Test-Bank-for-Heizer-Operations-Management-9e

38.Forward scheduling

a.begins with a delivery date, then offsets each operation one at a time, in reverse order

b.is well suited where the supplier is usually able to meet precise delivery dates

c.tends to minimize work-in-process inventory

d.assumes that procurement of material and operations start as soon as requirements are known

e.produces a schedule only if it meets the due date

d (Scheduling issues, moderate)

39.Which file contains important information regarding an item's flow through the shop?

a.item master file

b.work center master file

c.control files

d.routing file

e.None of the above provides information regarding an item's flow through the shop.

d(Scheduling process-focused facilities, moderate)

40.Which of these is not part of the planning files of a production planning and control system?

a.a progress file

b.a work center master file

c.an item master file

d.a routing file

e.They are all part of the planning files.

a(Scheduling process-focused facilities, moderate)

41.Which of the following files tracks work order progress?

a.work center master files

b.routing files

c.item master files

d.control files

e.None of the above tracks work order progress.

d(Scheduling process-focused facilities, moderate)

42.The production database containing information about each of the components that a firm produces or purchases is the

a.routing file

b.work center master file

c.control file

d.item master file

e.none of the above

d(Scheduling process-focused facilities, moderate)

43.The short-term scheduling activity called loading

a.assigns dates to specific jobs or operations steps

b.specifies the order in which jobs should be done at each center

c.assigns jobs to work centers

d.assigns workers to jobs

e.assigns workers to machines

c (Loading jobs, easy)

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44.The assignment method is

a.a method to highlight overloads in a given work center

b.a computerized method of determining appropriate tasks for an operation

c.a form of linear programming for optimally assigning tasks or jobs to resources

d.the same thing as the Gantt schedule chart

e.a method for achieving a balance between forward and backward scheduling

c (Loading jobs, moderate)

45.A scheduling technique used to achieve optimum, one-to-one matching of tasks and resources is

a.the assignment method

b.Johnson's rule

c.the CDS algorithm

d.the appointment method

e.the reservation method

a (Loading jobs, moderate)

46.Which of the following is an aid used to monitor jobs in process?

a.a Gantt load chart

b.the assignment method

c.a Gantt schedule chart

d.Johnson's rule

e.none of the above

c (Loading jobs, moderate)

47.A method of input-output control that uses a system of cards to limit the amount of work at a work center and also to control lead time and monitor backlog is

a.the assignment method

b.backward scheduling

c.forward scheduling

d.constant work-in-process or ConWIP

e.level material use

d (Loading jobs, easy)

48.If an assignment problem consists of 6 workers and 7 projects,

a.one worker will not get a project assignment

b.one worker will be assigned two projects

c.each worker will contribute work toward the seventh project

d.one project will not get a worker assigned

e.The problem cannot be solved by assignment method.

d (Loading jobs, moderate)

49.If an assignment problem consists of 5 workers and 4 projects,

a.one worker will not get a project assignment

b.one project will be assigned two workers

c.the fifth worker will split time among the four projects

d.one project will not get a worker assigned

e.The problem cannot be solved by assignment method.

a (Loading jobs, moderate)

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50. Three jobs are to be assigned to three machines. Cost for each job-machine combination appears in the table below. Perform the first two steps of the assignment method (subtract the smallest number in each row and subtract the smallest number in each column; then cover with straight lines). At this point in the problem-solving process

a. the row for Job 1 contains the values 5, 6, and 0

b. calculations are complete, and the problem is ready for an optimal set of assignments c. the column for Machine B indicates that it should be retired

d. Job 1 should be performed on Machine B e. Job 1 should be performed on Machine A

a (Loading jobs, difficult) {AACSB: Analytic Skills}

51.Orders are processed in the sequence in which they arrive if (the) ______ rule sequences the jobs.

a.earliest due date

b.slack time remaining

c.first come, first served

d.critical ratio

e.Johnson's

c (Scheduling jobs, moderate)

52.Which of the following dispatching rules ordinarily gives the best results when the criterion is lowest time for completion of the full sequence of jobs?

a.shortest processing time (SPT)

b.critical ratio (CR)

c.first in, first out (FIFO)

d.first come, first served (FCFS)

e.longest processing time

a (Scheduling jobs, moderate)

53.Five jobs are waiting to be processed. Their processing times and due dates are given below. Using the shortest processing time dispatching rule, in which order should the jobs be processed?

a.A, B, C, D, E

b.C, E, A, D, B

c.B, D, A, E, C

d.D, A, E, B, C

e.C, E, A, D, B

d (Scheduling jobs, moderate) {AACSB: Analytic Skills}

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54.Sequencing (or dispatching)

a.assigns dates to specific jobs or operations steps

b.assigns jobs to work centers

c.specifies the order in which jobs should be done at each center

d.assigns workers to jobs

e.assigns workers to machines

c(Scheduling jobs, moderate)

55.Five jobs are waiting to be processed. Their processing times and due dates are given below. Using the earliest due date dispatching rule, in which order should the jobs be processed?

