Mechanical Engineering question and answers for July 28, 2023
- Q 1.The population of India in the year 2000 was 1 billion and itincreased exponentially at a rate of 1.6% per year. If the growthrate is maintained, what will be the...
- Q A nozzle at standard sea level pressure has two water manometersmeasuring the static pressure at two points 1 and 2. The upstreamdiameter D1 is 8 in and the downstream diameter...
- Q Imagine you are a pipeline company trying to sell a new projectto a shipper of oil for a new refinery in Grand Forks. In order toprepare for selling this idea...
- Q A simple steam power cycle uses solar energy for the heat input.Water in the cycle enters the pump as a saturated liquid at 40°C,and is pumped to 2 bar. It...
- Q Product Design and Development (6th Edition)Develop several concept sketches for a common product. Trydesigning the product form both “from the inside out†and “from theoutside in.†Which is easier for...
- Q Design a muff coupling to connect two shafts transmitting 40 kWat 120 r.p.m. The permissible shearand crushing stress for the shaft and key material (mild steel) are30 MPa and 80...
- Q A long cylindrical object with diameter D=100cm (k=400 W/mK,CÂp = 400 J/kg K, density = 9000 kg/m3) isput into an oven of 1100 K with convectiveheat transfer coefficient h of...
- Q Howand why power factor correction (PFC)is applied in industry
- Q Advantage and disadvantages of ring and redial circuit?
- Q Howand why PEC is applied in indisty ?
- Q consider the IVP ( cos(x)sin(x) - xy^2)dx + (1-x^2)ydy = 0 ,y(0) = 34solve the IVPanswer))) 1156 = ???
- Q What is the best mechanical pencil lead size (i.e. 0.5, 0.7 etc)and lead type (I.e. Hb etc) for engineering drawing (isometric andorthogonal) ?
- Q Hydrolevel vs. ASME case studyWhat can engineering societies do to defend their goods once aconflict of interest is exposed?Have ASME's reviewed conflict-of-interest procedures addressedthe difficulties fully? Why or why not?
- Q Hydrolevel vs. ASME case studyHow could McDonnell and Miller, Inc. have evaded the conflict ofinterest? Â
- Q Determine the resultant vector D when the threevectors below are added together. Express your result in amagnitude and direction.A = 5kN@40*B = 10kN@140*C = 25kN@240*
- Q Theouter and inner boundaires of prandtl stress potential functionshave what restrictions
- Q what do you know about Schlumberger and their career?why Schlumberger?
- Q which of these methods can strengthen copolymers 1. Strainhardening (cold working) 2. Alloying 3. Annealing 4. Reduce grainsize
- Q In large buildings, hot water in a water tank is circulatedthrough a loop so that the user doesn’t have to wait for all thewater in long piping to drain before...
- Q The following readings were recorded during a tensiletest of a mild steel specimen 24mm, wide by 10 mm thick and withgauge length of 200 mm.Force (KN)= 16 32 48 64...
- Q Question 1) As water passes from a pipe of larger diameter to apipe of smaller diameter in converging section, the staticpressure:Becomes halfIncreasesDecreasesDoes not changeQuestion 2) The following reading have to...
- Q Problem 3.4 Part A1 point possible (graded)An isotropic alloy contains 5% by volume of a precipitate ofradius 10nm. Assume the primary metal is in a simple cubicarrangement. The alloy has...
- Q Your company is designing a part that will see a cyclicallyapplied load, before calculating the number of cycles till failureyou need to determine the endurance limit. Determine the endurancelimit on...
- Q Sun GearPlanet GearRing GearQuantity131Module222Teeth22Pressure Angle20 degrees20 degrees20 degreesPitch DiameterComplete the table above and show solution if possibleAdditional specifications:-Unit is in metric (mm)-the ring gear is stationary-the ratio is 10:1 (meaning...
- Q What is the ISO/IEC FDIS17025 INTERNATIONAL STANDARD and what is used for becaus our professor wants us to know what we understand from the offical draft paper General requirements for...
- Q Refined crude oil has been used to lubricate moving parts in awide variety of machines and engines. These petroleum-basedlubricants are extracted from natural crude oil, and must berefined, desalted, dewaxed,...
- Q Please describe your life philosophy, focused on your formativeyears.* (0/1600)
- Q List five FAA maintenance related regulations. How can you as anaviation maintenance manager create success from thoseregulations?
