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OPS 571 Final Exam Guide (New, 2019)
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OPS 571 Final Exam Guide (New, 2019)

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1.

Which of the following is a measure of operations and supply management efficiency used by Wall Street?

Dividend payout ratio

Receivable turnover

Current ratio

Financial leverage

Earnings per share growth

 

 

2.

An activity-system map is which of the following?

A diagram that shows how a company's strategy is delivered to customers

A timeline displaying major planned events

A network guide to route airlines

A facility layout schematic noting what is done where

A listing of activities that make up a project

 

 

3.

Which of the following is a total measure of productivity?

Output/Materials

Output/Labor

Output/(Labor + Capital + Energy)

All of these

Output/Inputs

 

 

4.

Which of the following approaches to service design is characterized by having the customer take a greater role in the production of the service?

Quality approach

Self-service approach

Production-line approach

Do-it-yourself approach

Personal-attention approach

 

 

5.

Which of the following basic types of production layout formats is one that has similar equipment or functions are grouped together?

Workcenter layout

Production line layout

Group technology layout

Manufacturing cell layout

Assembly line layout

 

6.

 

Which of the following is a characteristic that can be used to guide the design of service systems?

Services are all similar.

Services cannot be inventoried.

Services businesses are inherently entrepreneurial.

Even service businesses have internal services.

Quality work means quality service.

 

 

7.

An advantage of a make-to-stock process is which of the following?

All units of output are unique.

It features rapid delivery of a standard product.

It combines the best features of other processes.

It responds directly to customer orders.

It allows the firm to avoid inventory costs.

 

8.

Getting an autograph from a famous person might involve standing in which type of queuing line structure?

Single channel, single phase

None of these

Single channel, multiphase

Multichannel, multiphase

Multichannel, single phase

 

9.

For an infinite queuing situation, if the arrival rate for loading trucks is 5 trucks per hour, what is the mean time between arrivals?

2.5 hours

5 hours

0.2 hour

0.1 hour

None of these

 

10.

An assumption of learning curve theory is which of the following?

Organizational learning is not included in learning theory.

The time required to do a task will vary randomly each time the task is repeated.

Unit time will decrease at an increasing rate.

Learning will not be transferred from one worker to the next.

The reduction in unit time will follow a predictable pattern.

 

 

11.

A company's production process has an 80 percent learning curve rate. The process has produced 1,000 units to date. A process refinement is estimated to allow a future learning curve rate for the identical product of 75 percent. However, the initial unit made using the new process will take the same amount of time as the initial unit produced using the old process. At what point, using the new process, will the production rate exceed the production rate achieved by the old process?

Before the 100th unit

Before the 120th unit

Before the 80th unit

Before the 50th unit

Before the 250th unit

 

 

12.

For which of the following should we use a p-chart to monitor process quality?

Grades in a freshman "pass/fail" course

Temperatures in a classroom

The dimensions of brick entering a kiln

The weight of fluid in a container

Lengths of boards cut in a mill

 

13.

You have been called in as a consultant to set up a Kanban control system. The first thing to do is to determine the number of Kanban card sets needed. Your research shows that the expected demand during lead time for a particular component is 150 per hour. You estimate the safety stock should be set at 25 percent of the demand during lead time. The tote trays used as containers can hold 8 units of stock, and the lead time it takes to replenish an order is 2 hours. Which of the following is the number of Kanban card sets necessary to support this situation?

42

68

89

47

94

 

14.

Which of the following is a fixed-time-period inventory model?

Just-in-time model

The EOQ model

Periodic system model

The Q model

The least cost method

 

15.

A company is planning for its financing needs and uses the basic fixed-order-quantity inventory model. Which of the following is the total cost (TC) of the inventory given an annual demand of 10,000, setup cost of $32, a holding cost per unit per year of $4, an EOQ of 400 units, and a cost per unit of inventory of $150?

None of these

$1,501,600

$1,498,200

$499,313

$500,687

 

  1. $1,501,600

    Q = 400. Average Inventory = Q/2 = 200. Holding cost/year = $4. Thus, annual holding cost = $800. Annual set-up cost = 10,000/400 = 25 x $32 = 800. Demand x cost per unit = 10,000 x $150 = 1,500,000. Hence, TC = $1,500,000 + 800 + 800 = $1,501,600.

 

16.

Which of the following is a principle of work center scheduling?

Reschedule every day.

Once started, a job can and should be finished even if unavoidably interrupted.

Assign the first worker to all of the days that require staffing.

Achieve certainty in standards and routings.

Give work centers less to do then their maximum.

