Question 1

Scheduling problems occur almost exclusively in manufacturing.

Accepted Answer

A) True 
 B)False  False

Question 2

When several products share common facilities, product sequencing affects cost.

Accepted Answer

A) True 
 B)False  True

Question 3

Explain why any sequence chosen in the single-machine scheduling problem will not change makespan time.

Accepted Answer

The total processing time for all jobs is constant; it is simply the sum of the individual processing times, which is sequence independent. M = C - S where
M = makespan of a group of jobs
C = completion time of last job in the group
S = start time of first job in the group
so it doesn't change.

Question 4

A new surgical facility called Cut & Sew is opening in neighborhoods throughout the United States. They are job shops that handle a variety of outpatient surgical procedures. Their process is set up so that one doctor cuts and the other sews. They have five patients to sequence for tomorrow. Since the weather forecast is for a cool and sunny day, they would also like to play golf tomorrow. They want to sequence their patients with the objective of minimizing the time from the beginning of the first job until the finish of that job. The patients and estimated times are as follows:
 $$\begin{array} { c c c } 
\text { Patent } & \text { Cut Time hours) } & \text { Sew Time hours) } \
\text { A } & 2.3 & 2.8 \
\text { B } & 2.5 & 3.0 \
\text { C } & 2.0 & 1.5 \
\text { D } & 0.6 & 1.0 \
\text { E } & 3.6 & 2.6
\end{array}$$ 
Sequence the patients using Johnson's Method, state the schedule for each operation, and determine the minimum makespan.

Accepted Answer

D A B E C
 \[\begin{array} { | c | c | c

Question 5

Scheduling refers to specifying

Accepted Answer

A) The sequence that jobs must be completed 
B) The due date for each job 
C) The start and completion times of jobs 
D) The makespan of each job 
A) The sequence that jobs must be completed 
B) The due date for each job 
C) The start and completion times of jobs 
D) The makespan of each job

Question 6

In practice, whenever processing times of a set of jobs are about equal, managers typically use a first-come, first-serve rule.

Accepted Answer

A) True 
 B)False

Question 7

Considering a two-resource sequencing problem,

Accepted Answer

A) The makespan is the same for any sequence of jobs 
B) Flow time is minimized 
C) The goal is to minimize makespan 
D) Each job can be processed by either resource first 
A) The makespan is the same for any sequence of jobs 
B) Flow time is minimized 
C) The goal is to minimize makespan 
D) Each job can be processed by either resource first

Question 8

A lateness measure can only be 0 or a positive number.

Accepted Answer

A) True 
 B)False

Question 9

Since all jobs eventually get done, job sequencing has no effect on resource utilization.

Accepted Answer

A) True 
 B)False

Question 10

For a single processor, a first-come, first-served FCFS) rule minimizes the average flow time because customer waiting time will be minimized.

Accepted Answer

A) True 
 B)False

Question 11

Sequencing is not as much of a concern when several activities use a common resource.

Accepted Answer

A) True 
 B)False

Question 12

A movie theater requires the following minimum number of employees, each of which is required to have two consecutive days off.
 $$\begin{array} { | c | c | c | c | c | c | c | c | } 
\hline \text { Day: } & \text { M } & \text { Tu } & \text { W } & \text { Th } & \text { F } & \text { Sa } & \text { Su } \
\hline \text { Mirimum } & & & & & & & \
\text { Persunel Required: } & 1 & 1 & 3 & 2 & 5 & 4 & 3 \
\hline
\end{array}$$ 
How many employees are needed so that each as two consecutive days off? Construct a work schedule for these employees.

Accepted Answer

Five employees are needed. Numbers under

Question 13

The EDD rule minimizes the maximum of jobs past due but doesn't perform well on average flow-time, WIP inventory or resource utilization.

Accepted Answer

A) True 
 B)False

Question 14

The time needed to process a given set of jobs is called

Accepted Answer

A) Flow time 
B) Ready time 
C) Makespan 
D) Due date 
A) Flow time 
B) Ready time 
C) Makespan 
D) Due date

Question 15

The following five jobs, along with their processing time and due dates, are given below.
 $$\begin{array} { c c c } 
& \text { Processing } & \text { Days Due } \
 \text { Jab } & \text { Time days) } & \text { Fram Today } \
\hline\text { A } & 8 & 12 \
\text { B } & 4 & 9 \
\text { C } & 3 & 6 \
\text { D } & 7 & 7 \
\text { E } & 5 & 20
\end{array}$$ 
a.Use the Shortest Processing Time Rule (SPT) and determine the average flow-time for the five jobs
b.Use the Earliest Due Date Rule (EDD) and determine the average lateness and tardiness.

Accepted Answer

a. Sequence the jobs as C-B-E-D-A. Flow

Question 16

Gantt charts can show what jobs are ahead of schedule, behind schedule, and on schedule.

