The quantitative approach to decision analysis is a.
A. Logical approach
B. Rational approach
C. Scientific approach
D. All of the above
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Operations Research approach is typically based on the use of.
A. Physical model
B. Mathematical model
C. Iconic model
D. Descriptive model
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In a manufacturing process, who takes the decisions as to what quantities and which process or processes are to be used so that the cost is minimum and profit is maximum?
A. Supervisor
B. Manufacturer
C. Producer
D. Production manager
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For analyzing a problem, decision-makers should study.
A. Its qualitative aspects
B. Its quantitative aspects
C. Both a & b
D. Neither a nor b
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A model is.
A. An essence of reality
B. An approximation
C. An idealization
D. All of the above
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Managerial decisions are based on.
A. An evaluation of quantitative data
B. The use of qualitative factors
C. Results generated by formal models
D. All of the above
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The initial solution of a transportation problem can be obtained by applying any known method. However, the only condition is that.
A. The solution be optimal
B. The rim conditions are satisfied
C. The solution not be degenerate
D. All of the above
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The dummy source or destination in a transportation problem is added to.
A. Satisfy rim conditions
B. Prevent solution from becoming degenerate
C. Ensure that total cost does not exceed a limit
D. None of the above
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The occurrence of degeneracy while solving a transportation problem means that.
A. Total supply equals total demand
B. The solution so obtained is not feasible
C. The few allocations become negative
D. None of the above
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An alternative optimal solution to a minimization transportation problem exists whenever opportunity cost corresponding to unused route of transportation is:
A. Positive & greater than zero
B. Positive with at least one equal to zero
C. Negative with at least one equal to zero
D. None of the above
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One disadvantage of using North-West Corner rule to find initial solution to the transportation problem is that.
A. It is complicated to use
B. It does not take into account cost of transportation
C. It leads to a degenerate initial solution
D. All of the above
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The solution to a transportation problem with ‘m’ rows (supplies) & ‘n’ columns (destination) is feasible if number of positive allocations are.
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If an opportunity cost value is used for an unused cell to test optimality, it should be.
A. Equal to zero
B. Most negative number
C. Most positive number
D. Any value
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During an iteration while moving from one solution to the next, degeneracy may occur when.
A. The closed path indicates a diagonal move
B. Two or more occupied cells are on the closed path but neither of them represents a corner of the path.
C. Two or more occupied cells on the closed path with minus sign are tied for lowest circled value
D. Either of the above
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The large negative opportunity cost value in an unused cell in a transportation table is chosen to improve the current solution because.
A. It represents per unit cost reduction
B. It represents per unit cost improvement
C. It ensure no rim requirement violation
D. None of the above
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The smallest quantity is chosen at the corners of the closed path with negative sign to be assigned at unused cell because.
A. It improve the total cost
B. It does not disturb rim conditions
C. It ensure feasible solution
D. All of the above
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When total supply is equal to total demand in a transportation problem, the problem is said to be?
A. Balanced
B. Unbalanced
C. Degenerate
D. None of the above
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Which of the following methods is used to verify the optimality of the current solution of the transportation problem?
A. Least cost method
B. Vogel’s approximation method
C. Modified distribution method
D. All of the above
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The degeneracy in the transportation problem indicates that
A. Dummy allocation(s) needs to be added
B. The problem has no feasible solution
C. The multiple optimal solution exist
D. a & b but not c
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An assignment problem is considered as a particular case of a transportation problem because.
A. The number of rows equals columns
B. All xij = 0 or 1
C. All rim conditions are 1
D. All of the above
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