Practice Operations Research Multiple Choice Questions Quiz-1 - MCQGeeks.com

Q.1

Alternative solutions exist of an LP model when.

One of the constraints is redundant
Objective function equation is parallel to one of the constraints
Two constraints are parallel
All of the above

Q.2

While solving a LP problem, infeasibility may be removed by?

Adding another constraint
Adding another variable
Removing a constraint
Removing a variable

Q.3

If a non-redundant constraint is removed from an LP problem then.

Feasible region will become larger
Feasible region will become smaller
Solution will become infeasible
None of the above

Q.4

If one of the constraint of an equation in an LP problem has an unbounded solution, then.

Solution to such LP problem must be degenerate
Feasible region should have a line segment
Alternative solutions exist
None of the above

Q.5

Customer behavior in which the customer moves from one queue to another in a multiple channel situation is.

Balking
Reneging
Jockeying
Altering

Q.6

A calling population is considered to be infinite when.

All customers arrive at once
Arrivals are independent of each other
Arrivals are dependent upon each other
All of the above

Q.7

The cost of providing service in a queuing system decreases with.

Decreased average waiting time in the queue
Decreased arrival rate
Increased arrival rate
None of the above

Q.8

Service mechanism in a queuing system is characterized by.

Server’s behavior
Customer’s behavior
Customers in the system
All of the above

Q.9

Probabilities of occurrence of any state are.

Collectively exhaustive
Mutually exclusive
Representing one of the finite numbers of states of nature in the system
All of the above

Q.10

In a matrix of transition probability, the probability values should add up to one in each.

Row
Column
Diagonal
All of the above

Q.11

Which of the following characteristics apply to queuing system?

Customer population
Arrival process
Both a & b
Neither a nor b

Q.12

Which of the following is not a key operating characteristics apply to queuing system?

Utilization factor
Percent idle time
Average time spent waiting in the system & queue
None of the above

Q.13

Priority queue discipline may be classified as.

Finite or infinite
Limited & unlimited
Pre-emptive or non-pre-emptive
All of the above

Q.14

The calling population is assumed to be infinite when.

Arrivals are independent of each other
Capacity of the system is infinite
Service rate is faster than arrival rate
All of the above

Q.15

Which of the cost estimates & performance measures are not used for economic analysis of a queuing system?

Cost per server per unit of time
Cost per unit of time for a customer waiting in the system
Average number of customers in the system
Average waiting time of customers in the system

Q.16

Simulation is defined as.

A technique that uses computers
An approach for reproducing the processes by which events by chance & changes are created in a computer
A procedure for testing & experimenting on models to answer what if ___, then so & so ___ types of questions
All of the above

Q.17

Biased random sampling is made from among alternatives which have.

Equal probability
Unequal probability
Probability which do not sum to 1
None of the above

Q.18

The general purpose system simulation language.

Requires programme writing
Does not require programme writing
Requires predefined coding forms
Needs a set of equations to describe a system

Q.19

Which of the following is not one of the assumptions of Markov analysis:

There are a limited number of possible states
A future state can be predicted from the preceding one
There are limited number of future periods
All of the above

Q.20

An advantage of simulation as opposed to optimization is that.

Several options of measure of performance can be examined
Complex real-life problems can be studied
It is applicable in cases where there is an element of randomness in a system
All of the above

Q.21

While calculating equilibrium probabilities for a Markov process, it is assumed that?

There is a single absorbing state
Transition probabilities do not change
There is a single non-absorbing state
None of the above

Q.22

The first-order Markov chain is generally used when.

Transition probabilities are fairly stable
Change in transition probabilities is random
No sufficient data are available
All of the above

Q.23

Special simulation languages are useful because they.

Reduce programme preparation time & cost
Have the capability to generate random variables
Require no prior programming knowledge
All of the above

Q.24

Few causes of simulation analysis failure are.

Inadequate level of user participation
Inappropriate levels of detail
Incomplete mix of essential skills
All of the above

Q.25

The purpose of using simulation technique is to.

Imitate a real-world situation
Understand properties & operating characteristics of complex real-life problems
Reduce the cost of experiment on a model of real situation
All of the above

Q.26

Large complicated simulation models are appreciated because.

Their average costs are not well-defined
It is difficult to create the appropriate events
It is difficult to create the appropriate events
All of the above

Q.27

Which of the following is not the special purpose simulation language?

BASIC
GPSS
GASP
SIMSCRIPT

Q.28

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

Gain
Loss
Retention
None of the above

Q.29

The important step required for simulation approach in solving a problem is to.

Test & validate the model
Design the experiment
Conduct the experiment
All of the above

Q.30

A problem is classified as Markov chain provided.

There are finite number of possible states
States are collectively exhaustive & mutually exclusive
Long-run probabilities of being in a particular state will be constant over time
All of the above

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