a.C, E, A, D, B

b.A, B, C, D, E

c.B, D, A, E, C

d.C, B, A, E, D

e.none of the above

c (Scheduling jobs, moderate) {AACSB: Analytic Skills}

56.Flow time represents the time

a.an order spends waiting for processing at a work center

b.an order spends being processed at a work center

c.an order spends moving from one work center to another

d.to complete an order, including time spent in processing and in waiting

e.none of the above

d (Scheduling jobs, moderate)

57.Which of the following dispatching rules tends to minimize job flow time?

a.FCFS: first come, first served

b.SPT: shortest processing time

c.EDD: earliest due date

d.LPT: longest processing time

e.FCLS: first come, last served

b (Scheduling jobs, moderate)

58.Average completion time for a schedule sequence at a work center is the ratio of

a.total processing time to the number of jobs

b.total flow time to total processing time

c.total flow time to the number of jobs

d.total processing time plus total late time to the number of jobs

e.total flow time plus total late time to the number of jobs

c (Scheduling jobs, moderate)

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59.Eight jobs have been sequenced at a single work center. Total processing time for the eight jobs is 34 hours and total flow time for the sequence is 85 hours. For this schedule, utilization is ______

and average jobs in the system is ________.

a.100 percent; 10.625

b.low; .0941

c.0.400 or 40 percent; 2.5

d.0.235 or 23.5 percent; 4.25

e.maximized; minimized

c (Sequencing jobs, moderate) {AACSB: Analytic Skills}

60.Five welding jobs are waiting to be processed. Their processing times and due dates are given below. Using the critical ratio dispatching rule, in which order should the jobs be processed?

a.B, D, A, E, C

b.C, D, A, B, E

c.C, E, A, D, B

d.E, B, A, D, C

e.none of the above

b (Scheduling jobs, moderate) {AACSB: Analytic Skills}

61.Which critical ratio value implies that a job is already late?

a.more than 100

b.1

c.less than 1

d.10

e.none of the above

c (Scheduling jobs, moderate)

62.The priority rule which sequences jobs using the smallest ratio of due date to processing time is

a.critical ratio

b.earliest due date

c.first come, first served

d.longest processing time

e.shortest processing time

a (Scheduling jobs, moderate)

63.Which of the following is an advantage of the FCFS dispatching rule when used in services?

a.FCFS is easy to update.

b.FCFS minimizes the average number of jobs in the system.

c.FCFS minimizes the average lateness of all jobs.

d.FCFS maximizes the number of jobs completed on time.

e.FCFS seems fair to customers.

e (Scheduling jobs, moderate)

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64.The most appropriate sequencing rule to use if the goal is to dynamically track the progress of jobs and establish relative priority on a common basis is

a.shortest processing time

b.earliest due date

c.critical ratio

d.longest processing time

e.Johnson's rule

c (Scheduling jobs, moderate)

65.Use of the shortest processing time sequencing rule generally results in

a.maximum average lateness

b.maximum utilization

c.maximum effectiveness

d.minimum average flow time

e.none of the above

d (Scheduling jobs, moderate)

66.Which of the following dispatching rules is typically the best technique for taking first those jobs with the most urgent needs?

a.shortest processing time

b.critical ratio

c.earliest due date

d.longest processing time

e.none of the above

e (Scheduling jobs, moderate)

67.When a set of jobs must pass through two workstations whose sequence is fixed, ______ is the rule most commonly applied.

a.critical ratio

b.earliest due date

c.first come, first served

d.slack time remaining

e.Johnson's rule

e (Scheduling jobs, moderate)

68.A recent advance in short-term scheduling that makes use of expert systems and simulation in solving dynamic scheduling problems is

a.forward scheduling

b.backward scheduling

c.infinite scheduling

d.finite capacity scheduling

e.progressive scheduling

d (Finite capacity scheduling (FCS), moderate)

416

69.Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is contained in the table below. Each job requires work center Alpha before work center Beta. According to Johnson's rule, which job should be scheduled first?

a.R

b.S

c.T

d.U

e.V

d (Scheduling jobs, moderate) {AACSB: Analytic Skills}

70.Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is contained in the table below. Each job requires work center Sigma before work center Delta. According to Johnson's rule, what sequence of jobs will minimize the completion time for all jobs?

a.R-S-T-U-V

b.S-V-T-R-U

c.S-U-T-V-R

d.V-R-U-S-T

e.none of the above

c (Scheduling jobs, moderate) {AACSB: Analytic Skills}

71.Which of the following are limitations of rules-based dispatching systems?

a.Rules need to be revised to adjust to changes in orders, product mix, and so forth.

b.Rules may not recognize idle resources.

c.Rules may not recognize bottleneck resources

d.Rules may not be able to prioritize two jobs with identical due dates.

e.All of the above are limitations.

e (Scheduling jobs, moderate)

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72.Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is contained in the table below. Each job requires work center Alpha before work center Beta. According to Johnson's rule, what is the optimum sequence of jobs and the minimum time for completion of all jobs?

