Operations Research or Qualitative Approach MCQs

Question. are called mathematical models.
A. Iconic Models
B. Analogue Models
C. Symbolic Models
D. None of the options

Answer: C

Question. For analyzing a problem, decision-makers should study.
A. Its qualitative aspects
B. Its quantitative aspects
C. Both a & b
D. Neither a nor b

Answer: C

Question. The degeneracy in the transportation problem indicates that.
A. Dummy allocation(s) needs to be added
B. The problem has no feasible solution
C. The multiple optimal solution exist
D. a & b but not c

Answer: C

Question. While assigning random numbers in Monte Carlo simulation, it is?
A. Not necessary to assign the exact range of random number interval as the probability
B. Necessary to develop a cumulative probability distribution
C. Necessary to assign the particular appropriate random numbers
D. all of the options

Answer: B

Question. The Hungarian method for solving an assignment problem can also be used to solve.
A. A transportation problem
B. A travelling salesman problem
C. A LP problem
D. Both a & b

Answer: B

Question. Who defined Operations Research as scientific method of providing executive departments with a quantitative basis for decisions regarding the operations under their control?
A. Morse and Kimball 
B. P.M.S. Blackett
C. E.L. Arnoff and M.J. Netzorg
D. None of the options

Answer: A

Question. Operations Research approach is typically based on the use of.
A. Physical model
B. Mathematical model
C. Iconic model
D. Descriptive model

Answer: B

Question. Any column or raw of a simplex table is called a
A. Vector
B. Key column
C. Key Raw
D. None of the options

Answer: A

Question. Which of the following characteristics apply to queuing system?
A. Customer population
B. Arrival process
C. Both a & b
D. Neither a nor b

Answer: C

Question. If there are ‘m’ original variables and ‘n’ introduced variables, then there will be columns in the simplex table.
A. M + n
B. M - n
C. 3 +m + n
D. M + n - 1

Answer: C

Question. A model is.
A. An essence of reality
B. An approximation
C. An idealization
D. all of the options

Answer: D

Question. Service mechanism in a queuing system is characterized by.
A. Server’s behavior
B. Customer’s behavior
C. Customers in the system
D. all of the options

Answer: A

Question. If there are more than one optimum solution for the decision variable the solution is
A. Infeasible
B. Unbounded
C. Alternative
D. None of the options

Answer: C

Question. In Markov analysis, state probabilities must.
A. Sum to one
B. Be less than one
C. Be greater than one
D. None of the options

Answer: A

Question. What can be defined as a useful idle resource which has economic value eg; raw materials, spareparts, finished items, etc?
A. Inventory Control
B. Inventory
C. Inventory Planning
D. None of the options

Answer: B

Question. Which of the following is not a characteristic of the LP?
A. Resources must be limited
B. Only one objective function
C. Parameters value remains constant during the planning period
D. The problem must be of minimization type

Answer: D

Question. Which of the cost estimates & performance measures are not used for economic analysis of a queuing system?
A. Cost per server per unit of time
B. Cost per unit of time for a customer waiting in the system
C. Average number of customers in the system
D. Average waiting time of customers in the system

Answer: D

Question. Operations Research is a
A. Science
B. Art
C. Mathematics
D. Both A and B

Answer: D

Question. If an opportunity cost value is used for an unused cell to test optimality, it should be.
A. Equal to zero
B. Most negative number
C. Most positive number
D. Any value

Answer: B

Question. Dual of the dual is
A. Primal
B. Dual
C. Alternative
D. None of the options

Answer: A

Question. The best use of linear programming technique is to find an optimal use of.
A. Money
B. Manpower
C. Machine
D. all of the options

Answer: D

Question. Operations Research approach is.
A. Multi disciplinary
B. Scientific
C. Initiative
D. all of the options

Answer: C

Question. Which of the following is not one of the assumptions of Markov analysis:
A. There are a limited number of possible states
B. A future state can be predicted from the preceding one
C. There are limited number of future periods
D. all of the options

Answer: C

Question. An iso-profit line represents.
A. An infinite number of solutions all of which yield the same profit
B. An infinite number of solution all of which yield the same cost
C. An infinite number of optimal solutions
D. A boundary of the feasible region

Answer: A

Question. Constraints in LP problem are called active if they.
A. Represent optimal solution
B. At optimality do not consume all the available resources
C. Both a & b
D. None of the options

Answer: A

Question. As simulation is not an analytical model, therefore the result of simulation must be viewed as.
A. Unrealistic
B. Exact
C. Approximation
D. Simplified

Answer: C

Question. Operations Research cannot give perfect to problems.
A. Answers
B. Solutions
C. Both A and B
D. Decisions

Answer: C

Question. Maximization of objective function in an LP model means.
A. Value occurs at allowable set of decisions
B. Highest value is chosen among allowable decisions
C. Neither of above
D. Both a & b

Answer: A

Question. In the long run, the state probabilities become 0 & 1.
A. In no case
B. In same cases
C. In all cases
D. Cannot say

Answer: C

Question. A solution may be extracted from a model either by.
A. Conducting experiments on it
B. Mathematical analysis
C. Both A and B
D. Diversified Techniques

