Mechanical Engineering question and answers for August 15, 2023
- Q Crude oil is rarely produced alone as it is generallycommingled with water that creates a number of problems during oilproduction. Emulsion is a dispersion of droplets of one immisicibleliquid into...
- Q choose the best answer:A- An ideal gas enters an adiabatic nozzle at 10 m/s and exits at 300m/s. If the incoming specific enthalpy of the gas is 2,111 kJ/kg,what is...
- Q Could anyone tell me the best you tube channel or freeUnacademy tutor(India) for best learning of Shear force and bendingmoment diagram along with deflection?If I satisfied with answer, I would...
- Q A generous amount of gel is applied to the surface of the windowof an ultrasound probe prior to its use. The window is made of apolycarbonate material of density Ï...
- Q Design a parallelepiped-shaped float to be constructed of apolymer with relative density Sg = 0.4, so that it is able tosupport you and your co-worker on top and stay out...
- Q project question:'Design and build a thrust measurement system for model aircraftengines '1- Questionsi) sketchii) ideasiii) planiv) introduction, background, theory , abstract etc...
- Q Hot water from a boiler of power plant are discharged through a0.2-m-diameter, thin-walled pipe with a velocity of 3.5 m/s. Thepipe passes through a room whose air temperature is 3°C...
- Q 2 kilogram of R-134a fills a 0.14-m3 weightedpiston–cylinder device at a temperature of –26.4°C. The containeris now heated until the temperature is 100°C. Determine the finalvolume of the R-134a.
- Q Develop and explain each step thegeneral equation of heat transfer by conduction ina constructive way starting from an element general differential inthe cartesian coordinate system and then reduce to get:1)...
- Q Explain the difference between the principle ofimpulse & momentum approach and the conservation of impulse& momentum approach.
- Q Fully developed (both hydrodynamic and thermal) laminar flow ispushed through a thin-walled circular pipe of diameter 13 mm. Thefluid flows through the pipe at a velocity of 0.1 m/sec, has...
- Q As a lubricant engineer, you design a new friction modifier asan additive for synthetic oil to reduce friction between twosurfaces. Describe the content of your new friction modifier andmechanism to...
- Q Thevolume of states 1, 2 and 3 of a diesel cycle are 157, 13 and 23fr^3 respectively. Determine the hp of the engine if the heat inputis 550 BTU/min
- Q Course Title: BUSINESS DYNAMICS: SYSTEMTHINKING AND MODELLING FOR A COMPLEXWORLDÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â RequiredWhat SystemDynamicsMeaning of feedback,types, with examples
- Q Ai inventor proposes a four -stroke cycle running on helium. Theengine has a compression ratio of 8 and maximum operatingtemperature of 1,500 K. The atmospheric conditions are temperatureof 300 K...
- Q For the stress data given below with the nearest error of 1:27-17-11-24-36-13-29-22-1823-30-12-46-17-32-48-11-1818-32-26-24-38-24-15-13-1318-21-27-20-16-15-37-19-19a) Construct a frequency distribution table.b) Construct the three types of statistical graphs.c) Determine the (1) Mean, (2) Median,...
- Q Please Do it Clearly with each step and FASTUse music wire to make a series of springs with wire diameters[0.075â€, 0.080â€, 0.085â€, 0.090â€].Each spring should have a free length of...
- Q 1 A steel helical spring carries acompressive load of 32.4 pounds at a deflection of 0.25 inches.Maximum stress is 73240psi. The spring has 1.5 end turns. Calculatethe value of c...
- Q Flue gases from an incinerator are released to atmosphere usinga stack that is 0.62 m in diameter and 10.0 m high. The outersurface of the stack is at 45°C and...
- Q An ideal refrigeration cycle utilizes R-134a as a working fluid.If the fluid enters the compressor as saturated vapor at 6 C andenters a throttling valve as a saturated liquid at...
- Q Multiple Choice1. Which of the following is not used to define a chamfer?a. Angle and a distanceb. Distance and distancec. Two angles and a distance2. Which tool is used to...
- Q A trapezoid-shaped potato with base lengths of 1.5 cm and 2.0cm respectively and a height/thickness of 0.5 cm was dried at atemperature of 70 oC in a convective oven for...
