Question 1 A single machine work center has five jobs assigned to it. They are labeled, in the order of their arrival in the shop, as jobs A, B, C, D and E. The work center may work on only one job at a time and must complete any job it starts before starting another job. Job A has a processing time of 6 days and is due to the customer in 9 days. Job B has a processing time of 2 days and is due in 16 days. Job C has a processing time of 4 days and is due in 10 days. Job D has a processing time of 3 days and is due in 7 days. Job E has a processing time of 5 days and is due in 12 days. Using the first-come-first-served priority rule, what is the number of late (tardy) jobs?Answer0 (zero)12345 points Question 2 A single machine work center has five jobs assigned to it. They are labeled, in the order of their arrival in the shop, as jobs A, B, C, D and E. The work center may work on only one job at a time and must complete any job it starts before starting another job. Job A has a processing time of 6 days and is due to the customer in 9 days. Job B has a processing time of 2 days and is due in 16 days. Job C has a processing time of 4 days and is due in 10 days. Job D has a processing time of 3 days and is due in 7 days. Job E has a processing time of 5 days and is due in 12 days. Using the shortest (earliest) due date rule, what is the average completion (flow) time of all jobs?Answer4.012.62.65 points Question 3 A single machine work center has five jobs assigned to it. They are labeled, in the order of their arrival in the shop, as jobs A, B, C, D and E. The work center may work on only one job at a time and must complete any job it starts before starting another job. Job A has a processing time of 6 days and is due to the customer in 9 days. Job B has a processing time of 2 days and is due in 16 days. Job C has a processing time of 4 days and is due in 10 days. Job D has a processing time of 3 days and is due in 7 days. Job E has a processing time of 5 days and is due in 12 days. Using the shortest processing (operating) time priority rule, what will be the average tardiness of these orders?Answer2.62.03.05 points Question 4 A single machine work center has five jobs assigned to it. They are labeled, in the order of their arrival in the shop, as jobs A, B, C, D and E. The work center may work on only one job at a time and must complete any job it starts before starting another job. Job A has a processing time of 6 days and is due to the customer in 9 days. Job B has a processing time of 2 days and is due in 16 days. Job C has a processing time of 4 days and is due in 10 days. Job D has a processing time of 3 days and is due in 7 days. Job E has a processing time of 5 days and is due in 12 days. Using the shortest processing (operating) time priority rule, what will be the average number of jobs in the system?Answer5432.55 points Question 5 A machine shop has two machines, M1 and M2. Four jobs A, B, C, and D need to be processed through machines M1 first and M2 second. Job A will take one hour on machine M1 and three hours on machine M2. Job B will take three hours on M1 and two hours on M2. Job C, takes seven hours on M1and three hours on M2. Job D, requires five hours on M1 and one hour on M2. Using Johnson’s rule, in what order should these jobs be done? Select one of the following answers.AnswerABCDACBDDABCDACB5 points Question 6 Consider the following data for a five-job, 2-machine, flow-shop problem. Find the value of make-span (minimum time to complete all jobs) using the sequence ABCDE. (Note: It is suggested that you draw the Gantt chart first.)TimeTimeJobM1M2A12B42C13D54E35Answer161920305 points Question 7 Which of the following is a measure of whether the job is done ahead of, on, or behind schedule?Answeraverage number of jobs in systemmean flow timemakespanjob tardinessjob lateness5 points Question 8 Suppose SPT rule is being used in a dynamic scheduling problem. There are five jobs A,B,C,D, and E ready to be processed at the present time. The processing times for the five jobs are 1, 9, 7, 2, and 6 days respectively. A new job F will arrive on the 8th day. The processing time for job F is 5 days. On which day (from present time) job F will be completed?Answer25141355 points Question 9 Johnson’s rule gives the optimal answer for which of the following type of problems?AnswerMinimize make span in a two machine flow shopMinimize make span in a two machine job shopMinimize make span in a single machine problemMinimize make span in both two machine flow and job shops.5 points Question 10 Which scheduling rule will minimize the average number of jobs in a single machine scheduling problem?AnswerFirst Come First Served (FCFS)Earliest Due Date (EDD)Shortest Processing Time (SPT)Does not matter which rule you use. All rules will give the same answer.5 points Question 11 Use the data given in the following table and the relationships between activities shown in the Activity on Node (AON) network. Find the project duration (earliest completion time of the project).ActivityABCDEFGTime (days)5694934
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