Deck 23: Detailed Scheduling

Question 1

16)To minimize the size of queues in intermittent processes,schedulers need to address ______ major issues

A)three
B)four
C)two
D)five

Answer 1

A

Question 2

4)Scheduling decisions have ______ time horizons.

A)long-term
B)intermediate-term
C)short-term
D)prolonged term

Answer 2

C

Question 3

14)______ is concerned with regulating inputs to a work center in relation to output and available capacity so that the queues and waiting times of jobs can be managed and kept under control.

A)Input control
B)Input-output control
C)Process control
D)Capacity control

Answer 3

B

Question 4

18)______ is the assignment of jobs to work or processing centers.

A)Input-output control
B)Sequencing
C)Worker assignment
D)Loading

Question 5

7)Which of the following is NOT an objective of scheduling?

A)Resources such as equipment and labor are used effectively.
B)Overall costs are reduced.
C)Work-in-process inventories are maximized.
D)Productivity is increased by maximizing flow of goods and services through the system.

Question 6

2)Detailed production schedule is the ______ set of decisions in the hierarchy of operations decision for ______ organizations.

A)last,manufacturing
B)first,manufacturing
C)last,service
D)first,service

Question 7

12)Products are made to order,and each order has its own unique material and processing requirements,processing sequence,and processing times in ______ processes.

A)intermittent
B)machine
C)line
D)continuous

Question 8

5)______ is the process of making specific resources such as labor,equipment,and facilities to produce a product or deliver a service available.

A)Planning
B)Scheduling
C)Forecasting
D)Production

Question 9

20)______ type(s)of Gantt charts is/are used for scheduling decisions.

A)One
B)Two
C)Three
D)Four

Question 10

17)Which of the following is NOT one of the major issues to be addressed by schedulers in order to reduce the size of the queues in intermittent processes?

A)input-output control
B)loading
C)worker assignment
D)sequencing

Question 11

10)______ calculations are used to determine a schedule that allocates the capacity of the line among the several products.

A)Flow time
B)Run time
C)Lead time
D)Runout time

Question 12

15)The use of dams in rivers to control water flow is a simple example of ______.

A)water control
B)input-output control
C)process control
D)capacity control

Question 13

3)Monthly or weekly service schedule is the ______ set of decisions in the hierarchy of operations decision for ______ organizations.

A)last,manufacturing
B)first,manufacturing
C)last,service
D)first,service

Question 14

9)Scheduling for line processes is often referred to as ______.

A)cluster scheduling
B)flow-shop scheduling
C)batch scheduling
D)job-shop scheduling

Question 15

11)______ is a form of line process scheduling in which many of the scheduling decisions are predetermined when the production systems are designed.

A)Cluster scheduling
B)Job-shop scheduling
C)Flow-shop scheduling
D)Batch scheduling

Question 16

6)Scheduling decisions are typically ______ in scope.

A)extensive
B)widespread
C)narrow
D)broad

Question 17

8)______ are high-volume product processes that typically produce standardized products and require identical or similar operations.

A)Line processes
B)Intermittent processes
C)Machine processes
D)Outlier processes

Question 18

13)Which of the following statements is true about process scheduling?

A)Line process scheduling is considerably more complex than job-shop scheduling.
B)Line process scheduling and job-shop scheduling have the same level of complexity.
C)Job-shop scheduling is considerably more complex than line process scheduling.
D)It is difficult to determine the complexity of line process scheduling.

Question 19

1)In the hierarchy of decisions made in the field of operations,detailed scheduling is the ______ step before the actual manufacture of the product or delivery of service.

A)fourth
B)first
C)seventh
D)final

Question 20

19)Which of the following is NOT one of the objectives of loading decisions?

A)minimize idle time
B)minimize setup time
C)maximize processing time
D)minimize setup costs

Question 21

33)______ are simple decision rules that are used to select jobs for the next operation in order to control the flow of work as jobs progress through a single process,machine,or work center.

