Question 1

Identify the major disadvantages of the Gantt load chart.

Accepted Answer

It does not account for production varia

Question 2

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the shortest processing time rule,what is the average completion time?

Accepted Answer

A) 47.6 days 
B) 60.2 days 
C) 94.0 days 
D) 2.5 days 
E) 238.0 days 
A) 47.6 days 
B) 60.2 days 
C) 94.0 days 
D) 2.5 days 
E) 238.0 days

Question 3

A practitioner of family medicine begins her day with five patients needing urgent care.She does a very brief assessment of what each patient appears to need and estimates the time required of each.None of the cases is life-threatening,and so she determines to take the five in the order that they arrived at the clinic.The processing-time data for these patients,in the order they arrived,are: Patient A,30 minutes;Patient B,40 minutes;Patient C,10 minutes;Patient D,50 minutes;and Patient E,15 minutes.(a)If it is now 8:00 a.m. ,at what time will the doctor be finished with all five of these emergencies?(b)How much time will the five patients have collectively spent waiting?(c)How much less time would have been spent waiting if the doctor had taken the patients according to shortest processing time?

Accepted Answer

(a)Using first come,first served,all fiv

Question 4

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 5

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 6

What is the primary disadvantage of the shortest processing time dispatch rule? Is this a problem if there can be no new jobs arriving after the sequence is set?

Accepted Answer

As new jobs arrive,new short-d

Question 7

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 8

Dispatching rules are typically judged by four effectiveness criteria: average completion time,utilization,average number of jobs in the system,and average job lateness.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is NOT tracked by scheduling optimization systems used in retail stores?

Accepted Answer

A) cars parked in the parking lot 
B) individual store sales 
C) transactions 
D) units sold 
E) customer traffic 
A) cars parked in the parking lot 
B) individual store sales 
C) transactions 
D) units sold 
E) customer traffic

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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

Question 12

If an assignment problem consists of 6 workers and 7 projects:

Accepted Answer

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. 
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.

Question 13

Flow time represents the time:

Accepted Answer

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 
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

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

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 in the sequence?

Accepted Answer

A) R 
B) S 
C) T 
D) U 
E) V 
A) R 
B) S 
C) T 
D) U 
E) V

Question 16

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.

Exam 15: Scheduling for the Short-Term

Identify the major disadvantages of the Gantt load chart.

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the shortest processing time rule,what is the average completion time?

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).

What is the primary disadvantage of the shortest processing time dispatch rule? Is this a problem if there can be no new jobs arriving after the sequence is set?

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

Dispatching rules are typically judged by four effectiveness criteria: average completion time,utilization,average number of jobs in the system,and average job lateness.

Which of the following is NOT tracked by scheduling optimization systems used in retail stores?

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

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?

If an assignment problem consists of 6 workers and 7 projects:

Flow time represents the time:

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

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 in the sequence?

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:

Operations and Productivity

The Global Environment and Operations Strategy

Managing Projects

Forecasting Demand

Product Design

Quality Management and International Standards

Process Design

Location Decisions

Layout Decisions

Job Design and Work Measurement

Supply Chain Management

Managing Inventory

Aggregate Scheduling

Material Requirements Planning Mrpand Erp

Jit,lean Operations,and the Toyota Production System

Maintenance and Reliability Decisions

Sustainability

Statistical Process Control

Capacity Planning

Supply Chain Modeling

Decision Modeling

Linear Programming Models

Transportation Modeling

Queuing Models

Learning Curves

Modeling with Simulation

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