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Exam 22: Vehicle Routing and Scheduling

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Question 1

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Which of the following is false regarding learning curves?

A) Learning curves differ from company to company.
B) Learning curves can always be used for indirect labor.
C) Changes in personnel can change the learning curve.
D) The learning curve may spike for a short time even if it is going to drop in the long run.
E) All of the above are false.

F) C) and D)
G) A) and B)

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Question 2

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Using the arithmetic concept determine how long it will take to make the 64^th unit of a product if it took 1 hour to complete the first product with a 50% learning rate.

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2^X=64 => X= 6
Thus the time g...

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Question 3

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In addition to labor, to which other variables have learning curves been applied?

If the learning rate for a process is 80 percent, that same process has a 20 percent __________.

The earliest industrial application of learning curves came from a report by __________.

A job with a 90% learning curve required 20 hours for the initial unit. The fourth unit should require approximately how many hours?

The seventh unit of production took 63.423 minutes while the ninth unit of production took 59.8 minutes. What is the improvement rate?

Your firm has a contract to make 20 specialty lenses for night vision equipment. The first one took 40 hours. Learning is expected at the 85% rate. How long will it take to finish all 20 units?

Which of the following is representative of a firm pursuing a learning curve strategy?

The second unit of production took 9 hours. If the learning curve is 90% how long did the first unit take?

The first unit took 79 hours; the tenth took 46 hours. What learning rate is implied by the data?

The fact that human activities typically improve when they are done on a repetitive basis is described by a

Which of the following is a limitation of the use of learning curves?

If the learning curve for a process is 100 percent, then each unit in a series of units will have the same labor requirements.

The first unit took 10 hours and the fourth unit took 8.1 hours to complete. What is the learning curve?

A company is preparing a bid on a government contract for 40 units of a certain product. The operations manager estimates the assembly time required for the first two units to be 10.4 hours and 8.3 hours, respectively. a. What is the appropriate learning curve? b. What is the average time per unit for the 40 units? c. Which unit, if any, will require approximately one-half the time of the first unit?

The first unit took 10 hours and the third unit took 5.7 hours. What is the improvement rate?

An 80% learning curve means that with each unit increase in production, labor requirements fall by 20%.

The first unit of production took 10 hours with an 80% learning curve. How long will it take to complete both the first and second units?

The first unit of a product took 1,000 hours to build and the learning curve is 85%. How long will it take to make the first 5 units? (Use Table E.3)