A)Scheduling rules
B)Sequencing rules
C)Priority rules
D)Job processing rules

Question 22

39)Jobs are ranked according to their due dates,and the job that has the earliest due date is processed first and completed in ______.

A)shortest processing time
B)earliest due date
C)longest processing time
D)critical ratio (CR)

Question 23

27)A scheduling process used to determine the approximate completion time for each job,the capacity required in each time period by beginning with the current date for those jobs that have known processing requirements,and loading the jobs forward in time is called ______.

A)current-date scheduling
B)forward scheduling
C)due-dates scheduling
D)backward scheduling

Question 24

31)Schedules may have to be revised frequently due to factors such as machine breakdowns,processing delays at work centers,and the like.This is the drawback of ______.

A)fixed loading
B)iterative loading
C)finite loading
D)infinite loading

Question 25

38)The ______ rule can be applied for scheduling in make-to-stock and make-to-order production systems.

A)shortest processing time
B)earliest due date
C)longest processing time
D)critical ratio (CR)

Question 26

35)______ is a dynamic sequencing rule that gives priority to those jobs that most urgently need work so that orders can be completed by the due date and shipped on schedule.

A)First come,first served
B)Shortest processing time
C)Critical ratio
D)Earliest due date

Question 27

29)In reality,most businesses generally use ______.

A)a combination of forward and backward scheduling
B)forward scheduling only
C)backward scheduling only
D)advanced scheduling

Question 28

26)The assignment method is a special case of a group of problems called ______ problems.

A)integer programming
B)network programming
C)work-flow optimization
D)linear programming

Question 29

36)The job is behind schedule when ______.

A)CR = 0
B)CR = 1
C)CR > 1
D)CR < 1

Question 30

28)A scheduling process used to determine in advance the capacity required at each work center for each time period to complete the jobs by the due dates by beginning with the due date for each job and loading the processing requirements for these jobs at each work center by proceeding backward in time is called ______

A)current-date scheduling
B)forward scheduling
C)due-dates scheduling
D)backward scheduling

Question 31

40)The formula for calculating critical ratio is ______.

A)Work remaining / Time remaining
B)Time remaining / Work remaining
C)Cost remaining / Time remaining
D)Time remaining / Cost remaining

Question 32

24)______ is a method applied to situations in which various resources must be allocated to activities on a one-to-one basis.

A)Time-series method
B)Assignment method
C)Integer programming
D)Linear analysis

Question 33

23)______ charts are used to monitor jobs in progress,show which jobs are on schedule,and which are ahead or behind schedule.

A)Gantt load
B)Gantt schedule
C)Gantt sequence
D)Gantt output

Question 34

34)The job that arrived first at a work center or machine will be processed first and completed.Which of the following priority rules does this statement represent?

A)first come,first served
B)shortest processing time
C)critical ratio
D)earliest due date

Question 35

32)______ is the process of determining the exact order or priority of job processing.

A)Sequencing
B)Scheduling
C)Prioritizing
D)Job processing

Question 36

22)______ charts show the loads on various work centers,equipment,or facilities as well as the associated idle times.

A)Gantt load
B)Gantt schedule
C)Gantt sequence
D)Gantt output

Question 37

25)______ is a technique used to optimize an objective (such as maximizing profits or minimizing costs)under certain constraints,such as availability of resources.

A)Integer programming
B)Assignment method
C)Linear programming
D)Work-flow optimization

Question 38

37)Critical ratio (CR)= 1 implies ______.

A)the job is completed
B)the job is ahead of schedule
C)the job is on schedule
D)the job is behind schedule

Question 39

30)______ is the preferred loading approach in the scheduling phase because it takes into account the actual processing times of jobs and the available capacity at each work center.

A)Finite loading
B)Infinite loading
C)Fixed loading
D)Iterative loading

Question 40

21)______ are visual tools that can be used to make decisions in intermittent processes.

A)Gantt charts
B)Assignment methods
C)Pie charts
D)Milestone charts

Question 41

41)The job is ahead of schedule when ______.

A)CR = 1
B)CR < 1
C)CR = 0.5
D)CR > 1

Question 42

42)Which of the following is NOT an assumption required for the use of priority rules?

