Mechanical Engineering question and answers for July 14, 2023
- Q A 0.2 m^3 piston/cylinder contains air at 400 K and 400 kPa andreceives heat from a constant temperature heat source at 1300 K.The piston expands at constant pressure to a...
- Q How does shot peening introduce residual stresses over amaterial surface?Explain its mechanism by drawing the material surfaceplastically deformed as a result of the impact of theshot.    Â
- Q Consider the combined power cycle for which Qin=Qin1 ,Qout=Qout2and Wcycle=Wcycle1 + Wcycle2. Derive an expression for the thermalefficiency ? of the combined power cycle in terms of ?1 and ?2.Prove...
- Q Explain the significance of statistical scatter in fatigue life,especially how this may affect the use of S-N curves forengineering purposes.
- Q Describe the general and specific industry application inrelation to the Bonfiglioli VF 30 gearbox design.
- Q A Rankine cycle uses water as its working fluid. The mass flowrate of water through the cycle is 150 kg/s. Superheated vapourexits the boiler at 8 MPa and 560 °C....
- Q Impact of contemporary robotics in Germany
- Q two subway cars as shown in Figure 1 have mass m = 2000 kg andare connected by a coupler that can be modeled as a spring ofstiffness k = 280,000...
- Q My goal is to be a NC-programmer of CNC machinist.\"Describe/illustrate if all conditions were ideal and youbelieved that all things were possible, what would you seek toachieve as your life's...
- Q Studs used in a turbo pump were made from0.35C-1.5Ni-1.0Cr-0.2Mo steel, quenched and tempered to 400 HVhardness, cadmium-plated and baked at 200°C for 2 h. The studs usedin a turbo pump...
- Q Problem 1.Historical data is collectedfrom an assembly process that consists of 5 operations. Determinethe Rolled-Throughput Yield, Normalized Yield, Normalized Defectsper Unit, and Total Defects per Unit (TDPU), given the followinghistorical...
- Q What is the therotiacal And The expertmatla heat transfercofficnent for heat exchanger in my case shell and tubeTherotical ?formual ??expermantial ?formula ?I am uisng LMTD method
- Q List the processes in each Rapid-prototyping class??1- Subtractive.2- Additive.3- Virtual.
- Q A model aircraft in a wind tunnel with a wing area of 0.9 squaremeters and a chord of .24 meters is subject to a sea level standardairflow at 130 m/sec....
- Q A rigid 0.1 m3 container holds 1 kg of water, initially at 25?C.Calculate the theoretical minimum work required to increase thewater temperature to the point where the water exists as...
- Q Calculate the peak cooling load from an EAST facing wall. Nointerior or exterior shades, no floor carpeting , mediumconstructionWindows: ¼ in double glass with air gap and aluminum frameWindow area...
- Q 4. Consider a reheat–regenerative vapor power cycle with twofeedwater heaters, a closed feedwater heater and an open feedwaterheater. Steam enters the first turbine at 12.0 MPa, 520C andexpands to 0.6...
- Q list electronic manufacturing processes with itsapplications.
- Q A 2-in diameter jet of water having a velocity of 30 ft/s isdeflected parallel to a curved vane. The jet flows freely in theatmosphere in a horizontal plane. Calculate the...
- Q A gaseous mixture of 25% CO, 25% CO2, 25% H2 and 25% H20 isbrought to a temperature T and 1atm. Equilbirium composition of thegas mixture is determined by the following...
- Q A 100-lb driver and a2000-lb tractor lift 900 lb of gravel. Create a MATLAB program thatwill:Â Â Determine the reaction at each of the two rear wheels and twofront wheels.The shift has...
- Q Briefly describe, probably with the aid of an illustration, theinjection molding process. For full credit, state what generalcategory of polymer it is used for.
- Q Consider a Carnot heat engine cycyle executed in a closed system(piston-cylinder device) using 0.01848695 kg of stem as the workingfluid. It is known that the maximum absolute temperature in thecycle...
- Q Specify suitable machine screws to be installed in apattern of four, equally spaced around a flange, if the clampingforce between the flange and the mating structure is tobe 26.7kN. Recommend a...
- Q How to calculate overall fuel economy of hydraulic hybridvehicle? Know that fuel economy formula is litre per used overdistance travelled. How to calculate the fuel used for both ICE andhydraulic...
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