Operations Research MCQ

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• Biased random sampling is made from among alternatives which have.
  ক

  Equal probability

  খ

  Unequal probability

  গ

  Probability which do not sum to 1

  ঘ

  None of the above
• Which of the following is not the special purpose simulation language?
  ক

  BASIC

  খ

  GPSS

  গ

  GASP

  ঘ

  SIMSCRIPT
• Which of the following is not one of the assumptions of Markov analysis:
  ক

  There are a limited number of possible states

  খ

  A future state can be predicted from the preceding one

  গ

  There are limited number of future periods

  ঘ

  All of the above
• The first-order Markov chain is generally used when.
  ক

  Transition probabilities are fairly stable

  খ

  Change in transition probabilities is random

  গ

  No sufficient data are available

  ঘ

  All of the above
• In a matrix of transition probability, the element aij where i=j is a.
  ক

  Gain

  খ

  Loss

  গ

  Retention

  ঘ

  None of the above
• A calling population is considered to be infinite when.
  ক

  All customers arrive at once

  খ

  Arrivals are independent of each other

  গ

  Arrivals are dependent upon each other

  ঘ

  All of the above
• The calling population is assumed to be infinite when.
  ক

  Arrivals are independent of each other

  খ

  Capacity of the system is infinite

  গ

  Service rate is faster than arrival rate

  ঘ

  All of the above
• Which of the following is not a key operating characteristics apply to queuing system?
  ক

  Utilization factor

  খ

  Percent idle time

  গ

  Average time spent waiting in the system & queue

  ঘ

  None of the above
• Which of the following characteristics apply to queuing system?
  ক

  Customer population

  খ

  Arrival process

  গ

  Both a & b

  ঘ

  Neither a nor b
• Customer behavior in which the customer moves from one queue to another in a multiple channel situation is.
  ক

  Balking

  খ

  Reneging

  গ

  Jockeying

  ঘ

  Altering
• Alternative solutions exist of an LP model when.
  ক

  One of the constraints is redundant

  খ

  Objective function equation is parallel to one of the constraints

  গ

  Two constraints are parallel

  ঘ

  All of the above
• Which of the following statements is true with respect to the optimal solution of an LP problem?
  ক

  Every LP problem has an optimal solution

  খ

  Optimal solution of an LP problem always occurs at an extreme point

  গ

  At optimal solution all resources are completely used

  ঘ

  If an optimal solution exists, there will always be at least one at a corner
• Which of the following is a limitation associated with an LP model?
  ক

  The relationship among decision variables in linear

  খ

  No guarantee to get integer valued solutions

  গ

  No consideration of effect of time & uncertainty on LP model

  ঘ

  All of the above
• Which of the following is an assumption of an LP model?
  ক

  Divisibility

  খ

  Proportionality

  গ

  Additivity

  ঘ

  All of the above
• Which of the following is not a characteristic of the LP?
  ক

  Resources must be limited

  খ

  Only one objective function

  গ

  Parameters value remains constant during the planning period

  ঘ

  The problem must be of minimization type
• Which of the following is not a characteristic of the LP model?
  ক

  Alternative courses of action

  খ

  An objective function of maximization type

  গ

  Limited amount of resources

  ঘ

  Non-negativity condition on the value of decision variables.
• The operations Research technique which helps in minimizing total waiting and service costs is.
  ক

  Queuing Theory

  খ

  Decision Theory

  গ

  Both A and B

  ঘ

  None of the above
• Which technique is used in finding a solution for optimizing a given objective, such as profit maximization or cost minimization under certain constraints?
  ক

  Quailing Theory

  খ

  Waiting Line

  গ

  Both A and B

  ঘ

  Linear Programming
• What have been constructed for Operations Research problems and methods for solving the models that are available in many cases?
  ক

  Scientific Models

  খ

  Algorithms

  গ

  Mathematical Models

  ঘ

  None of the above
• The variables whose coefficient vectors are unit vectors are called ____________.
  ক

  Unit Variables

  খ

  Basic Variables

  গ

  Non basic Variables

  ঘ

  None of the above
• Graphic method can be applied to solve a LPP when there are only _____________ variable.
  ক

  One

  খ

  More than One

  গ

  Two

  ঘ

  Three
• An assignment problem is a special case of transportation problem, where.
  ক

  Number of rows equals number of columns

  খ

  All rim conditions are 1

  গ

  Values of each decision variable is either 0 or 1

  ঘ

  All of the above
• For a salesman who has to visit n cities which of the following are the ways of his tour plan.
  ক

  n!

  খ

  (n+1)!

  গ

  (n-1)!

  ঘ

  n
• Which of the following methods is used to verify the optimality of the current solution of the transportation problem?
  ক

  Least cost method

  খ

  Vogel’s approximation method

  গ

  Modified distribution method

  ঘ

  All of the above
• When total supply is equal to total demand in a transportation problem, the problem is said to be?
  ক

  Balanced

  খ

  Unbalanced

  গ

  Degenerate

  ঘ

  None of the above
• During an iteration while moving from one solution to the next, degeneracy may occur when.
  ক

  The closed path indicates a diagonal move

  খ

  Two or more occupied cells are on the closed path but neither of them represents a corner of the path.

  গ

  Two or more occupied cells on the closed path with minus sign are tied for lowest circled value

  ঘ

  Either of the above
• An alternative optimal solution to a minimization transportation problem exists whenever opportunity cost corresponding to unused route of transportation is:
  ক

  Positive & greater than zero

  খ

  Positive with at least one equal to zero

  গ

  Negative with at least one equal to zero

  ঘ

  None of the above
• The initial solution of a transportation problem can be obtained by applying any known method. However, the only condition is that.
  ক

  The solution be optimal

  খ

  The rim conditions are satisfied

  গ

  The solution not be degenerate

  ঘ

  All of the above
• In a manufacturing process, who takes the decisions as to what quantities and which process or processes are to be used so that the cost is minimum and profit is maximum?
  ক

  Supervisor

  খ

  Manufacturer

  গ

  Producer

  ঘ

  Production manager
• Operations Research study generally involves how many phases ?
  ক

  Three

  খ

  Four

  গ

  Five

  ঘ

  Two