- Q A high performance 4 stroke supercharged gasoline engine isbeing designed. The target specifications are as follows:IMEP: 25 bar at peak powerbsfc:Â Â Â 237 g/kWhisfc:Â Â Â Â 211 g/kWhBore to stroke ratio:Â Â Â 1.1Number of...
- Q Please write an introduction about materials absorbingsound.No plagiat please
- Q My device is an AIR COMPRESSORChoose the working fluid (substance) for your model deviceChoose the inlet substance conditions such as temperature,pressure, velocity, mass flow rate or volume flow rate, quality,etcChoose...
- Q Consider the Rankine power cycle using vapor and liquid.a: Explain what kinds of problems the Carnot Vapor Cyclehas.b: Draw a T-s diagram for the ideal Rankine cycle and label eachprocess...
- Q For ethanol liquid C_5 H_5 O H with 50% excess of air. Determineadiabatic flame temperature
- Q A closed container with a volume of 2 m3 contains 4 kgof saturated liquid and saturated steam mixture water at 200 kPapressure. Heat is given from the ambient temperature of...
- Q A renowned automotive company has 1798 cc inline-4 enginesworking on Atkinson cycle (by late closing of intake valves duringcompression stroke). It has minimum compression ratio of 6.5:1 andexpansion ratio of...
- Q AERODYNAMICS5- What is the effect of a headwind which is 20% of the landingspeed on a landing distance?6- What is the effect of a tailwind which is 20% of the...
- Q An incompressible fluid oscillates harmonically (V = V0 sin(wt),where V is the velocity) with a certain frequency in a 19 cmdiameter pipe. A 1/4 scale model is to be used...
- Q Provide a brief overview of geoengineering technologies andcomment on why they are not more aggressively investigated asclimate change solutions?
- Q Discuss the requirements of avionics equipment with respect tofollowing aspects.(a) Environment(b) Weight(c) Reliability.
- Q In an interview, you were asked to prepare a short essay toelaborate the integration process in handling limited resources inengineering project. It requires you to reflect yourself in theProject Manager...
- Q Explain how air compressor follow both the first and second lawsof thermodynamics?
- Q A piston-cylinder device initially has a volume of 1.5 m3containing steam at 300 kPa absolute and 150 oC. It is then heatedso it expands at constant pressure until it reaches...
- Q A solar-thermal plant is used to produce power. A molten salttransfers heat to a non-ideal Rankine cycle to produce electricityfrom a turbine. The molten salt has an average temperature of...
- Q Find a word, number or name.The only restrictions are that itmust have at least four characters, and must include at least onehorizontal, vertical, angled, and curved segment each  [example: LOVE ].Find...
- Q Does systematic error vary during repeated readings? What is therelationship between systematic error and the sample size?
- Q Find a word, number or name.The only restrictions are that itmust have at least four characters, and must include at least onehorizontal, vertical, angled, and curved segment each  [example: LOVE ].Find...
- Q What is the difference between SMC-R50 composite and fabricreinforced composites?I know SMC uses random fiber orientation, is there a randomfiber fabric?Thanks
- Q Water is discharged from a pipe outlet at a rate of 60l/s at120.8 kPa absolute pressure. All pipes are 15 cm in diameter with atotal length of 200 m. The...
- Q If a golf ball were dropped from a significant height and theforce of Drag is modeled by Fd=0.0057*V-0.0106, where V is thevelocity in m/s the Fd is the force of...
- Q The stream function ?? in a two-dimensional flow field is givenas ?? = 4?? − 3?? + 7???? (a) Prove that this flow field isirrotational and that it satisfies the...
- Q Why are the tolerance characteristics categorized asforcedfitting and loose can't represent shape and position tolerance?
- Q 1. Control charts are usually expressed in terms ofaverage values ​​and their dispersion.Give an explanation (and the reason) about the condition of aproduction system that isstated in the control chart2....
- Q 2. Surface roughness of a machining product is animportant factordetermine the quality of geometry. Explain the following:a. Explain how the surface roughness measurement tool works!b. Explain the concept of measuring...
- Q One kilogram of air is taken through a constant volume cycle. Atthe commencement of the adiabatic compression, the pressure andtemperature are 103 kN/m2 and 1000Crespectively. The adiabatic compression has a...
