MTH601-Operations Research Quiz MCQS #Objective #Questions #MidTerm

1. While solving a LP by Simplex method, which of the following corresponds to corner points of the feasible region in Graphical method?

- non-feasible solution
- basic feasible solution ✔
- non-basic feasible solution
- non-negative solution

2. About which of the following it is true that, “they only signify with the passage of time, the beginning and ending of some activities under no consumption of resources”?

- project
- nodes
- dummy ✔
- branch

3. If we increase the inventory, then the shortage cost will decrease and the carrying cost will ___

- remain constant
- increase ✔
- also decrease
- uncertain

4. Wilson’s model (Purchasing model with no shortages) is of the ___ type

- Probabilistic
- Deterministic ✔

5. In a Project Management, if the Critical activities of a network are delayed then ___

- project finish time will have to extend
- project cost will increase
- more resources have to employed
- All above choices are equivalent ✔

6. If the economic order quantity and the annual demand of a product are 2500 and 5000 units respectively, then WITHOUT any shortage the time between the consecutive orders is ___ months

- 02
- 2.50
- 0.50 ✔
- 1.50

7. While solving a Linear Programming problem, the first step is ___

- to obtain alternate solutions
- to obtain basic feasible solutions
- formulation of the problem ✔
- model building

8. A linear programming model has three basic components; the decision variables, the Objective function and ___

- constraints ✔
- unrestricted variables
- feasible solution
- artificial variable

9. Which of the following is the major assumed difference between the models of Purchasing and Manufacturing without shortage?

- Replacement rate ✔
- Shortage
- Demand
- Item, Setup and Holding Costs

10. For a development project, if its Standard Normal variable = 1.38, expected and the scheduled durations of the project are 100 and 110 days respectively, then Variance in the project length is ___

- -7.246
- -52.50
- 52.50
- 7.246 ✔

11. The draw back of the Graphical method to solve a LP is that the problem of ___ can not be handled by this

- higher dimension(n>2)
- low dimension(n<3) ✔
- duality
- degeneracy

12. In the phase of Late Start and Late Finish, to find the Critical Path in a network flow diagram, which of the following will be taken as latest finish time of the final event?

- Early Start of the final event
- Early finish of final event
- Late start of the final event
- Expected time of final event ✔

13. In resource leveling when two or more jobs compete for same resources, first try to allocate an activity, which is of ___ duration and need to the activity which having next ___ duration

- most likely, pessimistic
- minimum, maximum ✔
- maximum, minimum
- optimistic, most likely

14. By putting the replacement rate ‘R → infinity’ in the Economic Order Quantity (EOQ) of Manufacturing Model with allowed Shortage, then the result is ___

- EOQ of Purchasing Model without Shortage
- EOQ of Manufacturing Model without Shortage
- EOQ of Purchasing Model with allowed Shortage ✔
- invariant

15. Which of the following would be the objective of the efficiency of a certain air conditioning system depending upon temperature ‘x’, pressure ‘y’, moisture ‘w’ and cross-sectional area of outlet ‘u’?

- Minimization ✔
- Inflection
- Average
- Maximization

16. In a project, a network diagram shows the ___ relations of the inter related activities along with their corresponding activity times.

- deterministic and probabilistic
- precedence or succession ✔
- union and intersection
- dummy and artificial

17. In Wilson’s model, Total cost = ___

- Item cost + holding cost + shortage cost + setup cost
- Item cost + holding cost + shortage cost
- Holding cost + shortage cost + setup cost
- Item cost + set up cost + holding cost ✔

18. For a development project, if its standard deviation of project length = 8, expected and scheduled duration of the complete project are 50 and 45 days respectively, then which of the following will be the Standard Normal Variable of the project?

