 , 02.12.2019 22:10 jetblackcap

# "(uscs units) fused deposition modeling is used to fabricate a part which is a model of the step pyramid at sakkara in egypt (built circa 2670 bce). the model has six levels or steps, each with a thickness of 0.17 in. the bottom layer = 2.20 in on a side, and successive levels are 1.85, 1.50, 1.15, 0.80, and 0.45 in on a side, respectively. height of the pyramid = 1.02 in. in the fdm process, layer thickness = 0.010 in and the width of the extrudate deposited on the surface = 0.025 in. the extruder head moves in the x-y plane at a speed of 10 in/sec. a delay of 12 sec is experienced between each layer to reposition the worktable. compute an estimate for the time required to build the part. setup time = 35 min. ignore post-processing time. using the time estimated to build the part, determine the part cost (in \$) if the abs polymer used in the process costs \$9.50/lb and its density = 0.038 lb/in^3, machine hourly rate = \$8.00/hr, and labor rate = \$30.00/hr but labor will be used only 40% of the build time, mostly for setup ### Another question on Engineering Engineering, 03.07.2019 12:20
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa. Engineering, 03.07.2019 12:20
When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point Engineering, 03.07.2019 12:20
Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles. Engineering, 03.07.2019 12:30
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
"(uscs units) fused deposition modeling is used to fabricate a part which is a model of the step pyr...
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