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A single-station assembly machine is to be considered as an alternative to the dialindexing machine in Problem 17.8. Use the data given in that problem to determine (a) hourly production rate, (b) yield of good product (final assemblies containing no defective components), and (c) proportion uptime of the system. Handling time to load the base part and unload the finished assembly is 7 sec and the downtime averages 1.5 min every time a component jams. Why is the proportion uptime so much higher than in the case of the dialindexing machine in Problem 17.8?

m Station 1 2 3 4 5 6 Operation Add part A Fasten part A Assemble part B Add part C Fasten part Assemble part D Element Time 4 sec 3 sec 5 sec 4 sec 3 sec 6 sec 9 0.015 NA 0.01 0.02 NA 0.01 0.6 NA 0.8 1.0 NA 0.5