able to pay in perpetuity if money is worth 4.75% compounded semi-annually.
- Q Calculate relative frequencies for; Overall Type of Calls, CallQuality and Call Errors.Calculate the following probabilities:CLM Error and AM ShiftCOV Error and PM ShiftSAV Error or AM ShiftGiven that the call...
- Q A building has a calculated cooling load of 10 tons, of which2.5 tons is latent load. The space is to be maintained at 72 F dband 50 percent relative humidity....
- Q A closed rigid cylindrical vessel (internal diameter = 2 ft andinternal height = 10 ft) has R-134a at x = 0.95 and 40 oF. Thevessel is heated up to 100...
- Q For ethanol liquid with 50% excess of air. Determine adiabaticflame temperature
- Q What are examples of the five properties associated withforce?1. Direction:2. Orientation:3. Magnitude:4. Point of Application:5. Line of action:
- Q Why is the mechanical strength of the HAZ next to the fusionline of a heat treatable      aluminum alloy much lowerthan that of the base metal?Why does the mechanical strength of...
- Q Summarize 3 important considerations in designingcircuit.Discuss the importance of pipe selection based on theimportant design consideration.As a mechanical engineer, design a hydraulic circuitthat has linear force output. This linear force...
- Q According to the valve adjustment diagram in gasolineengines, explain the following by stating on the figure. Intakevalve opening, before 15o (top dead spot), Intake valve closingafter 47o (bottom death spot),...
- Q Aspring cannon has a spring constant of 350 N / m and the bulletweighs 10 grams. What is the maximum height, measured above theequilibrium position of the spring, that the...
- Q 1. 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 At the beginning of the compression process of an air-standardOtto cycle, p1 = 1 bar andT1 = 300 K. The compression ratio is 8.5 andthe heat addition per unit mass...
- Q Moist air at 55 oF dry bulb temperature and 40% relativehumidity is first heated through a heating coil. The air is thenadiabatically humidified by saturated water vapor at 4.5 psia....
- Q 1.Write the Bernoulli equation and state all the assumptionsused in its derivation.2.Write the vector form of the conservation of momentum equationfor a control volume that is moving with a constant...
- Q An air-conditioning plant is designed to maintain a room at acondition of 20oC dry bulb and specific humidity 0.0079 when theoutside condition is 30oC dry bulb and 40% percentage saturationand...
- Q Composites:Properties of a material that make it useful for engineeringusesTypical applications for the materialA brief discussion of how the material is producedAdvantages of the material in its typical usesDisadvantages of...
- Q Discuss the variation of tensile strength, elongation, Vickershardness and fracture toughness with C (carbon) % for normalisedcarbon steels. Write 500 words
- Q what are the four different mechanisms in a steam engine?explain them.
- Q ABCD is a four bar chain with link AD fixed. The lengths of thelinks are AB = 62.5 mm;BC = 175 mm; CD = 112.5 mm; and AD = 200...
- Q (a)In a couple of sentences with clear annotated sketches explainthe following terms:lobe separation;valve overlap;curtain area.
- Q A horizontal jet of oil (SG = 0.6) strikes a curved blade thatturns the flow through an angle of 1800. The jet area is1000 mm2 and its speed from a...
- Q Air cargo has experienced a renaissance in the last severalyears because of skyrocketing international e-commerce amidheightened consumer expectations and reduced oil prices.Additionally, airfreight has become increasingly competitiveagainst other modes of...
- Q The sample measurements for Aluminum, Copper and Nylonhave the same length, width, and thickness. While the length is76.5mm and the width is 19.5mm, the thickness of these samples areabout 0.127...
- Q A 4500 lb SUV is traveling at 65 mph when it strikes a stagedattenuator designed to produce three different energy dissipationrates. For the first 6 ft, the attenuator produces a...
- Q You have just joined the design and development group atPanasonic, Inc. The first task you are given is to work on thedesign of a thermal system to anneal TV glass...
- Q Discuss the processes for manufacturing components ofcomplicated shapes in larger quantities.
- Q State the importance of using superheaters andreheaters in standalone steam powerplants and in combined cycle powerplants. Make a short comparisonplease compare them to each other.
- Q what precautions are taken when transferring fuel oil from onedouble bottom tank to another double bottom tank on a ship?
- Q Derive the transformation equations for normal stress and shearstress acting on the inclinedplane (for 2D case)
- Q Starting with a spring index of C = 10, design a compressioncoil spring of 302 stainless wire with squared ends. The spring isto deflect y = 50 mm, for an...
- Q Hello! I have some questions related to using Ansys Fluent, Ihave read the instruction of Ansys Book , but I still do notunderstand clearly, can you help me? They are...
- Q What methods can be used in gearwheel productionwithout chip removal?
- Q Develop a marketing plan for a hypothetical Bed and Breakfastlocated in Atlanta, Georgia. To make the project flexible, you canmake all the necessary assumptions regarding the number of rooms,occupancy rate,...
- 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 tank with a volume of 0.6 m3 contains 12 kg ofrefrigerant-134a at -220C. Calculate the pressure of therefrigerant (a), (b) the total internal energy (kJ) and (c) thevolume occupied...
- Q what are the methods to evaluate the effect of high-speed and highdynamic load on volumetric errors at the tool center point.
- Q Write a 5 page report on the applications of the mechanics offluid in engineering systems and processes.Include examples of suchsystems and processes.
- Q Steam at 100°C is blown into an airstream at 21°C dry bulb, 50%saturation (Relative humidity), at the rate of 1 kg steam/150 kgdry air. What is the final condition and...
- Q Find the literature review of using a flexible drinking strawand a ruler, explain how to measure the water flow velocity in ariver?
- Q Write an introduction about performance characteristics of heatpumpWrite clearly
- Q Derive the expression for the Euler’s formula (the criticalload) for pin-ended columns.
- Q Which of the following describes the process by which thesurface area of a component is hardened in such a way that leavesthe core of that component softer and tougher?Age hardeningCase...
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