Exam 19: Scheduling

A 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,in what order should these jobs be undertaken?

A job has 10 days of processing time left to do before completion and today is the 5^th day of the month.If the job is due on the 15^th day of the month,what is its critical ratio?

A material requirements planning system is an example of which of the following scheduling systems?

In production scheduling the process of determining which job to start first on some machine or in some work center is known as sequencing or priority sequencing.

Under the STR/OP sequencing priority rule,orders with the jobs with the longest STR/OP are run first.

A job has 5 days of processing time left to do before completion and today is the 10^th day of the month.If the job is due on the 14^th day of the month,what is its critical ratio?

Which of the following is not a way in which a work center can be organized?

What is sub-optimization in scheduling?

Which of the following is one of the major functions of shop-floor control?

Assume there are five jobs (i.e. ,A,B,C,D and E)that need to be sequenced in a production schedule.The remaining operating time necessary for completion of job A is 3 days (i.e. ,job A will take 3 more days to complete),B will take 9 days,C will take 6 days,D will take 5 days and E will take 8 days.Which job should be scheduled last if using the SOT priority rule for job sequencing?

The assignment method of job sequencing is a special case of the transportation method of linear programming.

The FCFS priority rule used in sequencing production jobs will always result in a better solution than the LCFS rule.

A shop-floor control system is a system that uses data from the shop floor as well as data processing files to maintain and communicate status information on shop orders and work centers.

Theoretically,all schedules are feasible when finite loading is used.

A backward schedule tells when an order must be started in order to be done by a specific date.

Scheduling employees to have two consecutive days off is required by the Fair Labor Standards Act.

The textbook underscores the importance of scheduling with the phrase "workflow equals cash flow and scheduling lies at the heart of the process".

Which priority rule is so powerful that it has been called "the most important concept in the entire aspect of sequencing"?

Distinguish between forward scheduling and backward scheduling?

A 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 slack time remaining priority rule,in what order should these jobs be undertaken?