Question 1

When using the stepping-stone method,the improvement index for an unused cell equals the shipping cost associated with that cell.

Accepted Answer

A) True 
 B)False

Question 2

Degeneracy in a transportation problem is when no closed path exists for evaluating an unused cell.

Accepted Answer

A) True 
 B)False

Question 3

The ________ is an iterative technique for moving from an initial feasible solution to an optimal solution in the transportation method.

Accepted Answer

stepping-s

Question 4

A feasible solution in transportation models is one in which all of the supply and demand constraints are satisfied.

Accepted Answer

A) True 
 B)False

Question 5

For the transportation problem below,construct an initial feasible solution using the intuitive method.

Accepted Answer

The lowest cost in the matrix is 7;assig

Question 6

A manufacturer of semiconductor "wafers" has been attempting to convert its operations to practices more in keeping with JIT principles.The firm is now paying much more attention to the transit time between one processing stage and the next.The plant has a somewhat haphazard pattern of machine locations,partly because the machines were purchased and installed at different times,partly from a shortage of floor space,and partly from previous experiments with work cells.The bottom line is this: there are four machines that perform a certain processing phase,and three machines that perform the next phase.All units of a large class of wafers go through these two phases.The table below displays the transit time,in minutes,from each machine of the first phase to each machine of the second.Machine 3 is not really 100 minutes away from machine B;the company has prohibited that combination because of quality problems associated with that specific pairing.Supply and demand quantities are in wafers processed per week.Develop a transit time minimizing solution for this firm.What is the total transit time of this solution? Which machines are fully utilized? Which machines have some capacity unused or requirements unfilled? Was the prohibition on the 3-B combination honored?

Accepted Answer

The solution appears in the software-gen

Question 7

The three information needs of a transportation problem are the origin points and the capacity at each,the destination points and the demand at each,and ________.

Accepted Answer

the cost of shipping

Question 8

To handle degeneracy,a very small quantity is placed in one of the unused squares.

Accepted Answer

A) True 
 B)False

Question 9

The purpose of the transportation approach for location analysis is to minimize which of the following?

Accepted Answer

A) total costs 
B) total variable costs 
C) total fixed costs 
D) total shipping costs 
E) the number of shipments 
A) total costs 
B) total variable costs 
C) total fixed costs 
D) total shipping costs 
E) the number of shipments

Question 10

The northwest-corner rule's biggest flaw is that:

Accepted Answer

A) it ignores costs. 
B) it cannot generate feasible solutions. 
C) it never generates ideal solutions. 
D) it ignores shipping time. 
E) There are no major flaws. 
A) it ignores costs. 
B) it cannot generate feasible solutions. 
C) it never generates ideal solutions. 
D) it ignores shipping time. 
E) There are no major flaws.

Question 11

When is it necessary to add dummy sources or destinations to a transportation problem?

Accepted Answer

It is necessary to add dummy s

Question 12

The initial solution to a transportation problem can be generated several ways,so long as:

Accepted Answer

A) it minimizes cost. 
B) it ignores cost. 
C) all supply and demand conditions are satisfied. 
D) degeneracy does not exist. 
E) all cells are filled. 
A) it minimizes cost. 
B) it ignores cost. 
C) all supply and demand conditions are satisfied. 
D) degeneracy does not exist. 
E) all cells are filled.

Question 13

Which of the following is NOT needed in order to use the transportation model?

Accepted Answer

A) the source points and their capacity 
B) the fixed costs of source points 
C) the destination points and their demand 
D) the cost of shipping one unit from each source to each destination 
E) All of these are needed. 
A) the source points and their capacity 
B) the fixed costs of source points 
C) the destination points and their demand 
D) the cost of shipping one unit from each source to each destination 
E) All of these are needed.

Question 14

A transportation problem with 8 sources and 6 destinations will have an optimal solution that uses at most 13 of the 48 possible routes.

Accepted Answer

A) True 
 B)False

Question 15

When using the stepping-stone method for a minimization problem,the number of units that reallocates corresponds to the smallest number found in the cells containing minus signs.

Accepted Answer

A) True 
 B)False

Question 16

One difference in the stepping-stone method compared to the northwest-corner and intuitive methods is:

Accepted Answer

A) the stepping-stone method never finds a feasible solution. 
B) the stepping-stone method ignores costs. 
C) the stepping-stone method ALWAYS finds a lower-cost solution. 
D) the stepping-stone method guarantees an optimal solution. 
E) the stepping-stone method does not consider factory capacities. 
A) the stepping-stone method never finds a feasible solution. 
B) the stepping-stone method ignores costs. 
C) the stepping-stone method ALWAYS finds a lower-cost solution. 
D) the stepping-stone method guarantees an optimal solution. 
E) the stepping-stone method does not consider factory capacities.

Question 17

A transportation model fills one-half of its cells under the non-degenerate optimal solution.Which of the following most closely describes the number of sources compared to the number of destinations?

Accepted Answer

A) 1 to 1 
B) 2 to 2 
C) 3 to 3 
D) 4 to 3 
E) 4 to 4 
A) 1 to 1 
B) 2 to 2 
C) 3 to 3 
D) 4 to 3 
E) 4 to 4

Question 18

Consider the transportation problem in the data set and optimal solution below.Verify by hand or by calculator (show your work)the value of the total shipping cost.

Accepted Answer

The value of the tot

Question 19

What is the difference between a feasible solution and an optimal solution?

Accepted Answer

A feasible solution,like in linear progr

Question 20

Which of the following is NOT information needed for a transportation problem?

Accepted Answer

A) the cost of shipping one unit from each origin to each destination 
B) the set of destinations and the demand at each 
C) the set of origins and the demand at each origin 
D) the list of sources and the capacity at each 
E) None of the above is needed. 
A) the cost of shipping one unit from each origin to each destination 
B) the set of destinations and the demand at each 
C) the set of origins and the demand at each origin 
D) the list of sources and the capacity at each 
E) None of the above is needed.

Exam 24: Transportation Modeling

When using the stepping-stone method,the improvement index for an unused cell equals the shipping cost associated with that cell.

Degeneracy in a transportation problem is when no closed path exists for evaluating an unused cell.

The ________ is an iterative technique for moving from an initial feasible solution to an optimal solution in the transportation method.

A feasible solution in transportation models is one in which all of the supply and demand constraints are satisfied.

For the transportation problem below,construct an initial feasible solution using the intuitive method.

The three information needs of a transportation problem are the origin points and the capacity at each,the destination points and the demand at each,and ________.

To handle degeneracy,a very small quantity is placed in one of the unused squares.

The purpose of the transportation approach for location analysis is to minimize which of the following?

The northwest-corner rule's biggest flaw is that:

When is it necessary to add dummy sources or destinations to a transportation problem?

The initial solution to a transportation problem can be generated several ways,so long as:

Which of the following is NOT needed in order to use the transportation model?

A transportation problem with 8 sources and 6 destinations will have an optimal solution that uses at most 13 of the 48 possible routes.

When using the stepping-stone method for a minimization problem,the number of units that reallocates corresponds to the smallest number found in the cells containing minus signs.

One difference in the stepping-stone method compared to the northwest-corner and intuitive methods is:

A transportation model fills one-half of its cells under the non-degenerate optimal solution.Which of the following most closely describes the number of sources compared to the number of destinations?

Consider the transportation problem in the data set and optimal solution below.Verify by hand or by calculator (show your work)the value of the total shipping cost.

What is the difference between a feasible solution and an optimal solution?

Which of the following is NOT information needed for a transportation problem?

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