A dial indexing machine has six stations that perform assembly operations on a base part. The operations, element times, q and m values for components added are given in the table below (NA means q and m are not applicable to the operation). The indexing time for the dial table is 2 sec. When a jam occurs, it requires 1.5 min to release the jam and put the machine back in operation. Determine
(a) Production rate for the assembly machine,
(b) Yield of good product (final assemblies containing no defective components), and
(c) Proportion uptime of the system.

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Station Operation Add part A Fasten part A Assemble part B Add part C Fasten part C Assemble part D Element time 4 sec 3 sec 5 sec 4 sec 3 sec 6 sec 0.6 NA 0.8 0.015 NA 0.01 0.02 NA 0.01 4 NA 0.5