Operation Research
Objective Question
1.
The mathematical technique
for finding the best use of limited resources in an optimum manner is called linear programming.
2.
The linear programming
techniques can be applied successfully to industries like iron & steel, food processing, oil & chemical, banking.
3.
The graphical method to solve
LPP is useful when there are only to decision variables, because more than two coordinates
are difficult to be represented on a graph paper.
4. Fixed ratio is equal to Old row
number in key column/ key number.
5.
The simplex method is the
basic method for linear programming.
6. Graphical method, simplex method & transportation method are
concerned with linear programming.
7.
In simplex method of linear
programming , the objective row of the matrix consists of coefficient of the objective function , which is the
profit contribution per unit of each of the products.
8. In linear programming
shadow prices are value
assigned to one unit of capacity
9. In simplex method, if all
the basic variables are greater than zero , the solution is called nondegenerate.
10. In assignment model 1. degeneracy always present in all the
problems,2. Number of resources is equal to number of jobs,3. Only one
unit from the ith source can be assigned to any one of its destination
11. Fulkerson’s rule is connected with numbering
of event in PERT/CPM
12. The optimality of a transportation problem is determined by the
application of Modi Method.
13. Optimality is reached when all index values are positive.
14. LPP stand for Linear Programming
Problem.
15. A set of two or more vertices which belong to the network &
may represent event, place, stage or a storage point is called node/vertice/points.
16. The final  end  destination node is called sink node.
17. For any network, value of the maximum flow from the source to sink
is equal to the capacity of minimal cut.
18. A collection of oriented branches such that every oriented path
from source to sink contains atleast one branch in it , is a cut in a network.
19. In a flow network ,arcs A & B only are directly connected with
the sources & arcs P,Q,R are directly connected to the sink. The
capacities of the arcs A,B,P,Q,R are as 70,50,30,40 & 20 respectively.
The maximum flow through the network cannot exceed 90.
***Difference
b/w PERT & CPM

Thursday, December 31, 2015
Thursday, December 31, 2015
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