- -1.7677
- -0.625
- 0.625 ✔
- 1.7677

19. A/An ___ is the collection of inter related activities in particular sequence to completion

- node
- event ✔
- project
- branch

20. For a development project, if its Standard Normal variable = 1.38, expected and the schedule durations of the project are 100 and 110 days respectively, then the Standard Deviation in the project length is ___

- 7.246
- -7.246 ✔
- -52.50
- 52.50

21. If for path 1-3-4 time is 5+3=8, for path 1-2-3-4 time is 6+7+3=16 days and for path 1-2-4 time is 6+6 = 12 days, then which of the following is true

- 1-3-4 is critical path
- 1-2-4 is critical path
- 1-2-3-4 is critical path ✔
- 1-4 is critical path

22. In project Management, Program Evaluation and Review Technique (PERT) is based on ___ times

- deterministic
- probabilistic ✔
- stochastic
- serial

23. Which of the following is the major objective of the ABC analysis of inventory?

- To fulfill the demand of items
- To replace the required items in proper time
- To control the inventories
- To classify the items in different categories ✔

24. Which of the following phases are performed to find the critical path in CPM?

- Forward and Backward (Early and Late finish program) ✔
- Program Evaluation and Review
- Resource Scheduling and Allocation
- Precedence and succession

25. Which of the following value is correct for the expected time of an activity having optimistic, pessimistic and most likely times as 4, 8 and 6 days respectively?

- 6.66 days
- 9.33 days
- 6 days ✔
- 4.66 days

26. Which of the following category of items in ABC analysis needs special attention by the management?

- A category ✔
- B category
- C category
- All categories need equal and fair attention

27. Which of the following correspond to the practical limitations of available resources while modeling a real life situation into a linear program?

- Objective function
- Constraints
- Decision variables ✔
- Linear function

28.While identifying the Critical Path of a network flow diagram, the Late Start and Late Finish phase confirms that project start time is ___

- serial
- zero ✔
- infinity
- arbitrary

29. In PERT, the possible variation in activity times is measured from Standard Deviation which is ___ of the difference between Pessimistic and Optimistic times

- one sixth ✔
- one fourth
- one third
- one fifth

30. Which of the following property ensures that the decision variables can be divided into any fractional levels so that the rational (fractional) values for the decision variables are permitted?

- Deterministic
- Additivity
- Proportionality
- Divisibility ✔

31. Which of the following is the objective of Project Management by using PERT and CPM methods, for any project subject to resource constraints?

- To minimize the project time
- To maximize the total project profit
- To minimize the total project cost ✔
- To minimize the resource constraints

32. If we increase the inventory, then the shortage cost will ___

- remain constant
- increase
- decrease ✔
- uncertain

33. In PERT, the possible variation in activity times can be measured from ___ of the corresponding Beta Distribution

- Variance
- Mean
- Expected Time
- Standard Deviation ✔

34. In the phase of Early Start and Early Finish, to find the Critical Path in a network flow diagram, the computations are proceeded from ___ to the final event

- bottom to top
- right to left
- left to right ✔
- top to bottom

35. In a network flow diagram, for an activity (i, j) of duration of three days, if its earliest start time is of two days then which of the following will be its early finish time?

- six days
- one day
- one and half day
- five days ✔

36. In an optimization problem, we seek for maximizing or minimizing a specific quantity, called the ___

- decision variables
- constraints
- feasible solution
- objective function ✔

37. Modeling of a Linear Programming problem from a real life world is a/an ___

- art ✔
- science
- engineering
- technology

38. In a Linear Programming problem which of the following condition is compulsory?

- Least Objective function needs to be linear
- Least constraints need to be linear
- Both Objective function and constraints need to be linear ✔
- Neither objective nor constraints to be linear

39. In a network flow diagram, the precedence relationship among the activities are indicated through ___

- project
- branch
- dummy ✔
- nodes

40. Which of the following is true about the Manufacturing model without Shortage?

- Demand rate = Replacement rate
- Demand rate > Replacement rate
- Demand rate < Replacement rate ✔
- None of the above