 

 

17.

Which of the following is a "focusing step" of Dr. Eli Goldratt's theory of constraints?

Identify system constraints.

Support system constraints.

If you have no system constraints, make some.

Reduce system constraints.

Reinforce system constraints.

 

18.

In designing a lean production facility layout, a designer should do which of the following?

Locate flexible workstations offline.

Balance capacity using job shop analysis.

Design for work flow balance.

Always keep operations on a single floor of the factory.

Link operations through a push system.

 

19.

A simple project listing of five activities and their respective time estimates are presented here:

  

Using CPM, which activities make up the critical path?

None of these

A, B, D, E

A, D, E

A, C, B, D, E

A, C, D, E

 

 

20.

A company must perform a maintenance project consisting of seven activities. The activities, their predecessors, and their respective time estimates are presented here:

  

Using CPM, which activities make up the critical path?

A, C, B, F, E

None of these

A, B, D, F, G

A, C, E, F, G

A, D, E

 

21.

Which of the following is not a problem definition tool from the operations consulting tool kit?

Issue trees

Five forces model

Computer simulation

Customer surveys

Gap analysis

 

22.

Which of the following is not one of the basic types of forecasting?

Simulation

Causal relationships

Qualitative

Time series analysis

Force field analysis

 

23.

A company has actual unit demand for three consecutive years of 124, 126, and 135. The respective forecasts for the same three years are 120, 120, and 130. Which of the following is the resulting MAD value that can be computed from these data?

3

1

15

123

5

 

C MAD = ABS[(124 - 120) + (126 - 120) + (135 - 130)]/3 = 15/3 = 5.

 

24.

From an operational perspective, yield management is most effective under which of the following circumstances?

Inventory is perishable.

The firm doing yield management is very profitable.

Demand cannot be segmented by customer.

Fixed costs are low, and variable costs are high.

The customer is a "captive" of the system.

 

25.

What is transaction processing?

The decision support system used to efficiently handle multiple transactions

The movement of paperwork through a system using a decision tree

The scheduling of machinery to minimize time and scrap

The posting and tracking of the detailed activities of a business

 

26.

If the actual output of a piece of equipment during an hour is 500 units and its best operating level is at a rate of 400 units per hour, which of the following is the capacity utilization rate?

0.75

1.00

1.25

1.33

100

 

27.

Which of the following is an input to the master production schedule (MPS)?

Planned order schedules

The bill of materials

The aggregate plan

The exception report

Inventory records file

 

28.

Which of the following is considered a primary report in an MRP system?

Cycle counting reports

Performance reports

Planned order schedules

Planning reports

Exception reports

 

29.

The centroid method for plant location uses which of the following data?

Probabilities and payoffs

Correlation matrix of existing facilities

Volume of goods to be shipped between existing points

Inbound transportation costs

Transport times between facilities

 

 

 

30.

In Hau Lee's uncertainty framework to classify supply chains, a supply chain for functional products with an evolving supply process is called which of the following?

Responsive

Forward looking

Efficient

Risk hedging

Agile

 

1. Identify a disadvantage of implementing group technology in a firm.

The number of employees required for a process increases exponentially.

The workers must be flexible enough to run several machines and processes.

It increases inventory.

The waiting time between operations is increased.

2. A shopkeeper purchases raw materials to manufacture souvenirs for a local event that happens once every five years. In this case. identify the model that the shopkeeper is most likely to use to maintain stock.

Lot sizing model

Fixed—time period model

Fixed—order quantity model p.

Single-period model

3 Define synchronous manufacturing as stated by Goldratt's theory.

It is a production process organized to achieve the goals of the firm.

It is an integrated set of activities designed to achieve high quality and high levels of production with minimal inventories of raw materials.

It is a production process in which machines are the critical resource used for scheduling.

It is the optimization of the rate at which cash is generated by production through sales.

4. involves testing random samples of the end product from a process to determine if the process is churning out items within the predetermined range.

Organizational leaming

Statistical process control

Cyclical strategic scheduling

Event simulation

5. Utilization is the ratio between the actual amount of time a resource is activated for and the total amount of time the resource is available for use.

Utilization

Lead time

Service rate

Pacing

6. The manager of a shop floor schedules production based on the equipment that are used in the process as a key resource. In this case. the manager is most likely using a

backward scheduling

forward scheduling

machine-limited process

labor-limited process

7 Define lead time.

It is the time required to achieve high customer service with minimum levels of inventory investment.

It is the time required to produce a variety of products typically at lower volume levels.

It is the time required to attend to a customer order.

