Mechanical Engineering question and answers for July 28, 2023
- Q Water is used to cool ethylene glycol in a 18.3-m-long doublepipe heat exchanger made of 4-std and 2-std (both type M) coppertubing. The water inlet temperature is 15.6°C and the...
- Q For the differential equation x′′ + (o.1)(1 − x2)x′ + x = 0; x(0)= 1, x′(0) = 0. (a) Rewrite it as a system of ï¬rst orderdifferential equations in preparation...
- Q 1) Present ten standards compliance certificate for the designof shell and tube heat excanger2) Present the safety features and considerations that can beadopted for the shell and tube heat heat...
- Q An ideal Rankine cycle operates with a turbine inlet pressure of900 psia and a turbine inlet temperature of 572 oF. The steam isisentropically expanded through the turbine to 5 psia...
- Q An ideal Rankine cycle operates with a turbine inlet pressure of600 psia and a turbine inlet temperature of 526 oF. The steam isisentropically expanded through the turbine to 15 psia...
- Q An ideal Rankine cycle operates without superheat (wet cycle) asshown in the following T-s diagram. If saturated steam is expandedfrom 450 psia to steam with 5 % moisture, use the...
- Q In a curved channel, what causes the asymmetry in the full flowspeed profile?
- Q What is Axiomatic Design?Steps and Application of Axiomatic DesignExample of Axiomatic DesignLink Axiomatic Design to your own experience and real businessstory to use the tool.
- Q What is the basis of “Design for Maintainability� Whenmight the principles of Design for Maintainability lead to baddesigns when followed without consideration of other principles?Defend your answer with a short...
- Q During a test a rocket travels upward at 75 meters/second, andwhen it is 40 meters from the ground its engine fails. Determinethe maximum height h reached by the rocket and...
- Q Air enters a window air conditioner at 1 atm, 36oCand 75% relative humidity (??) at a rate of 12m3/min andit leaves as saturated air at 18oC. Part of the moisturein...
- Q Air at 28 °C, 1 bar, 50% relative humidity enters an insulatedchamber operating at steady state with a mass flow rate of 5 kg/minand mixes with a saturated moist air...
- Q Five kilograms of steam contained in a 2-m3 cylinder at 40 kPais compressed isentropically to 5000 kPa. What is the workneeded?Please show correct work.Answer: 185 kJ
- Q 16. List the two elements involved in preparing for maintenanceon heat exchangers.21. List two methods of cleaning the outside surfaces of tubesin a large shell- and-tube heat exchanger26. Name the...
- Q Consider an airplane modeled after the twin-engine BeechcraftQueen Air executive transport. The airplane has the followingcharacteristics: weight is 38,220 N; wing area is 27.3 m2; aspectratio is 7.5; Oswald efficiency...
- Q What is Film blowing?Describe the lost foam casting process. What is an advantage tolost foam casting?How is most wrought steel initially produced?Subject is actually Materials Science/Engineering
- Q What is anthropometry? What are typical measures of anthropometry? What equipment is used? What does the equipment tell us? Why is anthropometry important to study? What is ergonomics?
- Q What is external flow? What is internal flow? What is the Reynolds number? What is its physical interpretation? What are turbulent and laminar flows? Plot the variation of the local...
- Q What is the basis of Reynolds Analogy? (what is analogous to what?)
- Q What is components? What is phases? What is tie line?
- Q Class 20 and class 60 gray cast irons have tensile strengths ofabout 20 ksi and60 ksi, respectively. Assuming that the fractures start fromgraphite flakes and thatthe flakes act as preexisting...
- Q 1. You want to design a pendulum for a grandfather clock so thatit has a period of 2.00 seconds (so that one “tick†plus one “tockâ€occur during one complete period)....
- Q An airplane weighing 5,000 lb is flying at standard sea levelwith a velocity of 550 mi/h. At this velocity, the L/D ratio is amaximum. The wing area and aspect ratio...
- Q Develop MATLAB codes for Blade Element Momentum Theory forhorizontal axis tidal turbine for airfoil NACA 0015, analyzing theperformance of the turbine; power.
- Q In Systems Engineering, What is CM? What is Change Management?What are their similarities and what are the differences?
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