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Engineering Thermodynamics: Chapter:1 Basic Thermodynamic

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Published in: Mechanical
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Concept -1: Macroscopic v/s Microscopic Approaches

Rahul A / Bangalore

4 years of teaching experience

Qualification: B.Tech/B.E. (NIT Bhopal - 2010), M.Tech (IIT Bombay - 2016)

Teaches: Physics, Mechanical

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  1. Engineering Thermodynamics Chapter-I Introduction Concept -1 : Macroscopic VIS Microscopic Approaches Video link for detailed explanation: https://www.youtube.com/watch?v=P3_DRhzbx_8&t=13s By RAHUL AGRAWAL
  2. Macroscopic VIS Microscopic Approaches Macroscopic Approach: • In this approach a certain quantity of matter is considered without taking into account the events occurring at molecular level. The analysis of macroscopic system does not require knowledge of behaviour Individual particles. Macroscopic properties are effect of action of many particles or average value of large no of particles. This approach is followed in classical thermodynamics Example. Tyre pressure measured at station Microscopic Approach: Microscopic point of view system is made up of a very large number of discrete particles known as molecules and atoms. Microscopic approach require knowledge of behaviour Individual particles. Microscopic properties are effect of action of individual particle. This approach is followed in Statistical thermodynamics Example Properties of atoms
  3. o o o 1 o Microscopic World Mass Position Velocity Macroscopic World Pressure # moles Volume Temperature
  4. Which of the following aspect is not true regarding microscopic properties of thermodynamic system? (a) a knowledge of the structure of matter is essential, (b) a limited number of variables/properties are needed to describe the state of matter. (c) the values of these variables cannot be measured. (d) statistical averaging is adopted to predict the behaviour of individual fluid particles. Video link for detailed explanation: https://www.youtube.com/watch?v=P3_DRhzbx_8&t=13s

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