Mechanical Engineering question and answers for August 14, 2023
- Q On plant Mercury there is a special lake with two layers: dH2Oand dHg (liquid mercury). The liquid water layer floats on top ofthe liquid mercury layer. Let ÏH2O and ÏHg...
- Q a broth suspension containing 1.20E + 06 bacterialspores A with a D value of 2.3 minutes and 8.00E + 06 bacterialspores of bacterium B with a D value of 15...
- Q P3. It is desired to begin with a eutectoid steel, it isdesirous to reach a combination(a) 680 HB and ~0%RA(b) 260 HB and 20%RA; , please recommend material andtreatment preferably...
- Q 4. a frozen cream ice is placed into the containerbefore the freezing process is complete. The container has aslinder-shaped dimension with a diameter of 3.5m and is then placedin a...
- Q The differential equation for the current in an RLC circuit isgiven byL d2i/dt2 +R di/dt+(1/c)i =wE0cos(wt) with initial values i(0)=0 and i'(0)=0.Solve the above IVP.
- Q Explain briefly the differences between simple, compound, andepicyclic gear trains
- Q a single effect evaporator is used to concentrate asolution of 10% of total solids to 30% of total solids at a rate of250 kg / h. if the evaporator pressure...
- Q Agas turbine operates with two stages of compression with anintercooler between the stages. Air enters the first stage at 100kPa and 300 K. The pressure ratio across each compressor stage...
- Q Consider a very deep triangular duct (deep in the directionperpendicular to the plane of thepaper) made of diffuse gray walls. The cross section of the ductforms an equilateral triangle ofsides...
- Q Two infinitely long plates with surface temperatures maintainedat 600 K and 300 Krespectively are placed parallel to each other. Two infinitely longradiation shields are placedin the evacuated space between these...
- Q Consider a regenerative Rankine cycle with one steamextraction point using anopen feed-water heater (OFWH).P at boiler = 5 MPaT at turbine inlet = 600 0CP at OFWH = 1 MPaP...
- Q no 1No 7.The reverse system is used to increase the total solid orange juicefrom 11% to 24% consisting of 100 pipes with a length of 10 m and adiameter of...
- Q Solve by Excel Solver using  branch and boundmethod.Minimise:f = 4x1 + 5x2 + x3 +4x4 + 2x5 + 11x6 + 2x7Subject to:g1 = 2x1 + 4x2 + 5x3 +7x4 + x5...
- Q Calculate the osmotic pressure of low-fat milk with 9%total solids at 20°C and a gas constant of 8.134 m³ kPa / Kg molK
- Q A 10 kg steam initially at 2 MPa saturated vapor is inside aninsulated piston cylinder. The cylinder has a bottom valve. As thisvalve opens, steam at 800 kPa and 200C...
- Q Que1.Consider two balls of identical mass. If ball 1 is movingto the right towards stationary ball 2 at 1.0 m/s and the two ballscollide elastically, what will the final velocities...
- Q Problem1: A 5.2-liter, spark-ignition, four-stroke cycle, V6automobile engine operates at 2400 RPM with ? = 1.5. The engine hasa volumetric efficiency of 89%, with bore as B = 2.1 S....
- Q Angular work is positive during eccentric muscle contraction andnegative during concentricmuscle contraction. With the aid of sketches, explain the reasonfor work to be positive andnegative for eccentric and concentric muscle...
- Q Write a MATLAB script file to integrate  usingtrapezoid method (do not use trapz command for this part, writeyour own script). Consider x=-0.5 to 3 with Δt=0.01, and compareyour result with using...
- Q To find a positive root for , write a MATLAB script file thatuses Bisection method. Choose any initial value that is needed. Useabsolute relative approximate error to be less than...
- Q A power plant operates on a regenerative vapor power cycle withone open feedwater heater. Steam enters the firstturbine stage at 12 MPa, 520â—¦C and expands to 1 MPa, where some...
- Q Steam at 32 MPa, 520â—¦C leaves the steam generator of an idealRankine cycle modified to include three turbinestages with reheat between the stages. The reheat pressures are4 and 0.5 MPa,...
- Q Agas turbine operates with two stages of compression with anintercooler between the stages. Air enters the first stage at 100kPa and 300 K. The pressure ratio across each compressor stage...
- Q Analyze the different types of defects that can be developed inplastic injection moulding processes. Your analysis must includethe defects explanation, causes of the defects and the remedy ofreducing the defects
- Q A SMC is being used to mold the outer panel of an automobilehood. The inner panel of the hood will be made from a thin-gagesteel. Write three concerns you may...
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