It is the time required to position inventory in the supply chain.

8. refers to the integrated activities designed to achieve high quality and high levels of production with minimal inventories of raw materials and to eliminate wastes.

The Shingo system

Kanban system

Lean production

Process mapping

9. Define preventive maintenance.

It is the grouping of similar parts and processes into a specialized workcell.

It is the improvement that stems from both a person's experience and the changes in equipment. product design. and administration.

It is the periodic inspection and repair of equipment to avoid breakdowns.

It is the emphasis of getting a product or a process right the first time.

10. shows the relationship between the total number of units produced and the unit production tim

A Poisson distribution

A learning curve

Cycle time

Service rate

11 Identify a true statement about services.

A service is a tangible process.

A service is inherently heterogeneous

A service has physical dimensions.

A service has very limited or no customer interaction.

12. In a  the product remains in a specific location and the equipment labor and material required for the product are gathered to the specific location 

project layout

functional layout

manufacturing cell

workcenter

13. Rachel performs an analysis in which she analyzes the performance of the clients of her organization relative to the expectations of the client's customers. In this scenario. Rachel is most likely using a

Pareto analysis

gap analysis

Gantt chart

bar chart

14. is the design operation and improvement of the processes that create and deliver a company's essential products and services.

Inventory control

Operations and supply chain management

Product routing

Aggregate sales and operations planning

15. determines the amount of inventory, which includes parts. components. and materials. necessary to produce a product

Break-even analysis

Dynamic programming

Material requirements planning

GAP analysis

16. Define customer order decoupling point.

It involves the analysis of current business data to better solve business problems using mathematical calculations.

It is the time required to attend a customer order.

It is the positioning of inventory in a supply chain.

It illustrates the method by which a company's strategy is delivered through a set of supporting activities.

17. Define waste reduction.

It is the process of combining the concept of cross-docking and consolidation.

It is the elimination of non—value-adding activities and the optimization of value-adding activities that are part of a process.

It is the optimization of the rate at which cash is generated by production through sales.

It is the integration of activities to increase the customer value of a process.

18. Identify the true statements about the learning curve theory.

It assumes that the unit time for a task will decrease at a decreasing rate.

A drawback of the learning curve theory is that the performance can be measured only in terms of time per unit.

In a learning curve. the time for task completion will increase each time the task is undertaken.

In a learning curve the reduction in time will be unpredictable.

19. is the characteristics of a product in terms of quality that are sorted as either conforming or nonconforming to specification.

The capability index

A throughput rate

A learning curve

An attribute

20. Identify a true statement about an operations consulting process.

Its results are immediately measurable.

It leads to changes in attitudes and culture of an organization.

Unlike general management consulting. operations consulting does not require extensive interviewing of employees.

It takes a longer time than general management consulting to yield results that can be measured.

21. Identify a true statement about water transportation mode.

It is a highly specialized mode of transport limited to the delivery of gases-

Moving high volumes of products is costly.

It can handle a high capacity of materials.

Fast transit times can be achieved in this mode of transportation.

22 A pharmaceutical company keeps detailed documentation of its inventory. The company replenishes its inventory whenever the inventory level falls below a certain limit and there is a threat of a stockout. This company is most likely using a model.

fixed-order quantity

fixed-time period

regression

single-period

23. According to Goldratt's definition, is the rate at which cash is generated by production through sales.

expediting

throughput

productivity

cash flow

24. Identify an advantage of pure projects.

Team pride, motivation, and commitment are high.

Team members have authority over the project.

Organizational goals and policies are upheld.

Duplication of resources is eliminated

25. are used for decisions that are related to aggregate and strategy demand-

Process assessments

P-models

Periodic review systems

Strategic forecasts

26. Identify a disadvantage of pure projects.

Equipment and people are not shared across projects.

A lot of time is consumed while making decisions.

Lines of communication are lengthened.

The project manager has no authority over the project.

27. is responsible for scheduling, dispatching, monitoring, and regulating production on the shop floor.

Manufacturing execution system

P-model

ABC classification

Enterprise resource planning

28. is the average time required to finish a cycle of an operation.

Cycle time

Lead time

Queue time

Changeover time

29. A manufacturing firm efficiently assembles an airplane by bringing all the necessary raw materials, parts, and equipment to a central location. This scenario illustrates a

functional layout

workcenter

manufacturing cell

project layout

30. The main objective of the aggregate operations plan is to:

achieve better integration between suppliers and manufacturers.

minimize the cost of resources necessary to meet demand.

determine future demand with the help of past data.

keep demand and supply in balance.

 

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