Operations management stevenson 11th edition test bank ch14s

AACSB: Reflective Thinking Blooms: Understand Difficulty: Easy Learning Objective: 14s-01 Explain the importance of maintenance in production systems.. AACSB: Reflective Thinking Blooms:

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9 Pareto analysis (using the 80/20 rule) is one method of determining when preventive maintenance activities should be performed

12 It is best to replace a failing piece of equipment with one that will have identical capabilities as the

equipment being replaced since we are already familiar with that machine

15 Maintenance activities are often organized into the two groups:

A breakdown maintenance and preventive maintenance

B breakdown maintenance and predictive maintenance

C preventive maintenance and predictive maintenance

D equipment maintenance and breakdown maintenance

E equipment maintenance and buildings maintenance

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16 Breakdown maintenance is _; preventative maintenance is _

17 The goal of maintenance is to maintain the productive system in good working order while minimizing:

A total preventive maintenance costs

B total breakdown maintenance costs

C total maintenance costs

D the difference between preventive and breakdown costs

E the ratio of breakdown to preventive maintenance costs

18 _ is most closely associated with breakdown maintenance

A equipment adjustments

B equipment cleaning

C equipment inspection

D repair of broken parts

E replacement of worn parts

19 Factors affecting the decision of how much preventive maintenance is desirable typically include all of the following except:

A age of equipment

B type of product

C degree of technology

D type of production process

E how critical to the production process

20 Cost of equipment breakdown doesn't include:

A loss of output

B cost of idle workers

C damage to other equipment

D replacement costs

E potential safety hazard

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21 The optimum amount of preventive maintenance is where:

A Total breakdown costs are a minimum

B Total preventive maintenance costs are a minimum

C Each maintenance component cost is a minimum

D Total maintenance costs are a maximum

E Total maintenance costs are a minimum

22 The type of maintenance which is periodic in nature is:

A breakdown maintenance

B predictive maintenance

C preventive maintenance

D corrective maintenance

E all of the above

23 Preventive maintenance is generally scheduled on the basis of:

A planned inspections

B passage of time

C number of operating hours

D all of the above

E none of the above

24 Ideally, preventive maintenance will be performed:

A after a planned inspection

B after the passage of a specified period of time

C after a predetermined number of operating hours

D just prior to the start of the workday

E just prior to a breakdown or failure

25 Attempting to determine when preventive maintenance activities should be performed is called:

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26 "Total productive maintenance" is best described as:

A avoiding all breakdown maintenance

B doing a great deal of preventative maintenance to try to avoid breakdown maintenance

C a JIT approach taking advantage of cross-training

D extending preventative maintenance back to design

E none of the above

27 In the broadest sense, equipment and facilities preventive maintenance extends back to the:

A design and selection stage

B inventories of spare parts

C operator repair of minor problems

D readily available repair personnel

E All of these are major approaches

29 In the area of maintenance, the Pareto phenomenon is reflected in the fact that:

A All equipment justifies about the same expense

B A majority of equipment will justify considerable expense

C A few pieces of equipment will justify little expense

D A few pieces of equipment will justify considerable expense

E No piece of equipment will justify major expense; it's better to replace

30 Reactive maintenance is _ maintenance

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31 The total maintenance curve (preventive maintenance cost plus breakdown and repair cost):

A slopes up as the number of preventive maintenances increase

B slopes down as the number of preventive maintenances increase

C starts low, increases rapidly and then drops back down as the number of preventive maintenances increase

D starts high, drops gradually but then goes back up as the number of preventive maintenances increase

E remains relatively flat as the number of preventive maintenances increase

32 The frequency of breakdown of a piece of equipment per month is shown in the table The cost of a breakdown is $1,000 and the cost of preventive maintenance is $2,000 per month Assume that the equipment breakdown can be avoided if preventive maintenance is performed Should the manager use preventive

maintenance, or would it be better to fix the equipment when it breaks down?

33 The average time before breakdown of a machine is normally distributed and has a mean of 7 weeks and a standard deviation of 1.5 weeks If breakdown cost averages $2,500 and preventive maintenance costs $500, what is the optimal preventive maintenance interval?

34 The average time before breakdown of a machine is normally distributed and has a mean of 9 weeks and a standard deviation of 1.5 weeks If breakdown cost averages $1,500 and preventive maintenance costs $500, what is the optimal preventive maintenance interval?

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35 The average time before breakdown of a machine is normally distributed and has a mean of 18 weeks and a standard deviation of 3 weeks If breakdown cost averages $2,000 and preventive maintenance costs $1,400, what is the optimal preventive maintenance interval?

36 Which of the following is the primary consideration with regard to preventative maintenance?

A What technology to use

B How varied the maintenance will be

C How often the maintenance will occur

D Which products it will be provided to

E Who will do it

37 Which of the following would not improve the performance of a breakdown program?

A more trained personnel

B short lead times for replacement parts

C standby equipment

D cross-training repair personnel

E reducing inventories of spare parts

38 Breakdown programs often are prioritized such that some equipment gets a lot of attention and others get very little This typically reflects the fact that breakdowns are consistent with

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ch14s Key

1 The goal of maintenance is to minimize cost

FALSE

The goal of maintenance is to keep the production system in good working order at minimal cost

AACSB: Reflective Thinking

Blooms: Understand

Difficulty: Easy

Learning Objective: 14s-01 Explain the importance of maintenance in production systems.

