Question 1

A work center had planned outputs of 10,15,13,and 20 hours with actual outputs of 12,14,13,and 18 hours.What is the cumulative deviation in output?

Accepted Answer

A) 0 
B) 1 
C) -1 
D) 58 
E) Unable to determine with the given information 
A) 0 
B) 1 
C) -1 
D) 58 
E) Unable to determine with the given information C

Question 2

In services,the scheduling emphasis is usually on staffing levels,not materials.

Accepted Answer

A) True 
 B)False  True

Question 3

Scheduling optimization systems used in retail stores typically track customer traffic in 4-hour time increments.

Accepted Answer

A) True 
 B)False  False

Question 4

Jack's Refrigeration Repair is under contract to repair,recondition,and/or refurbish commercial and industrial icemakers from restaurants,seafood processors,and similar organizations.Jack currently has five jobs to be scheduled,shown in the order in which they arrived.
   (a)Complete the following table.(Show your supporting calculations below).
(b)Which dispatching rule has the best score for flow time?
(c)Which dispatching rule has the best score for work-in-process (jobs in the system)?
(d)Which dispatching rule has the best score for lateness?

Accepted Answer

(a)A summary of calculations appears in

Question 5

What does the use of the shortest processing time sequencing rule generally produce?

Accepted Answer

A) maximum average lateness 
B) maximum utilization 
C) maximum effectiveness 
D) minimum average flow time 
E) B and D 
A) maximum average lateness 
B) maximum utilization 
C) maximum effectiveness 
D) minimum average flow time 
E) B and D

Question 6

The short-term scheduling activity called "loading":

Accepted Answer

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. 
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.

Question 7

Bob Dresser operates a major appliance warranty service center.His operation has two check stations that are required at the end of every repair task performed by his appliance repair staff.These are the Functionality Review (FR)and the Overall Scan (OS).The FR must be performed successfully before the OS is begun.On Friday morning,six repair jobs are completed,awaiting these two inspection activities.Processing times are given in minutes.
   a.What is the optimal sequence of jobs for the objective of minimizing the total flow time?
b.Show your work,and document the sequence.
c.Chart the solution to this problem.
d.What jobs are being processed at time period 90?
e.What is the total flow time of this problem?

Accepted Answer

(a)The optimal sequence is F-D-B-A-C-E.(

Question 8

The following jobs are waiting to be processed at your work center,which cleans valve body castings.Job numbers are assigned sequentially upon arrival in the facility (a missing number means that job does not require your work center).All dates are specified as days from today.
   a.In what sequence should the jobs be processed according to the FCFS scheduling rule?
b.In what sequence should the jobs be processed according to the EDD scheduling rule?
c.In what sequence should the jobs be processed according to the SPT scheduling rule?
d.In what sequence should the jobs be processed according to the LPT scheduling rule?
e.In what sequence should the jobs be processed according to the critical ratio scheduling rule?

Accepted Answer

FCFS: 101,102,104,107,108
EDD:

Question 9

Which of the following statements regarding scheduling at Delta Airlines is FALSE?

Accepted Answer

A) About one flight in twenty is disrupted by weather events. 
B) Schedule changes at one airport have a ripple effect that may have impacts in many others. 
C) Delta's high-tech computer and communications system is located in Atlanta. 
D) Delta's rapid rescheduling uses mathematical scheduling models. 
E) Delta's rapid rescheduling promotes air safety and limits traveler inconvenience,but has not resulted in money savings for Delta. 
A) About one flight in twenty is disrupted by weather events. 
B) Schedule changes at one airport have a ripple effect that may have impacts in many others. 
C) Delta's high-tech computer and communications system is located in Atlanta. 
D) Delta's rapid rescheduling uses mathematical scheduling models. 
E) Delta's rapid rescheduling promotes air safety and limits traveler inconvenience,but has not resulted in money savings for Delta.

Question 10

With forward scheduling,jobs are scheduled as late as possible within the time allowed by the customer due dates.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is an aid used to monitor jobs in progress?

Accepted Answer

A) a Gantt load chart 
B) the assignment method 
C) a Gantt schedule chart 
D) Johnson's rule 
E) a Gantt progress chart 
A) a Gantt load chart 
B) the assignment method 
C) a Gantt schedule chart 
D) Johnson's rule 
E) a Gantt progress chart

Question 12

The assignment method is:

Accepted Answer

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. 
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.

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

The answer of The ________ is a special class of...

Question 15

A firm that specializes in desktop publishing for local charities has agreed to take on the following jobs.The firm has not decided which dispatching rule to apply in order to prioritize the jobs and fix them into the schedule.All dates are specified as days from today.
   a.Complete the following table.Show your supporting calculations below.
b.Which dispatching rule has the best score for flow time?
c.Which dispatching rule has the best score for work-in-process (jobs in the system)?
d.Which dispatching rule has the best score for lateness?

Accepted Answer

(a)The table of results appears below.A

Question 16

What are some limitations of rule-based scheduling systems?

Accepted Answer

Three limitations are (1)Rules need to b

Question 17

Johnson's rule sequences a set of jobs through two different machines or work centers in the same order.

Accepted Answer

A) True 
 B)False

Question 18

What is the difference between a Gantt load chart and a Gantt scheduling chart?

Accepted Answer

The Gantt load chart indicates a planned

Question 19

What is the objective of scheduling?

Accepted Answer

A) maximize quality 
B) minimize cost 
C) minimize response time 
D) prioritize and allocate demand to available facilities 
E) minimize lead time 
A) maximize quality 
B) minimize cost 
C) minimize response time 
D) prioritize and allocate demand to available facilities 
E) minimize lead time

Question 20

What is the assignment method?

Accepted Answer

The assignment method is a spe

Exam 15: Short-Term Scheduling

A work center had planned outputs of 10,15,13,and 20 hours with actual outputs of 12,14,13,and 18 hours.What is the cumulative deviation in output?

In services,the scheduling emphasis is usually on staffing levels,not materials.

Scheduling optimization systems used in retail stores typically track customer traffic in 4-hour time increments.

What does the use of the shortest processing time sequencing rule generally produce?

The short-term scheduling activity called "loading":

Which of the following statements regarding scheduling at Delta Airlines is FALSE?

With forward scheduling,jobs are scheduled as late as possible within the time allowed by the customer due dates.

Which of the following is an aid used to monitor jobs in progress?

The assignment method is:

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

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

What are some limitations of rule-based scheduling systems?

Johnson's rule sequences a set of jobs through two different machines or work centers in the same order.

What is the difference between a Gantt load chart and a Gantt scheduling chart?

What is the objective of scheduling?

What is the assignment method?

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