Deck 14: Operations Scheduling and Sequencing

Question 1

In the context of sequencing,__________is the time needed to process a given set of jobs.

A) flow time
B) makespan
C) lateness
D) tardiness

Answer 1

makespan

Question 2

Five jobs are ready for processing at time zero through a workstation. The details of the processing time and the due date of completion is provided in the following table. Using the earliest due date (EDD) rule, the average flow time for the five jobs is _____.

A) more than 8 but less than or equal to 10 days.
B) more than 10 but less than or equal to 12 days.
C) more than 12 but less than or equal to 14 days.
D) more than 14 but less than or equal to 16 days.

Answer 2

more than 12 but less than or equal to 14 days.

Question 3

A movie theater requires the following minimum number of employees, each of whom is required to have two consecutive days off. Using the staff scheduling method, it is determined that the number of employees required as per the final employee schedule is _____.

A) 3
B) 4
C) 5
D) 6

Answer 3

5

Question 4

A new surgical facility called Cut & Sew has opened in the United States. The branches of the facility are spread throughout the country. These are job shops that handle a variety of outpatient surgical procedures. The process of the facility is set up in a way that one doctor will cut and another will sew. The data regarding the patients and the estimated time for cutting and sewing for each patient are given in the following table: Using Johnson's sequencing rule, the final sequence of the patients is _____.

A) A-B-C-D-E
B) B-E-A-C-D
C) C-A-B-E-D
D) D-A-B-E-C

Question 5

Two examples of process-focused performance measures for sequencing rules are tardiness and lateness.

Question 6

In a two-resource sequencing problem, _____.

A) the processing time for each job on each resource is unknown
B) flow time is maximized
C) the goal is to minimize makespan
D) a job can be processed by either of its resources in any sequence

Question 7

In the context of operations management, triage nurses deciding on the order in which emergency patients are to be treated is an example of _____.

A) appointing
B) sequencing
C) statistical forecasting
D) demand planning

Question 8

In the context of sequencing, the shortest processing time (SPT) rule tends to:

A) maximize the number of jobs in the system.
B) maximize average flow time.
C) minimize resource utilization.
D) minimize work-in-process inventory.

Question 9

The Clarke-Wright Heuristic Method is used to solve the common scheduling problem in logistics that involves determining routes from a central depot or warehouse to many customers.

Question 10

Gantt charts are used to:

A) develop a factory layout.
B) track inventory levels over time.
C) monitor planned schedules.
D) forecast personnel requirements.

Question 11

In the context of sequencing, the earliest due date (EDD) rule:

A) minimizes the maximum number of jobs past due.
B) maximizes average flow time of jobs past due.
C) maximizes resource utilization of jobs past due.
D) minimizes the average processing time of jobs past due.

Question 12

In the context of operations management,__________refers to the assignment of start and completion times to particular jobs, people, or equipment.

A) scheduling
B) appointing
C) statistical forecasting
D) demand planning

Question 13

An electronic gadgets store requires the following minimum number of employees, each of whom is required to have two consecutive days off. If there are no day offs provided on Thursday and Friday, the number of employees required to work on Thursday as per the final employee schedule is _____.

A) 9
B) 10
C) 11
D) 12

Question 14

Different industries use different software packages for scheduling because every industry has different problem structures.

Question 15

Five jobs are ready for processing at time zero through a workstation. The details regarding the processing time and the due date of completion is provided in the following table. Using the earliest due date (EDD) rule, the average tardiness of the five jobs is:

A) more than 0.1 but less than or equal to 0.3 day.
B) more than 0.3 but less than or equal to 0.5 day.
C) more than 0.5 but less than or equal to 0.7 day.
D) more than 0.7 but less than or equal to 0.9 day.

Question 16

A requirement of two-resource sequencing rule is that:

A) all jobs must begin at the same time.
B) each job must be processed first on the first resource and then on the second.
C) a maximum of two jobs can be processed at a time on each resource.
D) total processing time must be minimized.

Question 17

Five jobs are ready for processing at time zero through a workstation. The details of the processing time and the due date of completion is provided in the following table. Using the shortest processing time (SPT) rule, it can be concluded that the average flow time for these five jobs is _____.

A) more than 8 but less than or equal to 10 days.
B) more than 10 but less than or equal to 12 days.
C) more than 12 but less than or equal to 14 days.
D) more than 14 but less than or equal to 16 days.

Question 18

In the context of sequencing, the _____ minimizes the average lateness of a set of jobs.

A) shortest processing time rule
B) earliest due date rule
C) first come, first serve rule
D) fewest number of operations remaining rule

Question 19

There are five jobs in a factory. All these jobs have to go through two workstations for processing. Each job is processed on Workstation #1 and then on Workstation #2. The processing time for each job on each workstation is given below. Using Johnson's sequencing rule, it can be concluded that the makespan of the sequence is:

A) more than 50 but less than or equal to 100 minutes.
B) more than 100 but less than or equal to 150 minutes.
C) more than 150 but less than or equal to 200 minutes.
D) more than 200 but less than or equal to 250 minutes.

Question 20

Customized scheduling spreadsheets use readily available software such as Microsoft Excel, but may be rather expensive to develop.

Question 21

In the context of sequencing,__________is the difference between the completion time and the due date of a job.

A) flow time
B) makespan
C) lateness
D) tardiness

Question 22

Five jobs are ready for processing at time zero through a workstation. The details of the processing time and the due date of completion is provided in the following table. Using the earliest due date (EDD) rule, the average lateness for the five jobs is:

A) more than -6 but less than or equal to -2 days.
B) more than -2 but less than or equal to 2 days.
C) more than 2 but less than or equal to 6 days.
D) more than 4 but less than or equal to 8 days.

Question 23

In the context of sequencing,__________is the amount of time by which the completion time exceeds the due date of a job.

A) flow time
B) makespan
C) lateness
D) tardiness