In balancing an assembly line, workstation cycle time has to be less than the time
between successive units coming off the end of the line.
The unit improvement factor for a 60 percent learning curve at 25 units is 0.0933. The
first and second timings of a person doing a job are 10 minutes and 6 minutes,
respectively. The learning-adjusted time estimate for the unit number 25 is 0.9330
minute.
The key difference between a fixed-order-quantity inventory model where demand is
known and one where demand is uncertain is in computing the reorder point.
The central problem in virtually every waiting line situation is a decision balancing the
costs of adding services with the costs of waiting.
Developing strategies to close capacity gaps (where utilization of a resource exceeds
capacity available) is most often accomplished by acquisition of more resources
through expansion and new facility construction.
Operations and supply chain processes can be conveniently categorized as planning,
sourcing, making, and delivering.
Defects often occur during changeovers.
The sales and operations planning process consists of a series of meetings.
The supply chain design module provides a centralized overview of the entire supply
chain and key performance indicators.
In the functional silo approach, the purchasing function typically considers quality a
goal.
The economic order quantity (EOQ) lot-sizing technique uses the ‘square root formula”
to balance setup cost and carrying cost.
Most purchasers of electronic products cannot fully operate them and use only a small
number of the available features.
In an overview of the major operations planning activities in a typical logistics
organization, which of the following activities most immediately follows aggregate
sales and operations planning?
A. Process planning
B. Strategic capacity planning
C. Vehicle dispatching
D. Vehicle capacity planning
E. Warehouse receipt planning
When work has been scheduled in a shop that does not have sufficient resources to
complete the schedule on time, the system that generated the schedule is called which
of the following?
A. Infinite loading
B. Machine-limited
C. Finite loading
D. Labor-limited
E. Constrained
A company has a MAD of 10. It wants to have a 99.7 percent control limit on its
forecasting system. Its most recent tracking signal value is 3.1. What can the company
conclude from this information?
A. The forecasting model is operating acceptably.
B. The forecasting model is out of control and needs to be corrected.
C. The MAD value is incorrect.
D. The upper control value is less than 20.
E. It is using an inappropriate forecasting methodology.
Which of the following queue disciplines is discussed in the textbook?
A. Emergencies first
B. Garner-Whitten formula
C. Newest customer first
D. Patient customers last
E. None of these
In the design of retail service layouts, the term “ambient conditions” could refer to
which of the following?
A. Temperature
B. How much money a customer spends
C. How long the customer stays
D. Employee morale
E. Customers’ perceptions of the service
An advantage of a make-to-stock process is which of the following?
A. It features rapid delivery of a standard product.
B. All units of output are unique.
C. It responds directly to customer orders.
D. It allows the firm to avoid inventory costs.
E. It combines the best features of other processes.
You have just used the capability index (Cpk) formulas to compute the two values “min
[1, 1].” Which of the following is the proper interpretation of these numbers?
A. The true capability index value is exactly 1.
B. The mean of the production process has shifted to the left of the design limits.
C. The mean of the production process has shifted to the right of the design limits.
D. The mean has not shifted at all.
E. None of these
The centroid method for plant location uses which of the following data?
A. Volume of goods to be shipped between existing points
B. Inbound transportation costs
C. Transport times between facilities
D. Correlation matrix of existing facilities
E. Probabilities and payoffs
If a firm produced a standard item with relatively stable demand, the smoothing
constant alpha (reaction rate to differences) used in an exponential smoothing
forecasting model would tend to be in which of the following ranges?
A. 5 to 10 percent
B. 20 to 50 percent
C. 20 to 80 percent
D. 60 to 120 percent
E. 90 to 100 percent
Various financial data for SunPath Manufacturing for 2012 and 2013 follow.
What is the percentage change in the multifactor labor and raw materials productivity
measure for SunPath between 2012 and 2013?
A. -9.22
B. 2.33
C. -0.53
D. -2.88
E. 10.39
The probability associated with accepting a low-quality lot is denoted in acceptance
sampling with the Greek letter alpha.
A company is concerned about the number of customers who have to wait for service in
its customer service department. Assume the rate at which customers are serviced is 12
per hour. Using the infinite queuing notion for the models presented in the textbook,
which of the following is the mean time between arrivals?
A. 12 minutes
B. 6 minutes
C. 2 minutes
D. 1 minute
E. None of these
What is transaction processing?
A. The decision support system used to efficiently handle multiple transactions
B. The posting and tracking of the detailed activities of a business
C. The movement of paperwork through a system using a decision tree
D. The scheduling of machinery to minimize time and scrap
Consumer electronics is an example of a product developed in which variant of the
generic product development process?
A. Technology-push products
B. Customized products
C. Platform products
D. Quick-build products
E. Process-intensive products
Which of the following is a priority rule used to schedule the sequence of jobs in a
production operation?
A. Last-come, first-served
B. Last complaint first
C. First on hand first
D. Longest slack time first
E. Parts on hand first
In the service-system design matrix, an Internet and on-site technology service
encounter is expected to have which of the following?
A. High sales opportunity
B. High degree of customer/server contact
C. Low production efficiency
D. High production efficiency
E. None of these
A company wants to generate a forecast for unit demand for year 2014 using
exponential smoothing. The actual demand in year 2013 was 120. The forecast demand
in year 2013 was 110. Using these data and a smoothing constant alpha of 0.1, which of
the following is the resulting year 2014 forecast value?
A. 100
B. 110
C. 111
D. 114
E. 120
You have just timed a person doing a job a few times. The first time it took the person
25 minutes, the second time it took 20 minutes, and the third time it took 17.55 minutes.
Which learning curve unit improvement factor should you use?
A. 25 percent
B. 75 percent
C. 80 percent
D. 85 percent
E. 90 percent
Which of the following is the stage in the operations consulting process that
immediately follows “analyze problem”?
A. Design, develop, and test alternative solutions
B. Develop systematic performance measures
C. Present final report
D. Assure client satisfaction
E. Implement changes
Various financial data for SunPath Manufacturing for 2012 and 2013 follow.
What is the percentage change in the energy partial productivity measure for SunPath
between 2012 and 2013?
A. -9.22%
B. 2.33%
C. -0.53%
D. 2.88%
E. 22.2%
What is it called when a firm controls most of the activities in its supply chain?
___________________________________
In getting your first driver’s license, several steps had to be taken. First, you took the
written test. Then you took the driving test. Then your photograph was taken and the
license made. What was the queuing system line structure in the Department of Motor
Vehicles? ________________________________
What does the acronym “CTQ” stand for? _________________________________
Describe an example of industrial learning where learning curve analysis might be
useful.
What is the difference between finite and infinite loading?
List three managerial guidelines for implementation of reengineering.
(1) ___________________________
(2) ___________________________
(3) ___________________________
What are the advantages and disadvantages of using a make-to-order process compared
to the advantages and disadvantages of a make-to-stock process?
What does the text mean when it states that rather than to search for the perfect forecast
one should learn to live with inaccurate forecasts?