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Posted Date: 06 Oct 2009 Posted By:: Manish Jain Member Level: Gold Points: 5 (Rs. 1)

2006 University of Madras B.C.A. Computer Application Quantitative Techniques University Question paper
Time: Three hours Maximum: 100 marks
SECTION A  [5 x 8 = Marks 40]
Answer any FIVE questions. All questions carry equal marks.
1. a. State any two types of models used in OR
b. Define LP Problem.
c. Can a Transportation problem be regarded as a special case of LP problem? Justify your answer.
d. Find the initial b.f.s for the following transportation problem by North – West corner method:
Destination Sources D1 D2 D3 Supply O1 2 3 11 9 O2 1 9 6 6 Demand 7 5 3
e. State Baye’s Theorem
f. Define saddle point.
g. State any 2 components of a network
h. Draw the network for the activities described below: Activity A B C D E F G H Immediate Predecessor   A B C,D C,D E F
i. Describe the queuing model: (M/M/C): (&infinity;/LIFO).
j. Explain the concept : Service discipline
SECTION B  [5 x 6 = Marks 30]
Answer any FIVE questions. All questions carry equal marks.
2. What are the advantages or OR in decision making?
3. Explain the terms: feasible solution, degenerated basic feasible solution, unbounded solution
4. Find the saddle point, if exists:
Player B Player A 1 2 3 4 1 0 7 5 12 2 10 11 9 13 3 9 5 7 2
5. What are the assumptions made in solving a project scheduling by CPM/PERT?
6. Explain the leastcost method to find an initial b.f.s of a transportation problem.
7. Explain Kendall’s notation for queuing models.
8. A fertilizer company distributes its products by trucks. It was found that on an average every 5 minutes one truck arrived and the average loading time was 3 minutes. Determine:
a. the probability that a truck has to wait. b. average waiting time of a truck.
SECTIONC [ 2 x 20 = Marks 40]
Answer BOTH the questions. All questions carry equal marks.
9. a. Solve the following LP problem by graphical method: Maximize z = 28x + 30y Subject to: 6x + 3y = 18 3x + y = 8 4x + 5y = 30 and x,y = 0
b. Solve the following transportation problem:
Destination Problem 1 2 3 4 A 11 22 6 5 75 B 16 31 14 15 60 C 5 21 4 9 40 30 65 55 25
10. a. Draw the network for the following project:
Activity A B C D E F G Immediate Predecessor    A B C D,E Duration (Days) 2 4 3 1 6 5 7 Compute the critical path and float for each activity.
Or
b. Write short notes on:
i. Decision trees
ii. Time estimates used in PERT
iii. Poisson queues
iv. Balanced and unbalanced transportation
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