Mechanical Engineering question and answers for August 11, 2023
- Q Problem 4. Explain to high school level students aboutstreamlines, streaklines, and pathlines. Please explain byinserting a figure if necessary.å•é¡Œï¼”．æµç·šã€æµè„ˆç·šã€æµè·¡ç·šã«ã¤ã„ã¦é«˜æ ¡ç”Ÿã«ã‚ã‹ã‚‹ã‚ˆã†ã«èª¬æ˜Žã—ãªã•ã„。必è¦ã«å¿œã˜ã¦æŒ¿çµµ(Figure)を入れã¦èª¬æ˜Žã—ãªã•ã„。
- Q A rigid tank A is connected to a spherical and elastic balloonB. Each contains air at an ambient temperature of 25 ° C. Thevolume of tank A is 0.1 m3...
- Q 7. Draw one stress strain diagram for ductile material andindicate the elastic, plastic region, toughness and resilience?-Explain the mechanism of necking in details?9. What is the unite for stress and...
- Q 3.- In an industrial process, a concentric tube exchanger isused to cool 1800 Kg / hr of ammonia from 80 ° C to 35 ° Ccirculating through the annular space,...
- Q A power plant operates on a regenerative vapor power cycle withone open feedwater heater. Steam enters the first turbine stage at12 MPa, 560°C and expands to 1 MPa, where some...
- Q Determine the specific internal energy (in kJ/kg) of water at400C and 20 MPa.(Please show how units cancel)!
- Q Question 2:“The RMS Titanic was an Olympic-class passenger liner, launched forthefirst time in 31 May 1911. The ship’s steel was “probably the bestplaincarbon ship plate of the timeâ€. Nevertheless, shortly...
- Q Manual Labor in Production Systems Is there a place for manuallabor in the modern production system?ï‚´ Answer: YESï‚´ Two aspects: 1. Manual labor in factory operations2. Labor in manufacturing support...
- Q In Case of Gas power plant, Clearly Identify the at least 12Important parts. Explain the kind of fuel is used to run the gaspower plant. Compare between the Gas power...
- Q Discuss how the fatigue resistance of a part or material can beimproved.Its for 5 marks so please no short answers.
- Q Consider an automobile engine which operates on the ideal Ottocycle. In this engine, air is compressed with a compression ratioof 10. At the beginning of the compression process, air is...
- Q Consider a diffuser in which air flows steadily. At the inlet ofthe diffuser the pressure, the temperature and the velocity of theair are 100 kPa, 110oC and 175 m/s, respectively....
- Q make a scheme or illustration of the precipitationhardening process for aluminum alloys and explain each step
- Q Vibrations Question in Mechanical Engineering:Vibrating SystemStability QuestionDescribe in as much detail as possible what is meant by a stablevibrating system and state the condition which must be satisfied toachieve stability.
- Q Problem 1. Explain the definition of the unit of quantity, thedefinition of SI, and the basic unit of SI. Also, select one of theSI basic units and explain the definition...
- Q Design a robot that can support humanity from the spread ofCOVID-19 . Draw suitable diagrams and focus your explanationtowards the robot subsystems.
- Q Research question: How is ceiling welding possible? (It welds in the overhead (overhead) position, how can the droplets that dissolve from the electrode tip not be lowered downward by gravity...
- Q What could be some of the reasons for the discrepancies betweenthe Hilpert’s equation or the Churchill & Bernstein’sequation.
- Q Superheated vapor enters the turbine at 10 MPa, 480°C, and thecondenser pressure is 7.5 kPa of a steam Rankine power cycle.Isentropic efficiencies of the turbine and pump are 84% and...
- Q Analysis and application of Coanda effectProve that the self-induced velocity of source segment at itscenter point only has normal component and equals to λ/2
- Q Manufacture methods course:working process which will increase strength of metals? Draw theprocess.explain mechanical mechanisms.objective in real life.
- Q 1 kg of saturated steam at 1000 kPa is in a piston-cylinder andthe massless cylinder is held in place by pins. The pins areremoved and the system suddenly and adiabatically...
- Q I need to write an essay about the following:Suppose you are in job interview of your dream job and the questionasked to you ''OUT OF ALL CANDÄ°DATES ,WHY WE SHOULD...
