Engineering, 09.12.2021 14:00 jakedoc31
A six-station automatic assembly line has an ideal cycle time of 12 sec. Downtime occurs for two reasons. First, mechanical and electrical failures cause the line to stop that occur with a frequency of once per 50 cycles. The average downtime for these causes is 3 min. Second, defective components also result in downtime. The fraction defect rate for each of the six components added to the base parts at the six stations is 2%. The probability that a defective component will cause a station jam is 0.5 for all stations. Downtime per occurrence for defective parts is 2 min. Determine
a) Yield of assemblies that are free of defective components? (5 marks)
b) proportion of assemblies that contain at least one defective component? (2 marks)
c) Average production rate of the good products? (10 marks)
d) Uptime efficiency? (3 marks)
Answers: 2
Engineering, 04.07.2019 18:10, kevin72836
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
Engineering, 04.07.2019 18:20, samantha636
Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k
Answers: 2
Engineering, 04.07.2019 19:20, anggar20
Air enters a horizontal, constant-diameter heating duct operating at steady state at 290 k, 1 bar, with a volumetric flow rate of 0.25 m°/s, and exits at 325 k, 0.95 bar. the flow area is 0.04 m2. assuming the ideal gas model with k = 1.4 for the air, determine (a) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer, in kw flow rate, in kg/s, (b) the mass kg 0.3
Answers: 2
A six-station automatic assembly line has an ideal cycle time of 12 sec. Downtime occurs for two rea...
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