Scheduling Operations

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The Operations Function
Operations and Supply Chain Strategy
Product Design
Process Selection
Service Delivery System Design
Process-Flow Analysis
Lean Thinking and Lean Systems
Managing Quality
Quality Control and Improvement
Forecasting
Capacity Planning
Scheduling Operations
Project Planning and Scheduling
Independent Demand Inventory
Materials Requirements Planning and ERP
Supply Chain Management
Sourcing
Global Logistics

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Question 1

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Multiple Choice

Aggregate planning and scheduling differ in that

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the former ensures that capacity is efficiently used, whereas the latter is the acquisition of resources.

the former is short term, whereas the latter is medium term.

the former is last in the hierarchy of capacity planning decisions, and the latter is first.

the former deals with acquiring resources, and the latter deals with allocating resources.

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Question 2

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Multiple Choice

Scheduling deals with which three conflicting objectives?

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High efficiency, high profits, and short lead time.

High profits, low inventories, and good customer service.

Low inventories, high efficiency, and good customer service.

Low inventories, good customer service, and short lead time.

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Question 3

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Multiple Choice

The overriding problem in batch scheduling is

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regulating input.

controlling output.

managing queues.

assigning labor.

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Question 4

Free

Multiple Choice

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

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Question 5

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Multiple Choice

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

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It was developed by Goldratt in his book "The Goal."

Operations should help to increase sales, as long as capacity is available.

Identifying the bottleneck in a process is critical for improving the overall flow through the process.

Increased utilization of a non-bottleneck would improve the operating performance in a factory.

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Question 6

Multiple Choice

Scheduling systems answer all the following questions EXCEPT

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What delivery date do I promise?

How much will the schedule cost?

When should I start each particular activity or task?

How do I make sure that the job is completed on time?

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Question 7

Multiple Choice

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

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irregular flow of units with many starts and stops.

layout of the batch process by machine group or skills into work centers.

batches result in inventory or people waiting in queues.

all of the above.

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Question 8

Multiple Choice

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

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Makespan.

Machine utilization.

Sum of the wait times for each job.

All of the above.

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Question 9

Multiple Choice

Which of the following is NOT determined by Gantt charting?

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The waiting time of each job.

Makespan of all jobs.

Resource utilization.

Finite capacity scheduling.

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Question 10

Multiple Choice

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

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FCS is an extension of Gantt chart methods.

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

FCS assumes that jobs are scheduled through a number of work centers, each with one or more machines.

In FCS, attention is paid to scarce resources to facilitate job flow and to improve the performance of the shop.

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Question 11

Multiple Choice

Critical ratio is

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the ratio of processing time to idle time of the process.

the ratio of remaining time until due date to the remaining processing time.

greater than 1 if the job is behind schedule.

all of the above.

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Question 12

Multiple Choice

Lead time for completion of a job is a function of

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capacity and demand.

capacity and priority decisions.

capacity and supply decisions.

none of the above.

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Question 13

Multiple Choice

The theory of constraints (TOC)is

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a strategic technique primarily used to reduce waste.

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.

a strategic technique used to balance capacity across all resources.

all of the above.

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Question 14

Multiple Choice

According to Goldratt,

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an hour lost at the bottleneck is an hour lost for the entire system.

a product coming out of a non-bottleneck is precious and should not be wasted.

maximizing the efficiency of all resources would generate money for the company.

utilization, productivity, and operating expenses are the three vital metrics of a process.

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Question 15

Multiple Choice

In the language of theory of constraints,inventory is

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the rate at which the system generates money through sales.

equal to the number of orders shipped.

the raw material value of any goods being held in inventory.

the sales of the plant minus the cost of raw materials used to produce those sales.

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Question 16

Multiple Choice

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

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A business has the obligation to consider its responsibility to society.

The goal of a business is to make money now and in the future.

The goal of a business is to make inventory.

The goal of a business is to eliminate all constraints.

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Question 17

Multiple Choice

Which of the following statements concerning scheduling is INCORRECT?

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Scheduling decisions allocate available capacity to jobs, activities, tasks, or customers.

Scheduling is typically performed prior to aggregate planning.

Scheduling results in a time-phased plan, representing what is to be done, when it should be done, who will do the work, and the equipment required for the work.

Scheduling seeks to resolve several conflicting objectives, including high efficiency, low inventories, and good customer service.

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Question 18

Multiple Choice

Given no constraints,how many possible sequences are there if five jobs are in the queue for an operation?

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120

720

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Question 19

Multiple Choice

Which of the following statements about batch scheduling is INCORRECT?

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Dispatching is used to determine the job priority at a work center.

The priority of a job, once determined, does not change as it progresses through the production process.

Finite scheduling in batch systems recognizes the limited processing capacity of the facility and does not allocate more capacity than is available.

The theory of constraints argues that scheduling can be improved by increasing capacity at bottleneck operations.

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Question 20

Multiple Choice

The three most important metrics according to the theory of constraints are

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throughput, utilization, and inventory.

inventory, efficiency, and utilization.

efficiency, utilization, and operating expenses.

throughput, inventory, and operating expenses.

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