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MS-51
Operations Research
1. Explain computational aspect of simplex method for solving
Linear Programming Problems (LPP). Take a problem and apply M- method for
solving the LPP.
2. Five employees of a company are to be assigned to five jobs,
which can be done by any of them. The workers get different wages per hour.
These are: Rs 5 per hour for A, B, and C each, and Rs 3 per hour for D and E
each. The amount of time taken by each employee to do a given job is given in
the following table. Determine the assignment pattern that (a) minimizes the
total time taken, and (b) minimizes the total cost, of getting five units of
work done.
|
|
Employee
|
||||
|
Job
|
A
|
B
|
C
|
D
|
E
|
|
1
|
7
|
9
|
3
|
3
|
2
|
|
2
|
6
|
1
|
6
|
6
|
5
|
|
3
|
3
|
4
|
9
|
10
|
7
|
|
4
|
1
|
5
|
2
|
2
|
4
|
|
5
|
6
|
6
|
9
|
4
|
2
|
3. What is the importance of integer programming models in
supporting managerial decisions? Describe the rationale behind Cutting Plane
Method used for solving integer programming models.
4. (a) Minicomputer
Company purchases a component for which it has a steady usage of 1,000
units per year. The ordering cost is Rs. 50
per order. The estimated cost of money invested in inventory is 25 per cent per
year. The unit cost of the component is Rs 40. Calculate the optimal ordering
policy and total cost of the inventory system, including purchase cost of the
components.
(b) If, in this, the component supplier agrees to offer price discounts
of minimum lot supplies as per schedule given, reassess the decision on the
optimal ordering policy and the total cost as before.
|
Lot size
(Units)
|
Price per unit
|
|
Up to 149
|
Rs. 40
|
|
150-499
|
Rs. 39
|
|
500 or more
|
Rs. 38
|
5. Explain why simulation may be the only method in situations
where it will be extremely difficult to observe actual environment.
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MS-55
Q. "These are many possible structures for SC, but the simplest
view has materials converging on an organization through tiers of suppliers and
products diverging through tiers of customers". Elaborate.
Answer......
Q. What is Bullwhip effect? Explain the various permutations and
combinations to reduce this effect in SCM.
Answer. The bullwhip effect, as this is called, causes erratic
replenishment orders placed on different levels in the supply chain that have
no apparent link to final product demand. The results are excessive inventory
investment,..........
Q. "The leading supply chain planning (SCP) products generally
have many features as compared to ERP software packages" – Give your
elaborate remarks on this statement.
Answer. ........
Q. Identify the need for Performance measurement in Supply Chain
Management. Describe various methods and techniques that could be employed for
the performance measurement of Supply Chain Management
Answer.........
Q. Answer the following questions in brief:
a. What supply chain strategies can rail companies use to stop the
erosion of market share to air travel in case of passengers and road in case of
freight?
b. How can telephone companies protect their markets from competition
from ISP’s using supply chain strategies?
Answer.........
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