Deck 16: Job and Staff Scheduling

Question 1

Scheduling work centre loading must be completed before starting materials requirement planning (MRP).

Answer 1

False

Question 2

In job scheduling,most loading of work centres is based on infinite loading.

Answer 2

False

Question 3

Sequencing is concerned with the order in which jobs are processed,while loading is concerned with assigning jobs to work centres or workstations.

Answer 3

True

Question 4

Input/output (I/O)control refers to monitoring changes in productivity for various work centres in a process.

Question 5

Make-span is the total time needed to complete a group of jobs.

Question 6

A load chart only designates the total load for work centres not the timing of jobs.

Question 7

All priority rules are designed to ensure that the most urgent jobs (earliest due date)are scheduled first.

Question 8

A schedule/control Gantt chart can be used to monitor job progress.

Question 9

Backward scheduling is based on working back from the due dates for jobs.

Question 10

Loading refers to the assignment of jobs to work centres.

Question 11

Priority rules generally assume that a job's setup time is independent of the sequence of processing jobs.

Question 12

The term loading,as used in scheduling,refers to choosing the sequence of jobs to process.

Question 13

Forward scheduling is based on completing jobs exactly on their due date.

Question 14

A Gantt chart is a visual aid for loading,scheduling,and control purposes.

Question 15

In the production planning hierarchy,scheduling is the final step before the actual output is produced.

Question 16

First come,first served (FCFS)is an example of a priority rule for sequencing.

Question 17

A Gantt chart is a specialized scheduling tool specifically for planning construction projects.

Question 18

The Theory of Constraints focuses on developing schedules for part-time workers or overtime shifts to address capacity constraints.

Question 19

Finite loading does not account for the capacity of work centres.

Question 20

Input/Output (I/O)control is a visual representation of the progress of jobs that indicates if they are ahead or behind schedule.

Question 21

A major reason for scheduling difficulty is variability in setup times,processing times,interruptions,and changes in the set of jobs.

Question 22

The primary limitation of the first come,first served (FCFS)priority rule is that short jobs will tend to delay longer jobs that follow.

Question 23

Bottlenecks occur at work centres when the idle time is equal to zero.

Question 24

For service systems with customers directly involved in the process,FCFS is the dominant priority rule.

Question 25

The elimination of idle time on both bottleneck and non-bottleneck operations is equally important.

Question 26

Which of the following is the last step in the production planning hierarchy before actual output is produced?

A) Material requirements planning.
B) Enterprise resource planning.
C) Capacity planning.
D) Aggregate planning.
E) Scheduling.

Question 27

For a one machine/station shop,the shortest (imminent)processing time (SPT)priority rule will always result in the lowest average flow time.

Question 28

For the Theory of Constraints,the transfer batch denotes a portion of the production lot that could be moved to the bottleneck operation.

Question 29

An area in a production facility consisting of one or more workers and machines with similar capabilities that can be considered one unit for the purpose of scheduling is a:

A) job shop.
B) bottleneck.
C) work team.
D) cell layout.
E) work centre.

Question 30

The inability to store services makes staff scheduling for services more complex than for manufacturing companies.

Question 31

Job scheduling pertains to:

A) hiring workers.
B) capacity planning.
C) buying machinery.
D) timing the use of work centres.
E) all of the choices.

Question 32

As long as the bottleneck operations are used effectively,the idle time of non-bottleneck operations will not affect the overall productivity of the system.

Question 33

The shortest processing time (SPT)rule minimizes downstream idle time.

Question 34

For services,the process of assigning work shifts to staff begins with forecasting the amount of work to be done during each hour (or shift)during the time period the schedule is being planned.

Question 35

Splitting a large lot at one or more operations after a bottleneck operation would reduce the waiting time of the bottleneck operation.

Question 36

Johnson's rule is a technique used to sequence jobs through a two-step work sequence.

Question 37

A schedule/control Gantt chart depicts jobs or their components versus time to illustrate if they are behind or ahead of schedule.

Question 38

The output of the system is limited by the output of the bottleneck operation(s).

Question 39

All priority or dispatching rules involve complex computations intended to establish an optimal processing sequence for production facilities.

Question 40

A basic difference between staff scheduling in services and manufacturing companies is the of demand for end products in manufacturing is more volatile in contrast to relatively uniform,predictable demand in services.

Question 41

The scheduling sequencing rule which always results in the lowest average flow (flow)time is the:

A) critical ratio (CR).
B) earliest due date (EDD).
C) first come, first serve (FCFS).
D) minimum slack time (MST).
E) shortest processing time (SPT).