A)The set of jobs to be processed is known and does not change.
B)Setup times are dependent on job processing sequence.
C)Setup times and processing times are known and do not vary.
D)There are no unexpected interruptions in job processing.

Question 43

56)The average tardiness for the job listed in the table below under the longest processing time (LPT)rule is ______.

A)16 days
B)14 days
C)15 days
D)13 days

Question 44

48)______ is the time that the completion of an actual job exceeds its due date.

A)Average job tardiness
B)Average flow time
C)Makespan
D)Processing time

Question 45

55)The average flow time for the jobs listed in the table below under the longest processing time (LPT)rule is ______.

A)27.4 days
B)24.4 days
C)23.4 days
D)26.7 days

Question 46

50)Which of the following is NOT a part of the average job flow time?

A)transportation time
B)actual processing time
C)waiting time
D)customer delivery time

Question 47

44)______ is the total length of time that a job spends at a work center from the point of arrival to the point where it leaves the work center.

A)Job flow time
B)Job completion time
C)Job tardiness
D)Job processing time

Question 48

47)______ is the total time needed to complete a group of jobs starting with the first job until the completion of the last job.

A)Average job tardiness
B)Average flow time
C)Makespan
D)Processing time

Question 49

43)Which of the following is NOT a performance evaluation criterion for priority rules?

A)average job flow time
B)average number of jobs in the system
C)average job tardiness
D)average job setup time

Question 50

54)Determine the longest processing time (LPT)sequence for the jobs listed in the following table.

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

Question 51

60)______ steps are necessary to implement Johnson's rule.

A)Six
B)Three
C)Four
D)Five

Question 52

52)The average tardiness for the jobs listed in the following table under the FCFS (first come,first served)rule is ______.

A)11 days
B)9.8 days
C)15 days
D)8 days

Question 53

53)The average number of jobs in the work center for the jobs listed in the following table under the FCFS (first come,first served)rule is ______.

A)3.5
B)2.1
C)3.23
D)2.79

Question 54

51)Determine the FCFS (first come,first served)sequence for the jobs listed in the following table.Assume that the jobs have arrived in the order listed in the table.

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

Question 55

46)The average number of jobs in the system is the surrogate measure for ______.

A)average work-in-process inventory
B)average process inventory
C)average job tardiness
D)average finished goods inventory

Question 56

49)Total flow time of all the jobs divided by the number of jobs gives the ______.

A)average processing time
B)average job flow time
C)average job tardiness
D)average job setup time

Question 57

45)The formula for calculating the average number of jobs in the system is ______.

A)Total processing time / Makespan
B)Total setup time / Makespan
C)Total flow time / Makespan
D)Makespan / Total processing time

Question 58

59)Which of the following is NOT an ideal situation to implement Johnson's rule?

A)There are no work-in-process inventory storage problems.
B)There are no overriding individual job priorities.
C)The same processing sequence is maintained on either processes,machines,or work centers.
D)There are overriding individual job priorities.

Question 59

58)Which of the following is the objective of Johnson's rule?

A)minimize makespan
B)maximize makespan
C)maximize average flow time
D)minimize critical ratio

Question 60

57)For sequencing N jobs through two machines,processes,or work centers in the same order,_________ provides the most efficient method.

A)priority rules
B)Johnson's rule
C)batch rule
D)process rule

Question 61

78)Which of the following is FALSE about service environment,typically not encountered in manufacturing environment?

A)It is not possible to store or inventory services.
B)Services are not difficult to schedule because they are not typically labor intensive.
C)The fluctuating demand for services and the need to customize services for individual customers makes scheduling services more difficult.
D)Service schedules are constrained by legal requirements and union contracts.

Question 62

75)A scheduling system for service organizations that uses computerized systems to maximize customer satisfaction by smoothing out demand for their services in any given time is a(n)______.

A)reservation system
B)prioritization system
C)appointment system
D)capacity utilization system

Question 63

73)Which of the following is NOT a performance measure used by theory of constraints to evaluate the effectiveness of improvements?

