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Indicate whether the statement is true or false.
1. The philosophy and principles of the TOC are valuable in understanding demand and capacity management.
a. True
b. False
2. The imputed cost of waiting is the reasonable value that might reflect the potential loss of future revenue or customer
dissatisfaction.
a. True
b. False
3. Simulation models are not well equipped to capture the dynamic behavior of queues over time.
a. True
b. False
4. Total process output is at the throughput rate of the bottleneck.
a. True
b. False
5. Little’s Law uses short-term averages to explain relationships.
a. True
b. False
6. Flow time depends not only on the actual time to perform the tasks required, but also on how many other entities are in
the work-in-process stage.
a. True
b. False
7. When calculating utilization, the dimensions of the denominator must be greater than those of the numerator.
a. True
b. False
Indicate the answer choice that best completes the statement or answers the question.
8. An airline has one employee work the counter. A customer arrives on the average of once every 3 minutes, and it takes
on average 2 minutes to process the transaction. What is the probability that the system is empty?
a. 0%
b. 33%
c. 66%
d. 100%
9. In an analytical queueing model, service times measure _____.
a. demand
b. process components
c. completion percentage
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d. rates
10. A(n) _____ is a waiting line.
a. queue
b. process system
c. field
d. plot point
11. Which of the following best defines the Theory of Constraints?
a. The concept of purposely creating barriers in a process in order to evaluate the impact on the workflow
b. Maximizing cash flow by minimizing throughput
c. A set of principles that focuses on increasing total process throughput by maximizing the utilization of all
bottleneck work activities
d. Limiting demand in order to better service remaining customers
12. _____ time is the average time it takes to complete one cycle of a process.
a. Flow
b. Mean
c. Standard
d. Elemental
13. Which of the following is an example of a bottleneck management principle?
a. Work-in-process buffer inventory should be place behind bottlenecks to maximize resource utilization.
b. At bottleneck workstations, idle time is acceptable if there is no work to do.
c. Use large order sizes at bottleneck workstations.
d. An hour lost at a bottleneck resource has no effect on total process or factory output.
14. _____ is the typical queueing system used by supermarkets.
a. Several parallel servers fed by their own queues
b. One or more parallel servers fed by a single queue
c. A combination of several queues in a series
d. One server, one queue
15. What is the average time a bouquet stays in a florist shop if they sell 100 bouquets per day and they maintain an
average inventory of 200 bouquets?
a. 1 day
b. 2 days
c. 5 days
d. 10 days
16. The process for applying for a work permit at the Manchester department of labor is as follows. First, the
administrator fills out an application (5 minutes) and takes a picture (1 minute). Then, a clerk enters the information and
processes the permit (5 minutes). There are two administrators and three clerks. If the number of licenses per hour for the
administrators is 16 and the number of licenses per hour for the clerks is 20.57, what can you conclude?
a. The administrators are the bottleneck resources.
b. There should be more clerks.
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c. The clerks are a physical constraint.
d. The total process output is the average of the number of licenses per hour of the administrators and clerks.
17. In one method of calculating utilization, _____ divided by Resources Available.
a. Resources Used
b. Service Rate
c. Number of Servers
d. Resource Capacity
18. Which of the following describes the general process for identifying a bottleneck?
a. Measure the number of units completed per unit time.
b. Calculate the speed of the process from start to finish.
c. Determine the work activity that runs most efficiently.
d. Identify the work activity that has the smallest throughput.
19. Which of the following is NOT part of a queueing system?
a. A server that provides the service
b. A map of processes and functions
c. A queue of entities that wait if the server is busy
d. Customers that arrive for service
20. Which of the following is NOT true about simulation models?
a. Simulations can be used to analyze processes that cannot be evaluated well analytically.
b. A simulation model is used to get estimates; an analytical model provides detailed analysis.
c. Simulations can use actual probability rates for both demand and service rates.
d. Analytical and simulation models are often used in combination.
21. Which of the following is NOT an example of a nonphysical constraint?
a. low product demand
b. Associated with the capacity of a resource
c. inefficient management policy
d. anything environmental or organizational
22. The process for applying for a work permit at the Manchester department of labor is as follows. First, the
administrator fills out an application (5 minutes) and takes a picture (1 minute). Then, a clerk enters the information and
processes the permit (5 minutes). There are two administrators and three clerks. If the number of licenses per hour for the
administrators is 16 and the number of licenses per hour for the clerks is 20.57, what is the hourly service rate for clerks?
a. 5
b. 6
c. 10
d. 12
23. _____ is the typical queueing system used by banks and airline ticket counters.
a. Several parallel servers fed by their own queues
b. One or more parallel servers fed by a single queue
c. A combination of several queues in a series
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d. One server, one queue
24. Analytical queueing models assume a Poisson probability distribution for _____.
a. arrivals
b. rates
c. service times
d. departures
25. The number of units or tasks that are completed per unit time from a process is the _____.
a. endput
b. throughput
c. input
d. output
26. Which of the following is another term for one simulation run?
a. Replication
b. Redundancy
c. Reference
d. Reflection
27. A warehouse is capable of processing 600 returns per day, and the average number of returns in the 200. Based on the
data in the question, what is being calculated by dividing 600 by 200?
a. Work-in process
b. Flow time
c. Process performance
d. Throughput
28. A scooter rental company in a major beachside city has 70% of its fleet of 200 scooters rented each day on average.
Scooter are rented for an average of five days. Which of the following can you use to start figuring out the average
process performance?
a. (.7)(200 scooters)/R × (5 days)
b. (.7)(200 scooters) = R × (5 days)
c. (.7)(5 days) / R × (200 scooters)
d. (.7)(5 days) = R × (200 scooters)
29. _____ = Throughput × Flow time.
a. Best-in-output
b. Efficiency evaluation
c. Work-in-process
d. Standard Demand
30. A hotel has 200 rooms. If, on a given day, 150 rooms are occupied, which number represents the utilization of hotel
rooms?
a. 33%
b. 50%
c. 66%
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d. 75%
31. An airline has one employee work the counter. A customer arrives on the average of once every 3 minutes, and it takes
on average 2 minutes to process the transaction. What is the probability that a customer must wait for service in the
queue?
a. 0%
b. 33%
c. 66%
d. 100%
32. In one method of calculating utilization, _____ divided by Service Rate × Number of Servers.
a. Resources Available
b. Service Rate
c. Demand Rate
d. Resource Capacity
33. A(n) _____ is the work activity that effectively limits the throughput of the entire process.
a. breakdown
b. bottleneck
c. blockage
d. broadband
34. The process for applying for a work permit at the Manchester department of labor is as follows. First, the
administrator fills out an application (5 minutes) and takes a picture (1 minute). Then, a clerk enters the information and
processes the permit (5 minutes). There are two administrators and three clerks. If the number of licenses per hour for the
administrators is 16 and the number of licenses per hour for the clerks is 20.57, what is the hourly service rate for
administrators?
a. 5
b. 6
c. 10
d. 12
35. _____ is the fraction of time a workstation or individual is busy over the long run.
a. Computation
b. Service Rate
c. Utilization
d. Efficiency
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Answer Key
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chapter 11