Question 42

As a performance measure in scheduling,job flow time includes:
I)movement time between operations.
II)processing time.
III)idle time.

A) I only
B) II only
C) II and III only
D) I and II only
E) I, II, and III

Question 43

Assigning jobs to work centres and to various machines within each work centre describes:

A) loading.
B) staff scheduling.
C) material requirements planning.
D) capacity planning.
E) capacity utilization.

Question 44

In the drum-buffer-rope conceptualization used in the theory of constraints,the "buffer" refers to:

A) inventory just before the bottleneck.
B) the bottleneck of the process.
C) total capacity of the process.
D) first stage in the process.
E) the master schedule.

Question 45

Scheduling that starts with the present time and continues into the future is called:

A) detailed scheduling.
B) staff scheduling.
C) master production scheduling.
D) forward scheduling.
E) backward scheduling.

Question 46

A scheduling rule used for sequencing jobs through two work centres is:

A) critical ratio rule.
B) Johnson's rule.
C) minimum slack time rule.
D) shortest processing time rule.
E) earliest due date rule.

Question 47

Average job flow time for a schedule sequence at a work station is:

A) total processing time divided by the number of jobs.
B) total flow time divided by the number of jobs.
C) total flow time divided by total processing time.
D) total processing time plus total late time divided by number of jobs.
E) total flow time plus total late time divided by number of jobs.

Question 48

A schedule/control Gantt chart is a visual representation of progress on the shop-floor which shows _______ on a vertical axis,and _______ on the horizontal axis.

A) jobs in progress; time
B) jobs in progress; total costs
C) hours worked; jobs in progress
D) total costs; jobs in progress
E) actual output; actual input

Question 49

In the drum-buffer-rope conceptualization used in the theory of constraints,the "drum" that sets the pace for production refers to:

A) work-in-process inventory before the bottleneck.
B) the bottleneck of the process.
C) total capacity of the process.
D) first stage in the process.
E) the master schedule.

Question 50

Input/Output (I/O)control is used to:
I)manage work flows and queues at a work centre.
II)prevent overloading or underutilization of a work centre.
III)minimize WIP at a work centre.

A) I only
B) II only
C) III only
D) I and II only
E) I, II, and III

Question 51

The total time needed to complete a group of jobs from the beginning of the first job to the completion of the last job is called the:

A) job flow time.
B) make-span.
C) earliest due date (EDD).
D) delivery time.
E) average WIP.

Question 52

Two different approaches to load work centres in job scheduling are:

A) economic order quantity (EOQ) and material requirements planning (MRP).
B) Gantt charts and shop-floor control.
C) infinite loading and finite loading.
D) linear programming and trial-and-error.
E) none of the choices.

Question 53

Assigning jobs to work centres without regard to the available capacity of the work centres describes:

A) backward loading.
B) forward loading.
C) finite loading.
D) infinite loading.
E) capacity loading.

Question 54

The priority rule where jobs are processed according to the smallest ratio of time until due date to processing time is:

A) critical ratio (CR).
B) earliest due date (EDD).
C) first come, first serve (FCFS).
D) minimum slack time (MST).
E) shortest processing time (SPT).

Question 55

Which of the following is not a "tool" (technique)for shop-floor control?

A) Anticipated delay report
B) Input/output (I/O) control
C) Daily dispatch lists
D) Product structure tree
E) Schedule/control Gantt chart

Question 56

Monitoring and managing the work flow at each work centre on the shop-floor of a production facility is called:

A) lot sizing.
B) inventory turnover.
C) daily dispatch lists.
D) Gantt chart.
E) Input/output (I/O) control.

Question 57

Which sequencing rule is designed specifically to minimize job lateness?

A) Critical ratio (CR)
B) Earliest due date (EDD)
C) First come, first serve (FCFS)
D) Minimum slack time (MST)
E) Shortest processing time (SPT)

Question 58

Which of the following is not a measure for judging the effectiveness of a schedule sequence?

A) Average work-in-process
B) Total processing time
C) Job flow time
D) Job lateness
E) All of the choices

Question 59

Finite loading,as compared to infinite loading,assumes that:

A) there are a finite number of jobs to be done.
B) work centres can be loaded without regard to their capacity.
C) work centres' capacity must be taken into account in assigning jobs.
D) work centres' capacity will be increased as needed after assigning jobs.
E) none of the choices.

Question 60

The purpose of a Gantt chart is to:

A) visually express the capacity of resources.
B) quantitatively analyze the optimum sequencing of resources.
C) visually represent the loading and scheduling of jobs for control purposes.
D) quantitatively analyze the capacity of production resources.
E) none of the choices.