- Q State what you understands on the following questions: 1. Whatis ABNORMAL EVENTS? 2. What is MODIFICATIONS? 3. What isCERTIFICATE OF RELEASE TO SERVICE? 4. Who is TYPE DESIGNORGANIZATION? GIVE SAMPLE...
- Q If the voltage amplitude across an 8.50-nF capacitor is equal to12.0 V when the currentamplitude through it is 3.33 mA, the frequency is closest to:A) 32.6 MHzB) 5.20 MHzC) 32.6...
- Q Question(a) Derive linear density expression for FCC [100] directionand   (b) planar density expression for BCC (100) plane in terms of theatomic radius R.
- Q At the beginning of the compression process of an air-standarddual cycle with a compression ratio of 18, the temperature is 300Kand the pressure is 0.1 MPa. The pressure ratio for...
- Q Steady, laminar flow in an annulus (flow between twostationary concentric cylinders)Obtain an expression for the developedvelocityDistribution and the volumetric flow rate for alaminar,steady, incompressible, fully developed flow inanannulus.
- Q Starting from the general expression of the Navier-Stokesequations in cylindrical coordinates, provide the form of theequations for an axisymmetric, steady flow. Explicitly write downthe continuity equation as well as the...
- Q A closed rectangular tank 1.2 m high, 2.4 m long and 1.5 m wideis two-thirds full of gasoline (specic gravity 0.8). Calculate theacceleration which may be imparted to the tank...
- Q A rectangular tank 1.5 m wide, 3 m long and 1.8 m deep containswater to a depth of 1.2 m. Find the horizontal acceleration thatmay be imparted to the tank...
- Q What’s the accuracy and precision of using a ball screw of 13mm diameter in designing a table of motion which is 48 inches in xand y direction?
- Q Is it possible to obtain an average coefficient of frictiongreater than unity in metal cutting? What about orthagonal metalcutting?
- Q QUESTION 16 – COOLING TOWERS AND EVAPORATIVE CONDENSERS Waterflows at 5000 kg/h and 40°C into a cooling tower and is cooled to26°C. The unsaturated air enters the tower at 20°C...
- Q A centrifugal pump lifts water against a head of 36m, themanometric efficiency being 80%. The suction and delivery pipes areboth 150mm bore, the impeller is of 375mm and 25mm wide...
- Q A 0.2 m3 rigid tank contains 5 kg of water (in any phase orphases) at 600 kPa. Which of the following values is closest to thetemperature of the water in...
- Q 1-Sketch and explain difference among typical metal, ceramic andpolymer behavior through stress-strain diagram.Sketch and explaindifference among typical metal, ceramic and polymer behaviorthrough stress-strain diagram.Text Book- The Science and Engineering of...
- Q An embossing press in which a single-acting cylinder isused for ejecting the processed parts, with the help of circuitdiagrams, describe how the cylinder can be activated using 2/2 and3/2 valves....
- Q A solid and hollow shaft, connected by a coupling, transmitpower. The outside diameters of the shafts are the same and theinside diameter of the hollow shaft is 75% of its...
- Q A compound thin cyclinder has a common diameter of 100 mm andthe inner cylinder has a thickness of 2.5 mm. The radial pressurebetween the two cylinders is 200 kPa and...
- Q There has been a lot of interest about replacing gasoline withethanol, but is this really a good idea? We’re going to compare ablend of ethanol (70% ethanol and 30% gasoline...
- Q 6. The power of a test in hypothesis testing is given by:Select one:a. 1+ßb. 1-ßc. (1+ß)/ ( 1-ß)d. 1/ß7. The power of a test in hypothesis testing is given by:Select...
- Q 26. Select the odd one outSelect one:a. Zone controlb. Paint stripsc. Imbedded wired. dead reckoning27. An AGV has an average speed of 50 m/min. how much distanceit can travel in...
- Q a It was observed that natural frequency of a torsional pendulumwhen vibrating in vacuum is 280Hz. But, the damping frequency is220Hz when the same pendulum is dipped in an oil...
- Q 1 In Oxygen-Sag Curve, at the critical point, the rate ofreaeration becomes ________ the rate of DeoxygenationSelect one:DoubleEqual toHalf2. In general, adsorption of a gas on solid surfaceis_________processSelect one:EndothermicExothermicNone3. Which...