A)increased throughput
B)reduction in inventory
C)reduction in throughput
D)reduction in operating expense

Question 64

74)A scheduling system for a service organization that minimizes customer or client waiting time while maximizing the labor and capacity utilization of the service system by designating specific times for clients to arrive is a(n)______.

A)reservation system
B)prioritization system
C)appointment system
D)capacity utilization system

Question 65

76)The process of coordinating scheduling decisions made by any member of a supply chain with the decisions of other supply chain partners is called ______.

A)supply chain scheduling
B)supply partners scheduling
C)decision scheduling
D)hierarchical scheduling

Question 66

71)The theory of constraints uses ______ performance measures to evaluate whether the effectiveness of the improvements made has enabled the system to make more money.

A)two
B)three
C)four
D)five

Question 67

79)For bottleneck operations the process batch size should be ______ and the transfer batch size should be ______.

A)large,small
B)small,large
C)small,small
D)large,large

Question 68

61)Computerized short-term scheduling is often referred to as ______.

A)finite capacity scheduling (FCS)
B)infinite capacity scheduling (ICS)
C)regular capacity scheduling (RCS)
D)variable capacity scheduling (VCS)

Question 69

72)______ steps can be used to implement the theory of constraints,beginning with the bottleneck operation.

A)Two
B)Three
C)Four
D)Five

Question 70

69)______ is the lot-size quantity of a product processed at a work center.

A)Transfer batch
B)Delivery batch
C)Process batch
D)Product batch

Question 71

66)In DBR (drum-buffer-rope),which of the following is referred to as the drum?

A)scarce resources
B)inventory
C)raw materials
D)work stations

Question 72

64)Which of the following statements is FALSE about bottleneck operation?

A)The bottleneck resource should never be kept idle.
B)The bottleneck resource should always be fully staffed.
C)The bottleneck resources should be used to support the nonproductive resources.
D)Production should be synchronized based on the requirement of the bottleneck operation.

Question 73

70)______ is the quantity of units that is transported from one work center to the next.

A)Transfer batch
B)Delivery batch
C)Process batch
D)Product batch

Question 74

67)In DBR (drum-buffer-rope),which of the following is the mechanism that synchronizes or subordinates all other resources and decisions to the activities of the drum in order to maximize its effectiveness?

A)drum
B)buffer
C)rope
D)schedule

Question 75

65)______ is a planning and scheduling method that assumes that within any manufacturing system there are a limited number of scarce resources,and they control the overall output of that system.

A)Finite capacity scheduling
B)Advanced planner and optimizer (APO)
C)Manufacturing execution system (MES)
D)Drum-buffer-rope (DBR)

Question 76

68)The two different ways of assessing batch sizes developed by Eli Goldratt are ______.

A)process batch and product batch
B)process batch and transfer batch
C)transfer batch and product batch
D)transfer batch and delivery batch

Question 77

77)From a sustainability perspective,one of the key areas of concern for many manufacturing firms is ______.

A)operating expenses
B)throughput
C)energy consumption
D)excess inventory

Question 78

63)Resource use in a manufacturing process is typically uneven,and in order to achieve a balanced flow of work through the process,the bottleneck resource should be controlled.This is the basic principle of ______.

A)computerized short-term scheduling
B)theory of constraints
C)Johnson's rule
D)priority rule

Question 79

62)Which of the following is NOT one of the steps that managers take to mitigate scheduling problems?

A)Lot splitting can be used for large orders when there are significant differences in job processing times.
B)Scheduling should be based on the capacity of the operations that are bottlenecks if there are capacity constraints in the facility.
C)The due dates set for order delivery should be realistic and should take existing loads on work centers and available capacities into account.
D)Scheduling should be focused on customer orders and delivery by due dates.

Question 80

80)Which of the following is NOT an advantage of the DBR (drum-buffer-rope)method?

A)maximizes the output rate
B)reduces lead times
C)maximizes the need for holding inventory
D)minimizes schedule disruptions