Q1Basic Mechanical Engineering
Question
2 marks
PART - A
Q.1 Define system and surroundings.
Answer
A thermodynamic system is a specifically defined quantity of matter or a designated region in physical space rigorously chosen for analytical study, while the surroundings completely encompass everything external to this defined system.
In macroscopic engineering thermodynamics, carefully establishing the strict boundaries of analysis is absolutely crucial.
- Thermodynamic System: This refers explicitly to a fixed macroscopic quantity of matter (like a specific mass of expanding gas) or a rigidly defined geometric region in physical space (like the internal volume of a compressor) that is systematically isolated for thermodynamic study.
- Surroundings: This strictly mathematically defines the absolute entire universe completely outside the defined physical boundaries of the chosen system.
- Boundary: The real or imaginary, fixed or continuously moving closed mathematical surface that rigorously separates the defined system completely from its surroundings.