Question 1

The shortest processing time rule tends to produce a large variance in ________.

Accepted Answer

The answer of The shortest processing time rule tends to...

Question 2

Table J.5
The following three jobs just arrived (end of hour 0)at Workstation A.They are the only ones waiting to be processed.
  
-Use the information in Table J.5.The sequence of jobs using the slack per remaining operations (S/RO)rule,is:

Accepted Answer

A) 1-3-2 
B) 3-2-1 
C) 1-2-3 
D) 2-3-1 
A) 1-3-2 
B) 3-2-1 
C) 1-2-3 
D) 2-3-1

Question 3

Stu applies the critical ratio method to scheduling his assignments.Which assignment is the fourth one in his sequence?

Accepted Answer

A) E 
B) G 
C) C 
D) D 
A) E 
B) G 
C) C 
D) D

Question 4

What are single-dimension scheduling rules? Provide examples and discuss how each rule performs.

Accepted Answer

Single-dimension rules (e.g. ,FCFS,EDD,a

Question 5

Use the information in the preceding table and sequence the six jobs using FCFS,SPT,and EDD.Calculate the average flow times,average early times,and average past due.

Accepted Answer

FCFS
 @#IMG-DLM& Average Flow Time = 26.50
Average

Question 6

Table J.10
A workstation has six jobs waiting to be processed.They arrived at the end of Day 0 and it is now the beginning of Day 1.It is now time zero.Times are expressed in terms of days.
  
-Using the information in Table J.10 and the earliest due date EDD)rule,what is the average flow time?

Accepted Answer

A) fewer than or equal to 20 days 
B) greater than 20 days but fewer than or equal to 22 days 
C) greater than 22 days but fewer than or equal to 24 days 
D) greater than 24 days 
A) fewer than or equal to 20 days 
B) greater than 20 days but fewer than or equal to 22 days 
C) greater than 22 days but fewer than or equal to 24 days 
D) greater than 24 days

Question 7

________ is the degree to which equipment,space,or the workforce is currently being used.

Accepted Answer

The answer of ________ is the degree to which equipment,space,or...

Question 8

When choosing a priority sequencing rule:

Accepted Answer

A) select multiple-dimension rules because they dominate single-dimension rules for all performance measures. 
B) always select the rule that minimizes the amount of past-due jobs. 
C) test a variety of rules before making a decision. 
D) select CR or S/RO because they use more information. 
A) select multiple-dimension rules because they dominate single-dimension rules for all performance measures. 
B) always select the rule that minimizes the amount of past-due jobs. 
C) test a variety of rules before making a decision. 
D) select CR or S/RO because they use more information.

Question 9

The ________ priority sequencing rule is typically applied in a front-office customer service setting.

Accepted Answer

first come

Question 10

Table J.17
A company must take on seven new projects.Each project has a planning stage and a design stage,and the planning stage must be completed before the design stage can begin.Also,two project teams are available to work on these projects: Team 1 works only on planning stages of projects,and Team 2 works only on design stages of projects.The times to complete the project stage,in days,are shown in the following table.
  
-Using the information in Table J.17 and Johnson's rule,develop a schedule that minimizes makespan for these seven jobs.Assume that job C could be neatly split into two equal parts,each having half of the processing time on each machine as the full job C.Using your original sequence,but splitting job C,what is the makespan for the seven jobs?

Accepted Answer

A) between 58 and 59 days 
B) between 56 and 57 days 
C) between 55 and 56 days 
D) between 57 and 58 days 
A) between 58 and 59 days 
B) between 56 and 57 days 
C) between 55 and 56 days 
D) between 57 and 58 days

Question 11

A job shop is accompanied by divergent flows and low-to-medium volume output rates.

Accepted Answer

A) True 
 B)False

Question 12

Table J.8
Auto Data produces custom engineering testing equipment.The following six jobs are currently in the design department.The time since each one arrived,the processing time,and the due date are shown below.All times are expressed in terms of days.Let now be the beginning of Day 1.
  
-Using the information in Table J.8,and either the FCFS,SPT or EDD rule,what is the fewest number of late jobs possible?

Accepted Answer

A) no late jobs 
B) one late job 
C) two late jobs 
D) three late jobs 
A) no late jobs 
B) one late job 
C) two late jobs 
D) three late jobs

Question 13

________ specify the job processing sequence when several jobs are waiting in line at a workstation.

Accepted Answer

Priority s

Question 14

Table J.17
A company must take on seven new projects.Each project has a planning stage and a design stage,and the planning stage must be completed before the design stage can begin.Also,two project teams are available to work on these projects: Team 1 works only on planning stages of projects,and Team 2 works only on design stages of projects.The times to complete the project stage,in days,are shown in the following table.
  
