System Modelling and Simulation
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Questions and Answers

What is the primary benefit of system modeling and computer simulation?

  • To study the behavior of systems over a long period of time
  • To only study dynamic systems
  • To save money by experimenting with computers instead of real systems (correct)
  • To perform actual experiments with real systems

    • What is a system according to the broader definition?

  • Any object which has some action to perform and is dependent on number of objects called entities (correct)
  • Any object which is independent of other objects
  • An object with multiple actions to perform
  • An object with only one action to perform

    • What is an attribute of a student in a university system?

  • To join a club
  • To attend classes
  • To play sports
  • To study and work hard (correct)

    • What is the term for studying a system that changes with time?

    <p>System Analysis</p> Signup and view all the answers

    What is an example of a static system?

    <p>A clock</p> Signup and view all the answers

    What is the main purpose of system modeling and simulation?

    <p>To study the behavior of systems with the help of mathematical models and computers</p> Signup and view all the answers

    What is an entity in the context of a system?

    <p>An object of interest in a system</p> Signup and view all the answers

    What is an activity in the context of a system?

    <p>A function performed by an entity</p> Signup and view all the answers

    What is the state of a system?

    <p>A collection of variables necessary to describe the system</p> Signup and view all the answers

    What is an event in the context of a system?

    <p>An instantaneous occurrence that may change the state of the system</p> Signup and view all the answers

    What is an exogenous system?

    <p>A system affected by the environment</p> Signup and view all the answers

    What is the study of a system called?

    <p>System Analysis</p> Signup and view all the answers

    What makes it difficult to predict the result of operations on a system?

    <p>The random number used in the operation</p> Signup and view all the answers

    What is a major drawback of the simulation process?

    <p>It requires a lot of manpower</p> Signup and view all the answers

    Which of the following is an application area of Modelling & Simulation?

    <p>E-business models</p> Signup and view all the answers

    What is a use of Modelling & Simulation in system design?

    <p>To test new designs and policies</p> Signup and view all the answers

    What is the primary characteristic of deterministic studies?

    <p>Results are known exactly</p> Signup and view all the answers

    Which of the following systems is an example of a continuous system?

    <p>Fluid flow in a pipe</p> Signup and view all the answers

    In which field can Modelling & Simulation be used to study the internal structure of a complex system?

    <p>Biology</p> Signup and view all the answers

    What is the second step in performing simulation analysis?

    <p>Choose input variables and create entities for the simulation process</p> Signup and view all the answers

    What is the purpose of step 5 in simulation analysis?

    <p>To collect data from the real-life system</p> Signup and view all the answers

    What is the primary difference between a continuous and discrete system?

    <p>The presence or absence of continuous changes</p> Signup and view all the answers

    What is the final step in performing simulation analysis?

    <p>Choose an appropriate simulation software to run the model</p> Signup and view all the answers

    What is the purpose of Step 8 in the Modelling and Simulation process?

    <p>To verify the simulation model by comparing its result with the real-time</p> Signup and view all the answers

    What is an advantage of using Modelling and Simulation in systems analysis?

    <p>It allows to understand how the system really operates without working on real-time systems</p> Signup and view all the answers

    What is the primary reason why designing a model is challenging?

    <p>It requires domain knowledge, training, and experience</p> Signup and view all the answers

    What is the benefit of using Modelling and Simulation in identifying constraints in a system?

    <p>It allows to perform analysis that causes delay in the work process, information, etc.</p> Signup and view all the answers

    What is the purpose of Step 9 in the Modelling and Simulation process?

    <p>To perform an experiment on the model by changing the variable values</p> Signup and view all the answers

    What is a disadvantage of using Modelling and Simulation in systems analysis?

    <p>Designing a model is an art which requires domain knowledge, training, and experience</p> Signup and view all the answers

    Study Notes

    Modelling and Simulation

    • Modelling and simulation involve creating a model of a system and experimenting with it to understand its behavior
    • It allows for easy understanding, testing, and upgrading of systems without affecting the real system
    • Modelling and simulation can be used to identify constraints, diagnose problems, and explore new policies and procedures

    Advantages of Modelling and Simulation

    • Easy to understand: allows understanding of how the system operates without working on real-time systems
    • Easy to test: allows making changes to the system and seeing their effect on the output without working on real-time systems
    • Easy to upgrade: determines system requirements by applying different configurations
    • Easy to identify constraints: performs analysis that causes delay in the work process
    • Easy to diagnose problems: understands all interactions and analyzes their effect

    Disadvantages of Modelling and Simulation

    • Designing a model requires domain knowledge, training, and experience
    • Simulation results can be difficult to translate and require experts to understand
    • Simulation process is expensive and time-consuming

    System Modelling

    • System modeling and computer simulation are used to study systems with the help of mathematical models and computers
    • It saves money and time by not performing actual experiments on the real system

    What is a System?

    • A system is an object that has some action to perform and is dependent on a number of objects called entities
    • Example: a classroom, a college, or a university is a system
    • Each entity has its own attributes or properties

    Types of Systems

    • Systems can be divided into two types: static systems and dynamic systems
    • Static systems do not change with time, while dynamic systems change with time

    State of a System

    • The state is defined as a collection of variables necessary to describe the system at any time, relative to the objectives of the study
    • An event is an instantaneous occurrence that may change the state of the system

    Types of Environment

    • Exogenous systems are affected by the environment
    • Endogenous systems are not affected by the environment
    • Examples: economic model of a country (exogenous), aircraft flight (exogenous), and a classroom without students (endogenous)

    Application Areas of Modelling and Simulation

    • Modelling and simulation can be applied to military applications, training and support, designing semiconductors, telecommunications, civil engineering designs, and e-business models
    • It can also be used to study biological systems, optimize system design, test new designs and policies, and verify analytic solutions

    Scientific Techniques

    • Deterministic studies involve techniques where results are known exactly
    • Probabilistic studies involve techniques where results are not known exactly
    • Examples of deterministic systems: fluid flow in a pipe, motion of an aircraft or trajectory of a projectile
    • Examples of probabilistic systems: factory production and marketing in lots

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    Description

    Learn about system modeling and computer simulation, a crucial tool in the industry and defense. Understand how it helps engineers and scientists study systems using mathematical models and computers, saving time and money.

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