Answer: C

Question. Key concept under which technique are network of events and activities , resource allocation, time and cost considerations, network paths and critical paths?
A. Game Theory
B. Network Analysis
C. Decision Theory
D. None of the options

Answer: B

Question. The initial solution of a transportation problem can be obtained by applying any known method. However, the only condition is that.
A. The solution be optimal
B. The rim conditions are satisfied
C. The solution not be degenerate
D. all of the options

Answer: B

Question. An assignment problem can be solved by.
A. Simplex method
B. Transportation method
C. Both a & b
D. None of the options

Answer: C

Question. The cost of providing service in a queuing system decreases with.
A. Decreased average waiting time in the queue
B. Decreased arrival rate
C. Increased arrival rate
D. None of the options

Answer: D

Question. The solution need not be in numbers.
A. Prime Number
B. Whole Number
C. Complex Number
D. None of the options

Answer: B

Question. Customer behavior in which the customer moves from one queue to another in a multiple channel situation is.
A. Balking
B. Reneging
C. Jockeying
D. Altering

Answer: C

Question. The mathematical model of an LP problem is important because.
A. It helps in converting the verbal description & numerical data into mathematical expression
B. Decision-makers prefer to work with formal models
C. It captures the relevant relationship among decision factors
D. It enables the use of algebraic technique

Answer: A

Question. If a matrix of transition probability is of the order n*n, then the number of equilibrium equations would be.
A. n
B. n-1
C. n+1
D. None of the options

Answer: A

Question. An assignment problem is a special case of transportation problem, where.
A. Number of rows equals number of columns
B. All rim conditions are 1
C. Values of each decision variable is either 0 or 1
D. all of the options

Answer: D

Question. Priority queue discipline may be classified as.
A. Finite or infinite
B. Limited & unlimited
C. Pre-emptive or non-pre-emptive
D. all of the options

Answer: C

Question. The smallest quantity is chosen at the corners of the closed path with negative sign to be assigned at unused cell because.
A. It improve the total cost
B. It does not disturb rim conditions
C. It ensure feasible solution
D. all of the options

Answer: C

Question. Non-negativity condition is an important component of LP model because.
A. Variables value should remain under the control of the decision-maker
B. Value of variables make sense & correspond to real-world problems
C. Variables are interrelated in terms of limited resources
D. None of the options

Answer: B

Question. The transition matrix elements remain positive from one point to the next. This property is known as:
A. Steady-state property
B. Equilibrium property
C. Regular property
D. all of the options

Answer: C

Question. models involves the allocation of resources to activities in such a manner that some measure of effectiveness is optimized.
A. Sequencing
B. Allocation Models
C. Queuing Theory
D. Decision Theory

Answer: B

Question. All the parameters in the linear programming model are assumed to be
A. Variables
B. Constraints
C. Functions
D. None of the options

Answer: B

Question. The quantitative approach to decision analysis is a.
A. Logical approach
B. Rational approach
C. Scientific approach
D. all of the options

Answer: C

Question. What refers to Linear Programming that includes an evaluation of relative risks and uncertainties in various alternatives of choice for management decisions?
A. Probabilistic Programming
B. Stochastic Programming
C. Both A and B
D. Linear Programming

Answer: C

Question. The variables whose coefficient vectors are unit vectors are called
A. Unit Variables
B. Basic Variables
C. Non basic Variables
D. None of the options

Answer: B

Question. The dummy source or destination in a transportation problem is added to.
A. Satisfy rim conditions
B. Prevent solution from becoming degenerate
C. Ensure that total cost does not exceed a limit 
D. None of the options

Answer: A

Question. In maximization cases, are assigned to the artificial variables as their coefficients in the objective function.
A. +m
B. -m
C. 0
D. None of the options

Answer: A

Question. Who coined the term Operations Research?
A. J.F. McCloskey
B. F.N. Trefethen
C. P.F. Adams
D. Both A and B

Answer: D

Question. models are obtained by enlarging or reducing the size of the item.
A. Iconic Models
B. Analogue Models
C. Symbolic Models
D. None of the options

Answer: A

Question. are the representation of reality.
A. Models
B. Phases
C. Both A and B
D. None of the options

Answer: A

Question. In LPP, degeneracy occurs in stages.
A. One
B. Two
C. Three
D. Four

Answer: B

Question. While plotting constraints on a graph paper, terminal points on both the axes are connected by a straight line because?
A. The resources are limited in supply
B. The objective function as a linear function
C. The constraints are linear equations or inequalities
D. all of the options

Answer: C

Question. Operations Research attempts to find the best and solution to a problem.
A. Optimum
B. Perfect
C. Degenerate
D. None of the options

Answer: A

Question. The solution space (region) of an LP problem is unbounded due to.
A. An incorrect formulation of the LP model
B. Objective function is unbounded
C. Neither a nor b
D. Both a & b

Answer: C

Question. A problem is classified as Markov chain provided.
A. There are finite number of possible states
B. States are collectively exhaustive & mutually exclusive
C. Long-run probabilities of being in a particular state will be constant over time
D. all of the options

Answer: D

Question. If there were n workers & n jobs there would be.
A. n! solutions
B. (n-1)! solutions
C. (n!)n solutions
D. n solutions

Answer: A