- Q At the beginning of compression of an ideal Diesel cycle the gashas a temperature and pressure of 400C and 90kN/m2, respectively. The volume ratio of compression is16:1. The maximum temperature...
- Q Consider a case in which you have a material that support acertain stress at 75oC and you have several candidatepolymers for which you need to determine the Tg using DSC...
- Q A cooling plant adopted a two-stage cascade refrigeration systemto meet the required cooling load. In both upper and lower cycles,the refrigerant leaves condenser as saturated liquid and enterscompressor as saturated...
- Q Evaluate the proportion of the heat of fuel carried away by theflue gases for the following data: Coal with Calorific Value of 30MJ/kg has composition by mass as follow: C=...
- Q A cooling plant adopted a two-stage cascade refrigeration systemto meet the required cooling load. In both upper and lower cycles,the refrigerant leaves condenser as saturated liquid and enterscompressor as saturated...
- Q Taichung thermal power station wants to change their steamgenerator with a new steam generator that has a better efficiency.The existing steam generator operating with Rankine cycle withreheat and has a...
- Q Evaluate the proportion of the heat of fuel carried away by theflue gases for the following data: Coal with Calorific Value of 30MJ/kg has composition by mass as follow: C=...
- Q In an ideal standard dual cycle, the pressure and temperature atthe beginning of compression are 1 bar and 47°C, respectively. Theheat supplied in the cycle is 1250kJ/kg, two third of...
- Q A tractor is pulling a drawbar tillage implement at a groundspeed of 1.6 m/s. The total rear axle static load is 35 kN, thewheelslip is 0.1, and the value of...
- Q Taichung thermal power station wants to change their steamgenerator with a new steam generator that has a better efficiency.The existing steam generator operating with Rankine cycle withreheat and has a...
- Q Explain and give your opinion on solidification process fromnucleation until solidified metal.
- Q It is often stated that the refrigerator door should be openedas few times as possible for the shortest duration of time to saveenergy. Consider a household refrigerator that have an...
- Q A 10.8 kg of nickel initially at 202 ∘C is dropped into aninsulated basin containing 23.6 kg of water initially at 27.8 ∘C.Assume that he water does not undergo any...
- Q Explain the difference between the terms peak and residual shearstrength in relation to loose sands and dense sands.
- Q Understand the impact of professional engineering solutions insocietal and environmental context and demonstrate knowledge of andneed for sustainable development
- Q Identify basics and opportunities in entrepreneurship related toengineering
- Q Please type the working principles and application areas of aventuri tube in a few paragraphs (5 or 6) with examples. If thereare any direct quotes from a resource, please use...
- Q Solve Q1 and Q2 by matlab :Q1: Based on what you learned about thermophysicalproperties library, calculate the density of seawater at25°Cand Pressure 1 MPa where the salinity is changed from...
- Q A 15kW electric motor, which is running at 43 rev/s, is used todrive a crusher which operates 24 hours per day. An engineer hasspecified 212 mm and 315 mm pitch...
- Q Assuming we are deciding to manufacture socks that are made bycotton surrounded by nylonDefine a predictive maintenance plan for the components of yourplant.a. Describe the components that will be under...
- Q 1. Suppose there a joint where the bolts have a stiffness of1638 kips/in per bolt and the members have a stiffness of 10930kips/in per bolt. The bolts are ½-13 UNC,...
- Q A four-stroke engine is running on methane with an equivalenceratio of 0.8. The air and fuel enter the engine at 250 C, theexhaust is at 5270 C, the heat rejected...
- Q Describe the design criteria for the next combustorsections.1.-Diffuser2.-Primary zone3.-Intermediate Zone4.-Dilution Zone5.-Swirler6.-Primary zone holes7.-Cooling slot
- Q 1.-Define the combustor loading parameter.Why is the exponential factor different to ideal scenario?
- Q A shock wave in air exists in a de Laval nozzle wherethe cross-sectional area is 130cm2.The inletMach number, area and static pressure are 0.35, 210cm2 and 350 kPa. Theexit area...
- Q For the flow over a circular cylinder discuss the differencesand similarities between the potential flow solution and the realviscous flow.
- Q explain the consideration in the design of thedimensions of formed and the parallel key having rectangular cross-section
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