Accepted Answer

A) True 
 B)False

Question 17

Short-term capacity fluctuations necessitate changes in schedules. List at least five factors affecting short-term capacity.

Accepted Answer

1. Employee absenteeism and tu

Question 18

Which of the following is an example of a situation for which a Gantt chart would be appropriate?

Accepted Answer

A)  developing a factory layout 
B)  tracking inventory levels over time 
C)  monitoring job schedules 
D)  forecasting personnel requirements in a two?shift operation 
A)  developing a factory layout 
B)  tracking inventory levels over time 
C)  monitoring job schedules 
D)  forecasting personnel requirements in a two?shift operation

Question 19

Flow time is the amount of time a job spends in a shop or factory.

Accepted Answer

A) True 
 B)False

Question 20

The table below includes processing times and due dates for five jobs.
 $$\begin{array} { c c c } 
& \text { Processing } & \text { Days Due } \
\text { Job } & \text { Time days) } & \text { Fram Today } \
\hline \text { A } & 16 & 24 \
\text { B } & 23 & 30 \
\text { C } & 22 & 40 \
\text { D } & 8 & 28 \
\text { E } & 10 & 18
\end{array}$$ 
a. Use the Shortest Processing Time Rule (SPT) to determine the average flow time.
b. Use the Earliest Due Date Rule (EDD) to determine the average lateness.

Accepted Answer

a. Sequence the jobs as D-E-A-C-B. Flow

Scheduling problems occur almost exclusively in manufacturing.

When several products share common facilities, product sequencing affects cost.

Explain why any sequence chosen in the single-machine scheduling problem will not change makespan time.

Scheduling refers to specifying

In practice, whenever processing times of a set of jobs are about equal, managers typically use a first-come, first-serve rule.

Considering a two-resource sequencing problem,

A lateness measure can only be 0 or a positive number.

Since all jobs eventually get done, job sequencing has no effect on resource utilization.

For a single processor, a first-come, first-served FCFS) rule minimizes the average flow time because customer waiting time will be minimized.

Sequencing is not as much of a concern when several activities use a common resource.

The EDD rule minimizes the maximum of jobs past due but doesn't perform well on average flow-time, WIP inventory or resource utilization.

The time needed to process a given set of jobs is called

Gantt charts can show what jobs are ahead of schedule, behind schedule, and on schedule.

Short-term capacity fluctuations necessitate changes in schedules. List at least five factors affecting short-term capacity.

Which of the following is an example of a situation for which a Gantt chart would be appropriate?

Flow time is the amount of time a job spends in a shop or factory.

Goods, Services, and Operations Management

Value Chains

Measuring Performance in Operations

Operations Strategy

Technology and Operations Management

Goods and Service Design

Process Selection, Design, and Analysis

Facility and Work Design

Supply Chain Design

Capacity Management

Forecasting and Demand Planning

Managing Inventories

Resource Management

Quality Management

Quality Control and Spc

Lean Operating Systems

Project Management

Work Measurement, Learning Curves, and Standards

Queuing Analysis

Modeling Using Linear Programming

Simulation

Work Measurement, Learning Curves, and Standards

Filters

Exam 14: Operations Scheduling and Sequencing

Scheduling problems occur almost exclusively in manufacturing.

When several products share common facilities, product sequencing affects cost.

Explain why any sequence chosen in the single-machine scheduling problem will not change makespan time.

Scheduling refers to specifying

In practice, whenever processing times of a set of jobs are about equal, managers typically use a first-come, first-serve rule.

Considering a two-resource sequencing problem,

A lateness measure can only be 0 or a positive number.

Since all jobs eventually get done, job sequencing has no effect on resource utilization.

For a single processor, a first-come, first-served FCFS) rule minimizes the average flow time because customer waiting time will be minimized.

Sequencing is not as much of a concern when several activities use a common resource.

The EDD rule minimizes the maximum of jobs past due but doesn't perform well on average flow-time, WIP inventory or resource utilization.

The time needed to process a given set of jobs is called

Gantt charts can show what jobs are ahead of schedule, behind schedule, and on schedule.

Short-term capacity fluctuations necessitate changes in schedules. List at least five factors affecting short-term capacity.

Which of the following is an example of a situation for which a Gantt chart would be appropriate?

Flow time is the amount of time a job spends in a shop or factory.

Goods, Services, and Operations Management

Value Chains

Measuring Performance in Operations

Operations Strategy

Technology and Operations Management

Goods and Service Design

Process Selection, Design, and Analysis

Facility and Work Design

Supply Chain Design

Capacity Management

Forecasting and Demand Planning

Managing Inventories

Resource Management

Quality Management

Quality Control and Spc

Lean Operating Systems

Project Management

Work Measurement, Learning Curves, and Standards

Queuing Analysis

Modeling Using Linear Programming

Simulation

Work Measurement, Learning Curves, and Standards

Filters