- Q List and explain the measuring elements (stages) of a dialindicator starting with the primary sensing element
- Q how do you relate the air fuel ratio to the equivalenceratio, and the ‘lambda’ ratio
- Q Briefly explain the difference between point source and nonpointsource water pollution? Provide one example each
- Q An ideal Otto cycle has a compression ratio of 8. At thebeginning of the compression process, air is at 95 kPa and 27°C,and 730 kJ/kg of heat is transferred to...
- Q A shaft in a mechanical system is manufactured from anacetal polymer and must have a minimum life of two years. If theshaft length is 50cm and it supports a load...
- Q 1- Who is the inventor of air condition, and what year was thefirst modern air conditioning produced?2- Explain the the Combined Gas Law and 2nd law ofthermodynamics briefly.3- Explain the...
- Q what are head pump, head turbine and head loss and theirformulas?
- Q Thermal propertiesA bar has an initial length of 100 mm at roomtemperature of 27oC. The tensile test indicates that the bar yieldswhen it reaches is the stress level of 145...
- Q Calculate the torque M which the engine of the pickuptruck must supply to the rear axle to roll the front wheels overthe curbing from a rest position if the rear...
- Q Describe one application where a biodegradable polymer has beenused, and contrast this to an application where a biostable polymerhas been used. Your answer should be a comprehensive account ofeach application,...
- Q A drunk man walking simulationA drunk man stands at origin. There is a cliff at x=10 and home atx=-10. He takes steps randomly left and right. Each step has theprobability...
- Q One of the major problems that railway industries havefaced since the earliest days is the prevention of service failuresin running rail. As is the case will all modes of high-speedtravel,...
- Q Explain the equations of1) coherency hardening2) modulus effect3) stacking fault energy4) order hardening5) surface hardening of PRECIPITATION HARDENING. (Advancedmechanical behavior of materials)pls do answer correctly!
- Q Imagine the CEO of a software house asks you to make a systemthat automates the SDLCprocess. Based on the initial requirements, you were successfullyable to make a prototype thatcaptures almost...
- Q Identify each of the following as either true or false regardingthe professional responsibilities of a design engineer.a) Your main responsibility is to satisfy the needs of youremployer in a competent...
- Q write a fortran code on helical transcriticalcompression tube used in pulse tube cryocooler using R407refrigerant.it is different than already replied question onchegg. please dont copy paste that answer i want...
- Q MAKE A PROCESS FLOWCHART :PROCEDURE:Pattern MakingUsing try square check the perpendicularity of the woodUsing try square and steel ruler check the dimension of thewood if it is suitable for ourdesign...
- Q Please make sure to display your thought process? It isimperative to be able to follow how the answer was deduced.Please be as thorough as possible. Please address all partsof this...
- Q USE EXCEL OR MATLAB IF YOU NEEDGiven the dry-bulb temperature, Tdb andrelative humidity, Φ, the wet-bulb, Twbtemperature may be calculated from the psychrometric equation(Jones, 1994):PvsΦ – Pss =PatmA (Twb-Tdb )                                             (1)Use...
- Q Explain the difference between parabolic dish and trough bydrawing both the schematics, Discuss which one is better andwhy?Neat and clean schematic diagram of both.
- Q How to make a PERT Chart on Excel with example project?
- Q 1. Suppose there a joint where 13 bolts (M14 x 2, ISO 9.8) areon a 200 mm bolt circle. The bolts are zinc-plated and installedfor permanent installation. The maximum total...
- Q A reheat Rankine cycle operates with water as the working fluid.Steam enters the first turbine at 8 MPa and 450â—¦C and exits at 0.8MPa. It is then reheated at 400â—¦C...
- Q Assume you are working on an ideal gas-turbine cycle that hasthree stages of compression with intercooling and three stages ofexpansion with reheating at 100 kPa and 290 K. This system...
- Q In a thermofluids lab, a student is analysing a prototypesingle-pass cross-flow heat exchanger used to cool water from 90oCto 60oC by transferring its heat to an air stream with an...
- Q State 1 of an Air-Standard Otto cycle (prior to compression) hasT1= 290 K, p1= 0.911 bar and V1= 5.5 litres.If the air is compressed with volumetric compression ratio rv=7.6, determine...
- Q An insulated, rigid vessel is initially empty (evacuated).However, it is connected to a steam line that is maintained at 200psia and 745 ∘ ∘ F. The valve is opened until...