a.V-T-S-U-R; 225

b.U-R-T-S-V; 175

c.R-S-T-U-V; 240

d.U-S-V-T-R; 200

e.none of the above

d (Scheduling jobs, moderate) {AACSB: Analytic Skills}

73.Conventional MRP uses time buckets that do not recognize capacity limits, and in fact ignores capacity issues. A more realistic scheduling system that includes work center capacities and other resource availabilities is

a.aggregate planning

b.the master production schedule

c.finite capacity scheduling

d.the assignment method

e.level material use

c (Finite capacity scheduling (FCS), moderate) {AACSB: Use of IT}

74.Which of the following statements regarding finite capacity scheduling (FCS) is false?

a.Finite capacity scheduling allows delivery needs to be balanced against efficiency.

b.Finite capacity scheduling overcomes the disadvantages of systems based exclusively on rules.

c.Finite capacity scheduling allows virtually instantaneous change by operators.

d.Finite capacity scheduling software formalizes the same data needed in any manual system.

e.None; all of the above are true.

e (Finite capacity scheduling (FCS), moderate) {AACSB: Use of IT}

75.Which of the following statements regarding finite capacity scheduling (FCS) is false?

a.Finite capacity scheduling is well suited for dynamic scheduling environments.

b.Finite capacity scheduling overcomes the disadvantages of systems based exclusively on rules.

c.Finite capacity scheduling is very powerful, but does not allow for rapid changes.

d.Finite capacity scheduling often gets its data from the output of an MRP system.

e.None; all of the above are true.

c (Finite capacity scheduling (FCS), moderate) {AACSB: Use of IT}

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76.The theory of constraints has its origins in

a.linear programming theory

b.the theory of economies of scale

c.material requirements planning

d.the theory of finite capacity planning

e.Goldratt and Cox's book, The Goal: A Process of Ongoing Improvement

e(Theory of constraints, easy)

77.Which of the following techniques is not a technique for dealing with a bottleneck?

a.Schedule throughput to match capacity of the bottleneck.

b.Increase capacity of the constraint.

c.Have cross-trained employees available to keep the constraint at full operation.

d.Develop alternate routings.

e.All are tools for dealing with bottlenecks.

e (Theory of constraints, easy)

78.An appliance manufacturer assembles icemakers in large batches. The operations manager would like to significantly reduce the batch size. What would you suggest?

a.Use the SPT rule.

b.Use forward scheduling.

c.Use Gantt charts.

d.Use finite scheduling.

e.Develop level material use schedules.

e (Repetitive facilities, moderate)

79.Which of the following is not tracked by scheduling optimization systems used in retail stores?

a.cars parked in the parking lot

b.individual store sales

c.transactions

d.units sold

e.customer traffic

e (Scheduling services, moderate)

80.In “drum, buffer, rope,” what provides the schedule, i.e. the pace of production?

a.drum

b.buffer

c.rope

d.all three of the above in combination

e.none of the above

a (Scheduling services, moderate)

81.Which of the following is true regarding services scheduling?

a.The critical ratio sequencing rule is widely used for fairness to customers.

b.The emphasis is on staffing levels, not materials.

c.Reservations and appointments are often used to manipulate the supply of services.

d.Labor use can be intensive, and labor demand is usually stable.

e.All of the above are true.

b (Scheduling services, moderate)

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FILL-IN-THE BLANK

82.__________ scheduling begins with the due date and schedules the final operation first and the other job steps in reverse order.

Backward (Scheduling issues, moderate)

83.In the sequence of decisions that affect scheduling, __________ is (are) the immediate follower of the master schedule (or master production schedule).

short-term schedules (Scheduling issues, moderate)

84.Because facility capacity, set-up time, and run time are usually known, scheduling is often straightforward in _______ facilities.

product-focused or continuous (Scheduling issues, easy)

85.__________ is the assignment of jobs to work or processing centers.

Loading (Loading jobs, easy)

86.__________ is an input-output control system that uses cards to manage the amount of work in a work center.

ConWIP or continuous work-in-process (Scheduling process-focused facilities, moderate)

87.____________ are used to schedule resources and allocate time.

Gantt charts (Loading jobs, moderate)

88.The ______________ is a special class of linear programming models that involves assigning tasks or jobs to resources.

assignment method (Loading jobs, moderate)

89.________ determines the order in which jobs should be done at each work center.

Sequencing (Sequencing jobs, easy)

90.____________ determine the sequence of jobs in process-oriented facilities.

Priority rules (Sequencing jobs, easy)

91.The priority rule that appears fair to customers in service systems is __________. first come, first served (Sequencing jobs, easy)

92.An approach to sequencing that can handle the situation where jobs must pass through two or more work centers in a fixed sequence is _________.

Johnson's rule (Sequencing jobs in work centers, moderate)

93.______________ uses computerized short-term scheduling to overcome the disadvantages of rulebased systems by providing the user with interactive computing and graphical output.

Finite capacity scheduling (Finite capacity scheduling (FCS), moderate) {AACSB: Use of IT}

94.The _____________ is a body of knowledge that deals with anything that limits an organization's ability to achieve its goals.

theory of constraints (Theory of constraints, moderate)

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