Question 61

Shift scheduling for services involves:
I)forecasting the amount of work to be done per time period.
II)assigning shifts to staff based on skill and availability.
III)converting work per time period into number of workers required.

A) I only
B) II only
C) III only
D) II and III only
E) I, II, and III

Question 62

If Jack uses the first come,first served (FCFS)priority rule to schedule these jobs,what will be the average flow time?

A) 3 hours
B) 5 hours
C) 7 hours
D) 7.2 hours
E) 8 hours

Question 63

Using the CR rule,the sequence of jobs would be:

A) c-a-b-d-e.
B) a-b-d-e-c.
C) d-e-b-a-c.
D) c-a-b-e-d.
E) e-d-b-a-c.

Question 64

If he uses the earliest due date first (EDD)priority rule to schedule these jobs,what will be the average job lateness?

A) 0 hours
B) 1.5 hours
C) 1.75 hours
D) 2 hours
E) 2.25 hours

Question 65

The sequence that would result using the SPT rule is:

A) e-b-c-d-a.
B) c-a-b-e-d.
C) a-d-c-e-b.
D) d-e-b-a-c.
E) e-d-b-a-c.

Question 66

For the jobs listed below,which processing sequence would result using Johnson's Rule?

A) c-a-d-b
B) b-d-a-c
C) a-b-c-d
D) d-c-b-a
E) c-a-b-d

Question 67

If Jack uses the earliest due date first (EDD)priority rule to schedule these jobs,what will be the average job lateness?

A) 2 hours
B) 2.2 hours
C) 2.33 hours
D) 2.4 hours
E) 3 hours

Question 68

If he uses the first come,first served (FCFS)priority rule to schedule these jobs,what will be the average flow time?

A) 7.5 hours
B) 5 hours
C) 3 hours
D) 2.5 hours
E) 2 hours

Question 69

If he uses the shortest processing time first (SPT)priority rule to schedule these jobs,what will be the average WIP in his shop today?

A) 0 jobs
B) 1 job
C) 2 jobs
D) 3 jobs
E) 4 jobs

Question 70

In scheduling staff for services,flexible capacity is achieved by:

A) part time workers and the timing of shifts.
B) using Johnson's rule.
C) offering incentives for customers to come during non-peak hours.
D) maintaining inventory.
E) none of the choices.

Question 71

Using the EDD rule,the sequence of jobs would be:

A) d-e-b-a-c.
B) a-d-c-b-e.
C) e-d-b-a-c.
D) a-d-c-e-d.
E) e-b-c-d-a.

Question 72

If Jack uses the shortest processing time first (SPT)priority rule to schedule these jobs,what will be the average flow time?

A) 3 hours
B) 5 hours
C) 7 hours
D) 7.2 hours
E) 8 hours

Question 73

Using the MST rule,the sequence of jobs would be:

A) c-a-b-d-e.
B) a-b-d-e-c.
C) d-e-b-a-c.
D) c-a-b-e-d.
E) e-d-b-a-c.

Question 74

What is the optimum job sequence for the jobs listed below,using Johnson's Rule?

A) e-g-f-d
B) d-g-f-e
C) d-f-g-e
D) e-d-f-g
E) f-e-d-g

Question 75

If he uses the shortest processing time first (SPT)priority rule to schedule these jobs,what will be the average flow time?

A) 7.5 hours
B) 5 hours
C) 3 hours
D) 2.5 hours
E) 2 hours

Question 76

A primary reason why staff scheduling in services can be more challenging than it is for manufacturing is:

A) services have less processing variability.
B) services cannot be inventoried.
C) people generally are willing to wait longer for manufactured products.
D) customers will not wait for services.
E) all services use appointments that have to match customers' schedules.

Question 77

If he uses the shortest processing time first (SPT)priority rule to schedule these jobs,what will be the average job lateness?

A) 0 hours
B) 1.5 hours
C) 1.75 hours
D) 2 hours
E) 2.25 hours

Question 78

The Theory of Constraints focuses on ________.

A) work-in-process inventory
B) total processing time
C) bottleneck operations
D) job sequencing
E) none of the choices above

Question 79

If Jack uses the shortest processing time first (SPT)priority rule to schedule these jobs,what will be the average job lateness?

A) 2 hours
B) 2.2 hours
C) 2.33 hours
D) 2.4 hours
E) 3 hours

Question 80

If Jack uses the shortest processing time first (SPT)priority rule to schedule these jobs,what will be the average WIP in his shop today?

A) 2 jobs
B) 2.33 jobs
C) 2.4 jobs
D) 2.67 jobs
E) 3 jobs