Mechanical Engineering question and answers for July 29, 2023
- Q Process X is internally reversible from state 1 to 2. Process Yis internally irreversible between same states 1 to 2. What can yousay about the change in entropy of the...
- Q A 1-mm diameter sphere (density=7900 kg/m3) isdropped into a tank of oil (density=900 kg/m3). Thesphere develops a terminal speed of 0.25 cm/s, what is the oil'sviscosity? You may assume a...
- Q 4. Explain why the energy efficiency in the case of idealquenching is lower than energy efficiency in the regime ofsuper-ideal quenching?
- Q Theinternal energy of wet steam is 2000KJ/kg. If the pressure is 1.18MPa, what is the quality of the mixture
- Q An essay on Engineering
- Q A composite of Al2O3 particles in an epoxymatrix contains 10 wt.% Al2O3. What are theupper and lower bounds on the elastic modulus of the composite?Data: ÏAl2O3 = 3.95 g/cm3 ,...
- Q A stock steel spur pinion has a diametral pitch of pd=8teeth/in, a 1.5 in. face, 26 full-depth teeth, and a pressure angleof Φ = 20°. If the pinion is driven...
- Q how could mechanical engineering improve plastic recycle?
- Q A short and hollow cylindrical bar, having an outer diameter of4.00 in and an inner diameter of 7 in, issubjected to two simultaneous loads - an axial compressive force of75,100...
- Q Characterize principles and problems associated with flow pastimmerse bodies and its relationship to Reynolds number and geometryeffects.
- Q Engineering report writing on autoclave (sterilizer)machine breakdown which occurs more often due to hardwater/untreated water. The factors which leads to that and thesolution to the problem. Recommendation and Summation to...
- Q A convergent–divergent nozzle with an exit area to throat arearatio of 3 is supplied with air from a reservoir in which thepressure is 350 kPa. The air from the nozzle...
- Q In transonic wind tunnel testing, the small area decrease causedby placing the model in the test section, i.e., by the modelblockage, can cause relatively large changes in the flow in...
- Q Air at a pressure of 350 kPa, a temperature of 80°C, and avelocity of 180 m/s enters a convergent–divergent nozzle. A normalshock occurs in the nozzle at a location where...
- Q Air is supplied to a convergent–divergent nozzle from a largetank in which the pressure and temperature are kept at 700 kPa and40°C, respectively. If the nozzle has an exit area...
- Q For the project you have selected for this class, do thefollowing: \"House maintenance\"  a. Collect the appropriate data to analyze(characterize) the current situation.  b. Decide which tool(s) from the course...
- Q A liquid at 300 F flows through a 3-in. steel pipe (schedule 40)covered with a ½ in. thickness of asbestos insulation. The ambienttemperature is 80 F. The inside surface film...
- Q A liquid at 300 F flows through a 3-in. steel pipe (schedule 40)covered with a ½ in. thickness of asbestos insulation. The ambienttemperature is 80 F. The inside surface film...
- Q in viscous damping free vibration response what has the mostpowerful effect among m, c, k and initial condition? please writethe reason.
- Q A 2,900 square foot retail (sales) space located in Lewiston, IDis to be maintained at 69ºF DB. The total heating load for thespace is calculated to be 130 MBH. The...
- Q Briefly describe two industrial applications for each: open andclosed loop control system.
- Q Compare and contrast spin recovery procedures of two differentaircraft. What makes the recoveries different for eachaircraft?
- Q A steel has a modulus of elasticity of 29,000 ksi and an elasticlimit of 52 210 psi. A rod of this material and cross section of0.0186 in2 and 36 in...
- Q Develop a single or set of event trees to describe theescalation mechanism that would lead to an impairment of a TR froma fire or explosion in an adjacent module. Your...
- Q A laboratory drying oven has a composite wall made of Plane Wall1 and Plane Wall 2 as shown above. A thin film heater (surface heatsource, thickness negligible) is sandwiched between...
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