Question 1

The benefits of effective scheduling include lower cost,faster throughput,and dependable delivery.

Accepted Answer

A) True 
 B)False

Question 2

The critical ratio sequencing rule prioritizes the jobs based on the importance or value of the customers who have placed the orders.

Accepted Answer

A) True 
 B)False

Question 3

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? All dates are specified as days from today.

Accepted Answer

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) B,D,A,C,E 
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) B,D,A,C,E

Question 4

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?

Accepted Answer

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) B,D,A,C,E 
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) B,D,A,C,E

Question 5

Process-focused facilities and repetitive facilities generate forward-looking schedules,but process-focused facilities do this with JIT and kanban while repetitive facilities generally use MRP.

Accepted Answer

A) True 
 B)False

Question 6

In manufacturing scheduling,physical inventories of goods can buffer variations in demand,but service scheduling normally lacks that buffer because services are generally consumed at the same time they are delivered.

Accepted Answer

A) True 
 B)False

Question 7

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 8

The president of a consulting firm wants to minimize the total number of hours it will take to complete four projects for a new client.Accordingly,she has estimated the time it should take for each of her top consultants-Charlie,Gerald,Johnny,and Rick-to complete any of the four projects,as follows:
   (a)What is the total number of hours required by the following arbitrary assignment?
Charlie→B;Gerald→A;Johnny→D;Rick→C
(b)What is the optimal assignment of consultants to projects? (Use the assignment method. )
(c)For the optimal schedule,what is the total number of hours it will take these consultants to complete these projects?

Accepted Answer

(a)16 + 13 + 15 + 12

Question 9

Sequencing (or dispatching):

Accepted Answer

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. 
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.

Question 10

Complete the table;find average lateness,average completion time,and average number of jobs in the system.Assume all durations are in days and that the jobs are processed at the shop in the order that they arrive (A then B then C then D).

Accepted Answer

@#IMG-DLM& Avg lateness = 11/4 = 2.75 da

Question 11

A work center is interested in limiting work-in-process by not allowing production to start again until the current batch is finished.The best solution most likely involves:

Accepted Answer

A) MRP. 
B) ConWIP cards. 
C) Gantt charts. 
D) Johnson's rule. 
E) the assignment method. 
A) MRP. 
B) ConWIP cards. 
C) Gantt charts. 
D) Johnson's rule. 
E) the assignment method.

Question 12

Which of the following is TRUE regarding services scheduling?

Accepted Answer

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. 
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.

Question 13

Alaska Airlines uses mathematical short-term scheduling techniques and a high-tech nerve center to manage the rapid rescheduling necessary to cope with weather delays and similar disruptions.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following is NOT a key direct benefit from effective internal or external scheduling?

Accepted Answer

A) lower cost 
B) greater use of assets 
C) more dependable delivery 
D) higher quality 
E) added flexibility 
A) lower cost 
B) greater use of assets 
C) more dependable delivery 
D) higher quality 
E) added flexibility

Question 15

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

Accepted Answer

A) FCFS maximizes utilization. 
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. 
A) FCFS maximizes utilization. 
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.

Question 16

________ are planning charts used to schedule resources and allocate time.

Accepted Answer

The answer of ________ are planning charts used to schedule...

Question 17

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?

Accepted Answer

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,B,D 
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,B,D

Question 18

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?

Accepted Answer

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) R-V-T-S-U 
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) R-V-T-S-U

Question 19

The emergency room at a hospital estimates the following requirements for registered nurses (RNs)for the late night shift each week.Nurses work four consecutive days,then have off three days.
   Perform cyclical scheduling on the data.(Note that you must identify three-day patterns of minimum requirements).How many RNs are required? How much extra capacity is required?

Accepted Answer

@#IMG-DLM& Days off are shaded.Seven full-time RNs

Question 20

What is input-output control?

Accepted Answer

Input-output control is a tech

Exam 15: Short-Term Scheduling

The benefits of effective scheduling include lower cost,faster throughput,and dependable delivery.

The critical ratio sequencing rule prioritizes the jobs based on the importance or value of the customers who have placed the orders.

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? All dates are specified as days from today.

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?

Process-focused facilities and repetitive facilities generate forward-looking schedules,but process-focused facilities do this with JIT and kanban while repetitive facilities generally use MRP.

In manufacturing scheduling,physical inventories of goods can buffer variations in demand,but service scheduling normally lacks that buffer because services are generally consumed at the same time they are delivered.

Sequencing (or dispatching):

Complete the table;find average lateness,average completion time,and average number of jobs in the system.Assume all durations are in days and that the jobs are processed at the shop in the order that they arrive (A then B then C then D).

A work center is interested in limiting work-in-process by not allowing production to start again until the current batch is finished.The best solution most likely involves:

Which of the following is TRUE regarding services scheduling?

Alaska Airlines uses mathematical short-term scheduling techniques and a high-tech nerve center to manage the rapid rescheduling necessary to cope with weather delays and similar disruptions.

Which of the following is NOT a key direct benefit from effective internal or external scheduling?

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

________ are planning charts used to schedule resources and allocate time.

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?

What is input-output control?

Operations and Productivity

Operations Strategy in a Global Environment

Project Management

Forecasting

Design of Goods and Services

Managing Quality

Process Strategy

Location Strategies

Layout Strategies

Human Resources,job Design,and Work Measurement

Supply Chain Management

Inventory Management

Aggregate Planning and Sop

Material Requirements Planning Mrpand ERP

Lean Operations

Maintenance and Reliability

Sustainability in the Supply Chain

Statistical Process Control

Capacity and Constraint Management

Supply Chain Management Analytics

Decision-Making Tools

Linear Programming

Transportation Models

Waiting-Line Models

Learning Curves

Simulation

Filters