Skill B2. Which of the following statements describes how increasing utilization of a workstation (by increasing the throughput) affects the performance at that workstation? (NOTE: there may be none, one, or more than one true statement.)
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Read DetailsSkill A2. Consider the performance of the following machine:The natural job process time has a mean equal to 4 minutes per part with a natural standard deviation of 20 seconds. The mean time to failure is 500 minutes, the mean repair time is 4 minutes, and the repair time variance is 4 minutes2. A non-preemptive calibration step is done after every 20 parts; the mean calibration time is 5 minutes, and its standard deviation equals 1.5 minutes. What is the mean of the effective process time (in minutes)?
Read DetailsSkill B3. Consider a workstation at which parts are processed by a single machine called the H426; using this machine, the average effective processing time is 20 minutes (per part), and the standard deviation of the effective process time is 25 minutes. Parts arrive at the rate of 2 parts per hour. The arrival SCV = 1. What is the average cycle time at this station (in minutes)?
Read DetailsSkill B4. Consider a workstation at which parts are processed by two workers (working in parallel). At this workstation, the average effective processing time is 30 minutes (per part), and the standard deviation of the effective process time is 30 minutes. Parts arrive at the rate of 3.2 parts per hour. The arrival SCV = 1.2.What is the average cycle time at this workstation (in minutes)?
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