Operations Research Questions and Answers Part-10

1. The total opportunity cost matrix is obtained by doing ______________.
a) row operation on row opportunity cost matrix
b) column operation on row opportunity cost matrix
c) column operation on column opportunity cost matrix
d) none of the above.

Answer: b

2. The simplex method is also called the ______________.
a) dual simplex method.
b) Modi method
c) simplex technique
d) Big-M method

Answer: c

3. A degenerate solution is one that ______________.
a) gives an optimum solution to the Linear Programming Problem
b) gives zero value to one or more of the basic variables
c) yields more than one way to achieve the objective
d) makes use of all the available resources

Answer: b

4. . Graphical method of linear programming is useful when the number of decision variable are ______________.
a) 1
b) 2
c) 3
d) 4

Answer: b

5. In the optimal simplex table, Zj-Cj=0 value indicates ______________.
a) alternative solution
b) bounded solution
c) infeasible solution
d) unbounded solution

Answer: a

6. If primal linear programming problem has a finite solution, then dual linear programming problem should ______________.
a) have optimal solution
b) satisfy the Rim condition
c) have degenerate solution
d) have non-degenerate solution

Answer: b

7. While solving an assignment problem, an activity is assigned to a resource through a square with zero opportunity cost because the objective is to______________.
a) minimize total cost of assignment.
b) reduce the cost of assignment to zero
c) reduce the cost of that particular assignment to zero
d) reduce total cost of assignment

Answer: a

8. If the procurement cost used in the formula to compute EOQ is half of the actual procurement cost, the EOQ so obtained will be ______________
a) half of EOQ
b) one third of EOQ
c) one fourth of EOQ
d) 0.707 time EOQ

Answer: d

9. The calling population is assumed to be infinite when ______________.
a) capacity of the system is infinite
b) arrivals are independent of each other
c) service rate is faster than arrival rate
d) all customers arrive at once

Answer: b

10. If an activity has zero slack, it implies that______________.
a) the project is progressing well
b) it is a dummy activity
c) it lies on the critical path
d) it lies a non critical path

Answer: c