Mechanical Engineering question and answers for July 24, 2023
- Q 12.2 Compression of Carbon DioxideCarbon dioxide (CO2) at 1 bar and 300 K enters a compressoroperating at steady state and is compressed adiabatically to anexit state of 10 bar and...
- Q MATLABThe user is supposed to enter either a ‘yes’ or ‘no’ in responseto a prompt. The script will print “OK, continuing†if the userenters either a ‘y’, ‘Y’,'Yes', or 'yes'...
- Q 1.Steam is accelerated by a nozzle steadily from a low velocityto a velocity of 210 m/s at a rate of 3.2 kg/s. If the temperatureand pressure of the steam at...
- Q 4. (30) Water (r = 1000kg/m3 and µ = 1.12 x 10-3 Pa-s) is siphonedthrough a 2mm diameter tube 1m long, with the tube exit 0.5m belowthe surface of the...
- Q USING DYNACAM determine the polynomial equation for a singledwell cam to move a follower as followsDwell 0 deg to 100 degRise .625 inches from 100 deg to 200 degFall .625...
- Q A centrifugal water pump is driven at a speed of 1450 rpm. The pump impeller is of radial type and has an average radius of 50 mm at the vane...
- Q 1)please type do not write. How do you test if a property is intensive or extensive? Usingdensity and volume of a system as examples, explain whether theseare extensive.please type do...
- Q  Q1/ Why should you never set an electrified rod (welding unit on and rod is attached) down on a metal table? A. To prevent overheating of the workpiece metal B. To...
- Q Which type of corrosion cell causes iron or steel to corrode(and create rust) when a droplet of water is in contact with thesurface? Question 10 options: a) Composition (dissimilar metals)cell...
- Q You are looking to start a business after you inherited arolling setup, like the one from problem 2. You did a test run andmeasured P = 250kW, you will use...
- Q In an experiment the sample mean of a set of measurement is 10mm and the sample standard deviation is 4 mm for a sample size of36. Using sketch indicate where...
- Q 3a. Using energy storage in mechanical and electrical elements asa guide, if inductance L and mass m are analogous, what is the massvelocity ??? analogous to in the electrical circuit?c....
- Q 1. Engine oil (cp = 2100 J/kg-°C) is to be heated from 20 °C to60 °C at a rate of 0.3 kg/s in a 2-cmdiameter thin-walled coppertube by condensing steam...
- Q list the material selection criteria for a newly developedpart?
- Q In a controlled experiment, it takes 3700 J to melt the amountof metal that is in a weld bead with a cross-sectional area of 6.0mm2 that is 150.0 mm long....
- Q Q2. Two kilograms of air within a piston-cylinder configurationexecute a Carnot power cycle between temperatures 750 K and 300 K.The isothermal expansion is associated with a release of 60 kJ...
- Q write a conclusion and recommendations aboutVibrational and Acoustical analysis of a vacuum brush? how toimprove it ?
- Q Engine oil (raffinate) with a flow rate of 5 kg/s will be cooledfrom 60°C to 40°C by sea water at 20°C in a double-pipe heatexchanger. The water flows through the...
- Q Describe the difference between spectral and total blackbodyemissive power.
- Q The clausius statement of the second law denies the possiblityof transferring energy by heat from a cooler to a hotter body. Ithink it true because the statement says that \"...
- Q Thermodynamics1. Correct Answer: 8.0087 ± 0.1%Steam at 1 MPa, 593.2oC,expands in a turbine to 0.01 MPa. If the process is isentropic, find the specific entropy (kJ/kg-K) at the exit ofthe...
- Q Air at 40 degrees C is humidified by flowing over a 1-m-longcontainer filled with water. The surface area of container is0.5m^2.The interfacial temperature is 20 degrees C. If the initialhumidity...
- Q Compute the maximum thrust density, power density and specificimpulse for a 3-grided ion engine, having an acceleration voltageof 2000 V, and a voltage difference of 2500 V and a gap...
- Q Discuss the bene?ts and drawbacks of bond-then-form versusform-then-bond approaches. In your discussion, include discussionof processes which can use secondary support material and thosewhich do not.
- Q ThermodynamicsAir at 3.5 MPa and 500°C is expanded in an adiabatic gas turbineto 0.2 MPa. Assume that the process is reversible. Changes in KEand PE may be neglected and the...
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