- Q 11. Solubility of O2 _______________with the increasein temp.Select one:IncreasesDecreasesNo Change12. For isokinetic sampling, static pressure at nozzle tipshould be _____________than that of free streamSelect one:LessMoreEqual13The DO level in the water...
- Q Saturated water vapor at 1000 kPa is throttled to 100 kPa. Thevelocity of the steam remains constant through the process.Determine the exit temperature of the water vapor. I know this...
- Q In a connection using 5/8-inch Φ (UNF-18, SAE Grade 8) bolts,each bolt is subjected to a varying axial load between 10 Kips to20 Kips. Bolts can be preloaded between 0%...
- Q 1. Explain the difference between Plane Stress problem and PlaneStrain Problem. Give an example.2. What is the displacement boundary condition you would like toapply after cutting through the symmetric line?3....
- Q 4. What are the material properties to be input in 2-Dstress-strain analysis?5. What are the two sources of errors in FEA modeling?Explain.
- Q An oil cooler for a large diesel engine is to cool engine oilfrom 60 to 45 °C, using seawater at an inlet temperature of 20 °Cwith a temperature rise of...
- Q Air enters the compressor of an ideal air standard Brayton cycleat 100 kPa and 290 K with a mass flow rate (mâ‹…)of 6 kg/s. The compressor pressure ratio is 10....
- Q ABS - Tyres size exchange and how it affects ABC
- Q What is the accuracy and precision of using a ball screw of 0.5diameter in designing a table of motion that is 48 inch in x and ydirection?
- Q A U-tube manometer employs a special oil having a specificgravity of 0.2 for the manometer fluid. One side of the manometeris open to local atmospheric pressure of 24.3 inHg and...
- Q Tensile testingcan someone tell me how to calcualte the true strain,engineering strain, true stress and engineering stress of thefollowing data o got from tensile testing machine. I assumed areato be...
- Q Tensile testingcan someone tell me how to calcualte the true strain,engineering strain, true stress and engineering stress of thefollowing data o got from tensile testing machine. I assumed areato be...
- Q Discuss in detail about the advantages/disadvantages ofcompressors in refrigeration systems. Give practical examples ofcompressors in vapor and/or absorption refrigeration system.Please write down references if any.
- Q a- Do you consider hardness an important mechanical property?why? (specify few examples).b- Comprare and distinguish between the Vickers, Brinell, andRockwell tets.c- which of the following have the highest hardness and...
- Q Explain the ggeometrically necessary dislocation(GND) incomparison with statistically stored dislocation(SSD)
- Q A 3/4\" diameter hole is to be drilled through 3/4\" thick pieceof steel plate. The twist drill is to be fed at 0.025 ipr. Maximumcutting speed of 70 fpm is...
- Q 0.1 kg of air (ideal gas) is contained in a closed, rigid tankof volume 0.04 m^3 at 500 K. A paddle wheel stirs the air andtransfers energy to the air...
- Q 0.1 kg of air (ideal gas) is contained in a closed, rigid tankof volume 0.04 m^3 at 500 K. A paddle wheel stirs the air andtransfers energy to the air...
- Q How to calculate the stiffness of an irregular shaped steelframe ? Include all equations and information needed.
- Q Prove: under the same compression ratio, the thermal efficiencyof the Otto cycle is greater than the thermal efficiency of theDiesel cycle?
- Q Helium at 200 kPa, 227 C is expanded in steady flow through anozzle to 100 kPa. At these operating conditions the nozzleefficiency is 76%.a) Making the usual nozzle assumptions, calculate...
- Q Superheated steam at 8 MPa and 480°C leaves the steam generatorof a vapor power plant. Heat transfer and frictional effects in theline connecting the steam generator and the turbine reduce...
- Q OCCUPATION : Production ANDindustrial  WHAT ARE THE RESPONSIBILITIES WILL BE IN THE JOB?  WHAT IS MY ANNUAL INCOME WILL BE?WHAT I HAVE TO DO TO ACCOMPLISHED FINANCIALLY?.WHAT I HAVE TO DO TO...
- Q The water in a 40-L tank is to be heated from 15°C to 45°C by a25-cm-diameter spherical heater whose surface temperature ismaintained at 85°C. Determine how long the heater should...
- Q A zero-momentum spin stabilized satellite has a momentum wheelspinning at 5000 rpm. The angular momentum of the wheel is 100N-m-sec.a) What is the spin rate of the satellite if its...
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