Mechanical Engineering question and answers for August 15, 2023
- Q A circular Euler column with one end fixed and the other pinned(or hinged or simply-supported) is under a compressive axial load.Given the length L of the column and bending rigidity...
- Q A well was drilled to 3000 meters depth with a casingof (9 5/8 inches) nine and five eigths inches with an internaldiameter of 6,69 inches, they continued drilling up to...
- Q Stresses at a point are: 60 MPa in the x-direction, 80 MPa inthe y-direction and no shear stress in this reference x-y plane.Note that these are already the principal stresses...
- Q 2. Initially, the steel sphere with a diameter of 15 cm with atemperature of 200°C was left to cool in the airflow at atemperature of 6 m/s. By making the...
- Q The flow limit of commercial-grade aluminum is given as σ = 120MPa, the modulus of elasticity is E = 70 GPa and the density is 2.7gr / cm3.a) There is...
- Q design and their source water heat pump usingsimulation of software Photon 77 and explain step-by-step thetheoretical as well as experimental steps to be carried out inorder to design linear compressor...
- Q A plate of length 4m in the direction of the flow and ofwidth 2m is pulled at a speed of 108 km/h in water at15oC find the power needed against...
- Q Two large tanks with the same levels of water inside,one is open to the atmosphere while the other is closed andpressurized with an inside pressure of 65 k Pa gage...
- Q A pump curve provided by a manufacturer is givenby h= 20[1−(Q/100)2]where h is the head provided by the pump in meters and Q is thedischarge in liters per minute. The...
- Q . Air enters the compressor of a gas turbine power plantoperating on Brayton cycle at 14.5 psia and 540° R. The pressureratio across the turbine and compressor is same, which...
- Q Write a two page report on the recent space travel by NASA andSpaceX. Explain any two electronic subsystems involved.
- Q An ideal Rankine cycle operates between 2700 psia and 1050° F atthrottle and 4 psia in the condenser. One high pressure open typefeed-water heater and one low pressure open type...
- Q 1.discuss the simple device for rheological model in order toobtain displacement-time and force-displacement responses.2.explain relationship between stress strain curve with anelastic,perfectly plastic model.
- Q Rankine cycle operates on boiler pressure 15 MPa and condenserpressure of 30 kPa. Superheated steam enters the high-pressureturbine at 450°C. The high-pressure turbine expands the steam andenters the re-heater at...
- Q A rigid and closed steel tank with a volume of 86 dm3Â Â contains a mixture of saturated vapor andliquid at a quality and pressure of 0.9 and 20 bar respectively.Heat...
- Q Determine the adiabatic flame temperature when liquid octane,C8H18 at 25C is burned with 300% theoretical air at 25C in a steadyflow process.
- Q As a Mechanical engineer, to prevent building collapse fromhappen, Based on Engineering statics what factor should you takeinto account in designing the structure of the mall and if everthis incident(building...
- Q Let's consider a four-cylinder engine with phase angles of 0o,90o,270,o180o. Commute mass for each cylinder 2kg, crank length 50 mm, connecting rod 250mm, distance between cylinder axes 150 mm. The...
- Q which is the reason why the equation is reached: dU = FcosΘds todescribe the work done by a force.Include descriptive schemes.Write when the work is positive, negative or null depending...
- Q Canthe quality be defined in the superheated vapor or compressedliquid regions?
- Q Consider a turbine; working substance is air.cp=1.0 kJ/kgK,   k=1.4v1=0.03 ,   v2=0.08 m3/kg,    p1=2.5bar; state 1 is enterance, state 2 is the exit of the turbine.The turbine is not ideal (isentropic); the...
- Q Consider a 2nd order system with m=30kg, k = 5000N/m, c =387N-s/m. Generate the BODE plot using MATLAB or Excel to find themaxima. If you do not have Excel, you...
- Q what would be the real life example of an elasticityplease explain??
- Q If TIG, MIG and arc welding are in consideration, which one ismore suitable for robotic (automatic) welding? Why?
- Q • Maintenance Management, Practices, Computerized Systems andfuture advancements.please could you provide me with full description about eachaspect.
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