GU Operation Research in Business Question Paper 2021 | Gauhati University BCom 3rd Sem CBCS

Gauhati University BCom 3rd Sem Operation Research in Business Question Paper 2021 (Held in 2022)

Paper: COM-HG-3026

(Operation Research in Business) 

Full Marks: 80

Time: Three hours

The figures in the margin indicate full marks for the questions.

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Answer Questions Nos. 1, 2, 3 and any four from the rest.

1. Answer the following as directed: 1×10=10

1. What is network?
   
   

2. What is event?
   
   

3. What is PERT?
   
   

4. What is CPM?
   
   

5. The word inventory means _______.
   
   

6. Write one benefit of controlling inventory.
   
   

7. Write one limitation of EOQ.
   
   

8. The set of feasible solutions to an LPP is a _______ set.
   
   

9. What is adjacent activity?
   
   

10. What is ABC analysis?
    
    

2. Answer the following in short: 2×5=10

1. What is the difference between ABC analysis and VED analysis?
   
   

2. What is graphical method?
   
   

3. Define EOQ in inventory control.
   
   

4. When do we replace an item?
   
   

5. What is shortage cost?
   
   

3. Answer any four questions: 5×4=20

1. Write the concept of linear programming.
   
   

2. Solve graphically the linear programming problem (LPP):
   
   

3. Explain the different types of replacement models.
   
   

4. Discuss various costs involved in inventory models.
   
   

5. Group the items given below into an ABC classification:
   
   

Item No.	3	4	2	1	7	8	6	5	9	10
Annual Usage: (in 000 Rs.)	75	37	14	36	32	8	16	11	95	4

4. Answer any four questions: 10×4=40

1. XYZ leather company manufactures two types of soccer balls A and B. Each type of ball requires work by both types of employees – semi-skilled and skilled. The semi-skilled employees employ machines in the manufacture of balls while the skilled employees hand-sew the balls. The available time (per week) for each type of employee and the time requirement for each type of balls is given below:
   
   

Type of employee	Manufacturing time requirement (in hours)	Time available  (hr/week)
	Balls A	Ball B
Semi-skilled  Skilled	3 5	4 7	100 175

The cost of an hour of semi-skilled labour is Rs. 10 and that of an hour of skilled labour is Rs. 16. To meet weekly demand requirements at least 25 balls of type A and at least 20 balls of type B must be manufactured. Formulate this problem as an LPP model to minimise the cost of production. 

2. Solve by simplex method:
   
   

3. (1) Construct a network diagram and find the EST and LST for the following data:
   
   

Job	Description	Successor Activity	Time in minutes
S A B C D F F	Start Proceeding letter  Dictating letter  Order execution  Supervision  Dispatching  Finish	A B D E E F None	0 4 3 7 6 2 0

(2) Write the benefits of replacement problem. 

4. Explain briefly the replacement of items whose maintenance cost increases with time and the value of money also changes with time.
   
   

5. Write short notes on:
   
   

1. Nature and characteristic of O.R.
   
   

2. The carrying cost or storage cost.
   
   

6. What are the costs associated with inventory? Distinguish between deterministic and stochastic model in inventory theorem. 4+6=10
   
   

7. Write an explanatory note on evolution of operation research.
   
   

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Also Read :- GU B.Com 3rd Sem All Question Papers, Solved & PDF