-Using the information in Table J.17 and Johnson's rule,on which day will project F be completed?

Accepted Answer

A) day 33 or earlier 
B) day 33-day 36 
C) day 37-day 40 
D) day 41 or later 
A) day 33 or earlier 
B) day 33-day 36 
C) day 37-day 40 
D) day 41 or later

Question 15

Table J.16
Five jobs are currently waiting to be processed.Each job has to go through Machine 1 first and then Machine 2 before it is completed.The processing times (in hours)for the five jobs on each machine are:
  
-Use the information in Table J.16.What is the makespan through both machines if the SPT rule is used to determine the sequence at Machine 1 and the same sequence is also used at Machine 2?

Accepted Answer

A) fewer than or equal to 27 hours 
B) greater than 27 hours but fewer than or equal to 28 hours 
C) greater than 28 hours but fewer than or equal to 29 hours 
D) greater than 29 hours 
A) fewer than or equal to 27 hours 
B) greater than 27 hours but fewer than or equal to 28 hours 
C) greater than 28 hours but fewer than or equal to 29 hours 
D) greater than 29 hours

Question 16

________ is the time a job spends in the service or manufacturing system.

Accepted Answer

The answer of ________ is the time a job spends...

Question 17

Develop an SPT sequence and calculate the average number of assignments Stu has this semester.

Accepted Answer

A) 3)36 
B) 3)52 
C) 3)78 
D) 3)94 
A) 3)36 
B) 3)52 
C) 3)78 
D) 3)94

Question 18

Table J.8
Auto Data produces custom engineering testing equipment.The following six jobs are currently in the design department.The time since each one arrived,the processing time,and the due date are shown below.All times are expressed in terms of days.Let now be the beginning of Day 1.
  
-Using the information in Table J.8 and the FCFS rule,what is the average days past due?

Accepted Answer

A) fewer than or equal to 5.0 days 
B) greater than 5.0 days but fewer than or equal to 8.0 days 
C) greater than 8.0 days but fewer than or equal to 9.0 days 
D) greater than 9.0 days 
A) fewer than or equal to 5.0 days 
B) greater than 5.0 days but fewer than or equal to 8.0 days 
C) greater than 8.0 days but fewer than or equal to 9.0 days 
D) greater than 9.0 days

Question 19

A workstation has five jobs that just arrived (the start of Day 1)to be processed,as shown in the following table.Use this information to sequence the five jobs using FCFS,SPT,EDD,S/RO,and CR.Calculate the average flow times,average early times,and average past due.

Accepted Answer

The answer of A workstation has five jobs that just...

Question 20

Table J.5
The following three jobs just arrived (end of hour 0)at Workstation A.They are the only ones waiting to be processed.
  
-Use the information in Table J.5.The operations sequence of jobs,using the critical ratio (CR)rule,is

Accepted Answer

A) 3-1-2 
B) 3-2-1 
C) 1-2-3 
D) 2-3-1 
A) 3-1-2 
B) 3-2-1 
C) 1-2-3 
D) 2-3-1

Exam 25: Operations Scheduling

The shortest processing time rule tends to produce a large variance in ________.

Table J.5 The following three jobs just arrived (end of hour 0)at Workstation A.They are the only ones waiting to be processed. -Use the information in Table J.5.The sequence of jobs using the slack per remaining operations (S/RO)rule,is:

Stu applies the critical ratio method to scheduling his assignments.Which assignment is the fourth one in his sequence?

What are single-dimension scheduling rules? Provide examples and discuss how each rule performs.

Use the information in the preceding table and sequence the six jobs using FCFS,SPT,and EDD.Calculate the average flow times,average early times,and average past due.

Table J.10 A workstation has six jobs waiting to be processed.They arrived at the end of Day 0 and it is now the beginning of Day 1.It is now time zero.Times are expressed in terms of days. -Using the information in Table J.10 and the earliest due date EDD)rule,what is the average flow time?

________ is the degree to which equipment,space,or the workforce is currently being used.

When choosing a priority sequencing rule:

The ________ priority sequencing rule is typically applied in a front-office customer service setting.

A job shop is accompanied by divergent flows and low-to-medium volume output rates.

________ specify the job processing sequence when several jobs are waiting in line at a workstation.

________ is the time a job spends in the service or manufacturing system.

Develop an SPT sequence and calculate the average number of assignments Stu has this semester.

A workstation has five jobs that just arrived (the start of Day 1)to be processed,as shown in the following table.Use this information to sequence the five jobs using FCFS,SPT,EDD,S/RO,and CR.Calculate the average flow times,average early times,and average past due.

Table J.5 The following three jobs just arrived (end of hour 0)at Workstation A.They are the only ones waiting to be processed. -Use the information in Table J.5.The operations sequence of jobs,using the critical ratio (CR)rule,is

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