**1. **Operations Research approach is ______________.

- multi-disciplinary
- scientific
- intuitive
- collect essential data

Correct answer: (A)

multi-disciplinary

multi-disciplinary

**2. **A feasible solution to a linear programming problem ______________.

- must satisfy all the constraints of the problem simultaneously
- need not satisfy all of the constraints, only some of them
- must be a corner point of the feasible region.
- must optimize the value of the objective function

Correct answer: (A)

must satisfy all the constraints of the problem simultaneously

must satisfy all the constraints of the problem simultaneously

**3. **If any value in XB column of final simplex table is negative, then the solution is ______________.

- infeasible
- infeasible
- bounded
- no solution

Correct answer: (B)

infeasible

infeasible

**4. **For any primal problem and its dual______________.

- optimal value of objective function is same
- dual will have an optimal solution iff primal does too
- primal will have an optimal solution iff dual does too
- both primal and dual cannot be infeasible

Correct answer: (C)

primal will have an optimal solution iff dual does too

primal will have an optimal solution iff dual does too

**5. **The difference between total float and head event slack is ______________

- free float
- independent float
- interference float
- linear float

Correct answer: (A)

free float

free float

**6. **An optimal assignment requires that the maximum number of lines which can be drawn through squares with zero opportunity cost should be equal to the number of ______________.

- rows or columns
- rows and columns.
- rows+columns- 1
- rows-columns.

Correct answer: (A)

rows or columns

rows or columns

**7. **To proceed with the Modified Distribution method algorithm for solving an transportation problem, the number of dummy allocations need to be added are______________.

- n
- n-1
- 2n-1
- n-2

Correct answer: (B)

n-1

n-1

**8. **Select the correct statement

- EOQ is that quantity at which price paid by the buyer is minimum
- If annual demand doubles with all other parameters remaining constant, the Economic Order Quantity is doubled
- Total ordering cost equals holding cost
- Stock out cost is never permitted

Correct answer: (C)

Total ordering cost equals holding cost

Total ordering cost equals holding cost

**9. **Service mechanism in a queuing system is characterized by ______________.

- customers behavior
- servers behavior
- customers in the system
- server in the system

Correct answer: (B)

servers behavior

servers behavior

**10. **The objective of network analysis is to______________.

- minimize total project duration
- minimize toal project cost
- minimize production delays, interruption and conflicts
- maximize total project duration

Correct answer: (A)

minimize total project duration

minimize total project duration