- Q Due to the Covid-19 problem, Hamdin needs to measure a perimeterof a lake to build afence. He asked Marzu, Wahib and Usman to run the measurement andreport to himimmediately. Marzu...
- Q A three-dimentional flow velocity can be measured by usingvarious method.a. Name two devices that use a probe for the three-dimentionalflow velocity measurement..b. Name two sophisticated devices without a probe usage...
- Q b) A three-dimentional flow velocity can be measured by usingvarious method. Please name two devices that use a probe and twosophisticated devices without a probe usage for thethree-dimentional flow velocity...
- Q )Explain in general in which area you would apply similarityconcept along your career as a mechanical engineer. How will itbenefit you and your organisation.
- Q A steam power plant operates on a regenerative Rankine cycle.Steam enters the turbine at 6 MPa at 700 ºC and the condenser at 10kPa. Turbine has isentropic efficiency of 85%...
- Q If the measured power is 18.5 watt, rotational speedis 245 rpm, radius R of inner cylinder is 72.5 mm, thickness ofliquid is h1 = h2 = 2.35 mm and the...
- Q What is the difference between the application of Teamcenter andTechnomatix software?
- Q Question1) A motor shaft is subjected to 4 kN axial load and 2kN radial load. shaft rotates 800 rpm and its roller bearing haslh=10000 hours working life.Choose the single row...
- Q Sustainable Engineering:a) Discuss the origins of sustainable engineering, what it is,and why it is important.b) Discuss and critique one method for assessing environmentallysustainability of engineered solutions.c) Explain how one could...
- Q Soru 4) At atmospheric pressure, it is boiled in a steel potwith an electric heater from below. Calculate the heat fluxtransferred from the surface to the water when the surfacetemperature...
- Q - Discuss the operating principles of both heat pumps andindustrial refrigeration systems.- Assess the factors that influence the economics of heat pumps.-- Discuss the apparent contradiction between refrigerationcycles and the...
- Q 1. screw pump test rig in detail2. general use screw pump3. identify its accuracy, precision and time respond in gettinga reading.4. the advantage and disadvantage of screw pump.
- Q (a) What is the difference between atomic structure and crystalstructure(b) Sketch the BCC and the FCC unit cells and show that theatomic packing factor for a BCC unit cell is...
- Q 3. a. Describe homogeneous, isotropic, anisotropic andorthotropic materials and the nature of mechanical properties forsuch materials.b. Discuss slider crank mechanism and quick return mechanismc. Considering engineering application that uses any...
- Q Write a detailed research report on GEARBOXES
- Q Hydrogen at 25oC and 0.1 Mpa is fed to the head of acutting torch. Calculate the adiabatic flame temperature if thehydrogen is burned with 250% excess air at at 25oC...
- Q Completely and thoroughly explain how Averageswere determined and used by any company that either makes orinstalls any type of Heating or Air ConditioningProductYou may briefly summarize the concept, but at...
- Q Consider an ideal Brayton cycle with reheat (air standard). Thepressure and temperature of the air at the inlet of the gas turbineis 1200 kPa and 1000 K respectively. Assume the...
- Q Heat & Mass TransferConsider the flow of water over a flat plate at a filmtemperature of 25 °C. The plate is 10m long, and the Reynoldsnumber at the end of...
- Q Construct a vertical U-tube manometer to measure the pressuredifference across a flow section. Explain in details and write anequation relating to the pressure difference to the difference inliquid level. Recommend...
- Q C++ Primary U.S. interstate highways are numbered 1-99. Oddnumbers (like the 5 or 95) go north/south, and evens (like the 10or 90) go east/west. Auxiliary highways are numbered 100-999, andservice...
- Q Superheated vapor enters the turbine at 10 MPa, 480°C, and thecondenser pressure is 7.5 kPa of a steam Rankine power cycle.Isentropic efficiencies of the turbine and pump are 84% and...
- Q The circular fin of diameter D=1mm and length L=25.4mm, made ofcopper (k=400 W/m.K), are used to enhance heat transfer from asurface that is maintained at temperature Tb=132 °C. and the...
- Q A pump steadily delivers 8.94 kg/s of water at the conditionsgiven below. Calculate the pump power (hp).The rate of heat transfer from the pump to the surroundings is Q= 1.61...
- Q How to find the material kind from the young modulus? My youngmodulus is 21548.26 MPa. I dont know what table to look at.
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