Deck 13: Scheduling Operations

Question 1

Scheduling systems answer which all the following questions EXCEPT:

A)What delivery date do I promise?
B)How much will the schedule cost?
C)When should I start each particular activity or task?
D)How do I make sure that the job is completed on time?

Answer 1

How much will the schedule cost?

Question 2

For services,the most common priority dispatch rule is:

A)Critical ratio
B)Preemptive rule
C)First come,first served
D)Shortest processing time

Answer 2

First come,first served

Question 3

Which of the following statements is NOT true about finite capacity scheduling (FCS)?

A)FCS is an extension of Gantt chart methods.
B)FCS requires that jobs are loaded backward from due dates to determine the capacity required at each work center.
C)FCS assumes that jobs are scheduled through a number of work centers,each with one or more machines.
D)In FCS,attention is paid to scarce resources to facilitate job flow and to improve the performance of the shop.

Answer 3

FCS requires that jobs are loaded backward from due dates to determine the capacity required at each work center.

Question 4

The theory of constraints (TOC)is:

A)A strategic technique primarily used to reduce waste
B)A strategic technique used to help firms effectively improve the rate at which raw materials are converted to finished goods and then money through sales
C)A strategic technique used to balance capacity across all resources
D)All of the above

Question 5

In the language of theory of constraints,inventory is:

A)The rate at which the system generates money through sales
B)Equal to the number of orders shipped
C)The raw material value of any goods being held in inventory
D)The sales of the plant minus the cost of raw materials used to produce those sales

Question 6

Theory of constraints,as it applies to business systems,is based on which of the following premises?

A)A business has the obligation to consider its responsibility to society.
B)The goal of a business is to make money now and in the future.
C)The goal of a business is to make inventory.
D)The goal of a business is to eliminate all constraints.

Question 7

Aggregate planning and scheduling differ in that:

A)The former ensures capacity is efficiently used whereas the latter is the acquisition of resources.
B)The former is short term in nature while the latter is medium term.
C)The former is last in the hierarchy of capacity planning decisions and the latter is first.
D)The former deals with acquiring resources and the latter deals with allocating resources.

Question 8

The overriding problem in batch scheduling is:

A)Regulating input
B)Controlling output
C)Managing queues
D)Assigning labor

Question 9

Critical Ratio is:

A)The ratio of processing time to idle time of the process
B)The ratio of remaining time until due date to the remaining processing time
C)Greater than one if the job is behind schedule
D)All of the above

Question 10

A bottleneck is:

A)A resource that has the maximum capacity in the facility
B)A resource whose capacity is less than the capacity of all other resources and whose capacity is less than the demand placed on it
C)A resource that blocks labor productivity
D)A resource that has the fastest processing time

Question 11

Shortest processing time (SPT)rule means:

A)The job with the least processing time is worked on next
B)The job needed at the bottleneck is worked on next
C)The same as Critical ratio
D)None of the above

Question 12

Which of the following is NOT determined by Gantt charting?

A)The waiting time of each job
B)Makespan of all jobs
C)Resource utilization
D)Finite capacity scheduling

Question 13

The reason(s)for batch scheduling being a complex management problem is/are:

A)Irregular flow of units with many starts and stops
B)Layout of the batch process by machine group or skills into work centers
C)Batches result in inventory or people waiting in queues
D)All of the above

Question 14

According to Goldratt:

A)An hour lost at the bottleneck is an hour lost for the entire system.
B)A product coming out of a non-bottleneck is precious and should not be wasted.
C)Maximizing the efficiency of all resources would generate money for the company.
D)Utilization,Productivity,and Operating Expenses are the three vital metrics of a process.

Question 15

Which of the following is a performance measure for a Gantt chart?

A)Makespan
B)Machine utilization
C)Sum of the delivery times for each job
D)All of the above

Question 16

Lead time for completion of a job is a function of:

A)Capacity and demand
B)Capacity and priority decisions
C)Capacity and supply decisions
D)None of the above

Question 17

Use a Gantt chart to schedule the jobs in order 1,2,3 and assume that jobs cannot be split.What is the makespan?

A)12
B)9
C)14
D)3

Question 18

Scheduling deals with which three conflicting objectives?

A)High efficiency,high profits,and short lead-time
B)High profits,low inventories,and good customer service
C)Low inventories,high efficiency,and good customer service
D)Low inventories,good customer service,and short lead-time

Question 19

Finite capacity scheduling assumes which of the following?

A)Jobs cannot be split into two or more parts.
B)Jobs cannot pass each other.
C)More than one job can be scheduled on a machine at a time.
D)Capacity is limited in each work center.

Question 20

Which of the following statements is NOT true about the theory of constraints (TOC)?

A)It was developed by Goldratt in his book,"The Goal."
B)Operations should help to increase sales,as long as capacity is available.
C)Identifying the bottleneck in a process is critical for improving the overall flow through the process.
D)Increased utilization of a non-bottleneck would improve the operating performance in a factory.

Question 21

The Shortest process time (SPT)rule is better at meeting due dates when compared to the Critical Ratio rule.

Question 22

First come,first served is widely used in both service and manufacturing firms.

Question 23

Finite Capacity Scheduling can be used to identify the bottleneck in a given process.

Question 24

What are the steps that could be taken at a bottleneck resource to increase its capacity?

Question 25

Throughput is defined as the difference between the sales and the operating expenses of a plant.

Question 26

Optimal sequencing rules have found widespread use in practice.