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Operations Management is attracting increasing attention due to the recent trends in the industrial world. Which of the following statements correctly represents this recent change?
The percentage of the world's output produced by the U.S. has been steadily increasing since 1960.
Compared to the other industrial countries such as Italy and France, the U.S. has a higher rate of productivity growth since 1960. *
Japan is gaining share of the U.S. market not only in smokestack industries, but also in high-tech industries. d.
Compared to manufacturing industries, the service sectors of the U.S. economy has enjoyed much faster growth in productivity during recent decades. e. Third World Countries are more productive than the U.S..
2. Productivity can be increased in a manufacturing environment by:
increasing production efficiency by increasing the standard times for jobs.
b. reducing production labor costs and material costs.
c. increasing the number of goods produced while holding all production costs constant. *
d. only (b) and (c)
e. (a), (b), and (c)
3. Which one of the following statements about an FMS is true?
a. Since an FMS does not require a large initial investment, it can be easily installed.
b. An FMS cannot be used with NC or CNC equipment.
c. An FMS is limited to machining operations, since assembly operations are not adaptable to this type of technology. *
d. An FMS is flexible, due to in large measure its automatic tool interchange capability.
4. The objective of process layout analysis is to:
a. maximize the quantity of items processed through the assembly line
b. balance the line such that each station does equal amounts of work * c. determine a layout with flexibility in terms of production process
d. a, b, and c are correct
e. none of the above
5. An advantage of the cellular layout is that:
a. specialists with common skills (e.g., welders) are near together so that they can learn from each other and help each other. b. it encourages operators to become more specialized and skillful in particular trade instead of learning just a little about several trades. c. larger pieces of equipment are usable, which permits economies of scale. * d. it cuts setup and flow times.
Which one of the following systems is most closely related to this quotation:
"All bolts might be assigned to the same part family because they all require the same basic processing steps regardless of variations in size and shape."
a. Line processing.
c. Flexible automation.
7. Which one of the following statements abut quality control is true? * a. Measurement by attributes is a simple yes or no decision.
b. Complete inspection is used when inspection cost is high.
c. Sampling inspection is used when the cost of passing a defective unit is high relative to cost of inspection. d. Measurement by variables is often used when the quality specifications are complex.
8. "Special cause" refers to quality deviations that are:
a. relatively minor.
b. traceable to a specific reason.
c. within the three-standard-deviation area encompassed by process control limits. d. all of the above.
9. Trend cannot be estimated by
drawing a free-hand curve by inspection of plotted data points
double exponential smoothing.
c. least squares regression.
d. simple exponential smoothing
10. In exponential smoothing, what happens as the value of the smoothing constant increases? *
a. the forecast responds more quickly to the forecast error at time t.
b. the forecast includes a larger percentage of the forecast made for period t.
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