Stevenson - Chapter 14S #1

Topic Area: Introduction

2 The goal of maintenance is to maintain the productive system in good working order while minimizing or eliminating the cost of preventive maintenance

FALSE

The goal of maintenance is to keep the production system in good working order at minimal cost

Difficulty: Medium

3 Breakdown maintenance includes activities such as equipment inspection and adjustment

FALSE

Breakdown maintenance occurs after a problem has occurred

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4 Degree of technology is a factor affecting the decision of how much preventive maintenance is desirable

5 Breakdown maintenance is best performed on a regularly scheduled basis

FALSE

Breakdown maintenance occurs only after a breakdown

Learning Objective: 14s-04 Explain breakdown maintenance and name the key issues associated with it.

6 One basis for scheduling preventive maintenance is passage of time

TRUE

Preventative maintenance can be scheduled simply by the passage of time

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7 Ideally, preventive maintenance will be performed before a breakdown or failure

TRUE

This will result in the longest possible use of facilities or equipment without a breakdown

Learning Objective: 14s-02 Describe the range of maintenance activities.

Topic Area: Preventative Maintenance

8 In the broadest sense, preventive maintenance extends back to the installation stage of equipment and facilities

9 Pareto analysis (using the 80/20 rule) is one method of determining when preventive maintenance activities should be performed

FALSE

Pareto analysis is a method for prioritizing breakdown programs

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10 In the area of maintenance, the Pareto phenomenon is reflected in the fact that, regardless of problem classification, all equipment will justify about the same expense

Topic Area: Breakdown Programs

11 Proactive maintenance is periodic

TRUE

Periodic maintenance occurs before problems do

12 It is best to replace a failing piece of equipment with one that will have identical capabilities as the equipment being replaced since we are already familiar with that machine

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13 Cutting preventive maintenance in half will probably double the number of breakdowns

FALSE

Breakdowns may become more likely, but they wouldn't necessarily double

Difficulty: Easy

Learning Objective: 14s-03 Discuss preventive maintenance and the key issues associated with it.

14 If one operator performing preventive maintenance requires two hours to complete the job, then two operators working together should complete the preventive maintenance in one hour

15 Maintenance activities are often organized into the two groups:

A breakdown maintenance and preventive maintenance

B breakdown maintenance and predictive maintenance

C preventive maintenance and predictive maintenance

D equipment maintenance and breakdown maintenance

E equipment maintenance and buildings maintenance

These are the two groups into which maintenance is often organized

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16 Breakdown maintenance is _; preventative maintenance is _

Proactive maintenance is preventative maintenance

Difficulty: Easy

17 The goal of maintenance is to maintain the productive system in good working order while minimizing:

A total preventive maintenance costs

B total breakdown maintenance costs

C total maintenance costs

D the difference between preventive and breakdown costs

E the ratio of breakdown to preventive maintenance costs

The cost of maintenance includes the cost of maintaining equipment as well as the cost of breakdowns

18 _ is most closely associated with breakdown maintenance

A equipment adjustments

B equipment cleaning

C equipment inspection

D repair of broken parts

E replacement of worn parts

Repairing broken parts is primarily part of breakdown maintenance

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19 Factors affecting the decision of how much preventive maintenance is desirable typically include all of the following except:

A age of equipment

B type of product

C degree of technology

D type of production process

E how critical to the production process

The type of product does not typically enter into this question

20 Cost of equipment breakdown doesn't include:

A loss of output

B cost of idle workers

C damage to other equipment

D replacement costs

E potential safety hazard

The breakdown cost basically involves the cost of restoring a machine to production

Difficulty: Easy

21 The optimum amount of preventive maintenance is where:

A Total breakdown costs are a minimum

B Total preventive maintenance costs are a minimum

C Each maintenance component cost is a minimum

D Total maintenance costs are a maximum

E Total maintenance costs are a minimum.

Total maintenance costs include preventative maintenance costs as well as breakdown and repair costs

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22 The type of maintenance which is periodic in nature is:

A breakdown maintenance

B predictive maintenance

C preventive maintenance

D corrective maintenance

E all of the above

Preventative maintenance is routine

Difficulty: Hard

23 Preventive maintenance is generally scheduled on the basis of:

A planned inspections

B passage of time

C number of operating hours

D all of the above

E none of the above

Preventative maintenance is routine

24 Ideally, preventive maintenance will be performed:

A after a planned inspection

B after the passage of a specified period of time

C after a predetermined number of operating hours

D just prior to the start of the workday

E just prior to a breakdown or failure

This will result in the longest possible use of facilities or equipment without a breakdown

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25 Attempting to determine when preventive maintenance activities should be performed is called:

Predictive maintenance is an attempt to determine when to perform preventive maintenance activities

26 "Total productive maintenance" is best described as:

A avoiding all breakdown maintenance

B doing a great deal of preventative maintenance to try to avoid breakdown maintenance

C a JIT approach taking advantage of cross-training

D extending preventative maintenance back to design

E none of the above

This approach is consistent with JIT systems and lean operations, where employees are given greater responsibility for quality, productivity, and the general functioning of the system

Difficulty: Hard

27 In the broadest sense, equipment and facilities preventive maintenance extends back to the:

A design and selection stage

B procurement stage

C installation stage

D pilot-testing stage

E implementation stage

Maintenance problems are sometimes designed into a system

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