Mechanical Engineering question and answers for July 16, 2023
- Q what alloying elements affect the machinability of steelalloys?what are advantages and disadvantages of welding over otherjoining processes?
- Q Find at least one example of each of these three promotionaltools in the current press, Internet, TV, or other media source:advertising, public relations (PR), and personal selling. For eachpromotional tool...
- Q Consider a 9 mm diameter circular tube, calculate the length of tube that is required to transfer 100 W ofwater that circulates through the tube at a rate of 0.08...
- Q An Otto Cycle has air operating as the working fluid. The airbegins the compression process at 90 kPa and 40oC. During the heataddition process, the maximum temperature of the air...
- Q Explain, using your own words, how a solar cell works. Pleaseinclude the description of all relevant physical processes, such ascharge carrier generation, recombination, and collection. Include adescriptionof carrier concentration upon...
- Q An ideal diesel engine has a compression ratio of 20 and usesair as the working fluid. The state of air at the beginning of thecompressor process is 100 kpa and...
- Q Sketch two graphs showing how the specific thrust andthrust-specific fuel consumption (TSFC) of an idealhydrogen-burning ramjet varies with flight Mach number from staticconditions up to Mach 7 and state why...
- Q In terms of sustainability, what is lifecycle of a product? Whatare the stages of lifecycle and why each cycle is important?
- Q why is edge bead more common in thick SU-8 compared to thinShipley 1827? How can we minimize the edge bead problem (describeall possible methods)? What kind of issues does edge...
- Q Consider a gas turbine engine, fueled by natural gas, forgenerating electricity.A.) Calculate the adiabatic flame temperature for this system,assuming we’ll use about 110% TA.B.) Estimate (calculate) the power output for...
- Q A given machining operation is being performed and managementswants to know the cost for performing the work. The informationyou’ve collected shows the following: Machining Time = 7.680 min.,Part Handling Time...
- Q Nanotechnology:Explain how does the minimum thickness of the resistlayer can change when taking into account doping concentrations inthe ion-implanted layers.
- Q Write and upload a MATLAB script to do the following.Compute the sequence S(n+1) = (2 – K) S(n) – S(n-1);  Assume S(1) = 0, S(2) = 1;(a)    Case 1, Assume K...
- Q Convection Heat transfer internal flowConsider water flowing in a heated tube. The tube is 14 m longwith an inner diameter of 1 cm. The heatis added at 1500 W/m2 uniformly...
- Q Quastion 1:choose the right answer for the following questions:a) Euler’s equation arises from neglecting the …………. Terms inthe more general Navier-Stokes equations.1- Density 2- Pressure 3-Viscosity 4-Noneb) A……………. is used...
- Q Question 1: (true or false)a- It is unnecessary to account for surface forces when writingthe momentum equation for control volume (True) (false)b- in the course of Fluid Mechanics, we studied...
- Q Hot air flows with a mass flow rate of 0.05 kg/s through aninsulated square duct with side of 0.15m, the hot air enters at 103oC and after a distance of...
- Q The American novelist James Baldwin wrote, \"Words like freedom,justice, democracy are not common concepts; on the contrary, theyare rare. People are not born knowing what these are. It takesenormous and,...
- Q Create a script that calculates the sine, cosine, and tangent ofa vector from 0 to2? with steps of ?/16. The numbers should havethree digits to the right of the decimal....
- Q Moist air (RH = 60%) at 80oF enters an Evaporativecooling unit as it enters a greenhouse and leaves at 100%saturation.How many pounds Water per pound of Air will be required?Select...
- Q 3. (a) What is the difference betweenthe signal measurement methods in ‘differential mode’ vs ‘singleended measurement’?
- Q A sensor is used to calculate the kinematic attitude of asatellite with respect to a reference frame.Two stars are observed by the sensor, S1 and S2.In the reference frame, S1...
- Q ( fluid lab)I need theory forDragCoefficient and Effect of Angle of Attack on spherePlease incomputer not hand writing
- Q a) A mass of 400 kg is to be raised by the actuation of twoidentical hydraulic cylinders with a piston diameter of 120 mm.Calculate the required system pressure to just...
- Q Â What are Rosette analysis and Flexure formula?Comment on the comparison between experimental values obtained through Rosette analysis with those values obtained through Flexure formula.
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