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THERMODYNAMICS QUESTION ANSWERS CLASS NOTES

THERMODYNAMICS QUESTION ANSWERS CLASS NOTES What is the Difference between a control volume and control surface? ANS: Fig. Control Volume & Control Surface Control volume is a 3 dimensional space in a thermodynamic system (say  a compressor or pump). There will be mass transfer, energy transfer and momentum transfer across the control volume. Select control…

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THERMODYNAMICS FLUIDS AND DEVICES CLASS NOTES

THERMODYNAMIC  FLUIDS  AND DEVICES CLASS NOTES    In thermodynamics, meaning of ‘thermo’ is heat energy. Dynamics means the motion of molecules or atoms. Thermodynamic fluids are heat with fluids in motion. Fluids are liquids, vapors & gases. Pressure, temperature, specific volume, density, internal energy & specific weight are important thermodynamic properties of fluids. Thermodynamic properties…

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THERMODYNAMIC PROCESSES MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

THERMODYNAMIC PROCESSES MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS  MCQ increases understanding and clarity. It helps in using the concepts in real life applications. 1. A vapor becomes a gas as long as degree of super heat is Firstly       < 200C Secondly  < 500C Thirdly      <400C None Ans: (iv) 2.  Which of…

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THERMODYNAMIC CYCLES CLASS NOTES FOR MECHANICAL ENGINEERING

THERMODYNAMIC CYCLES CLASS NOTES FOR MECHANICAL ENGINEERING A thermodynamic cycle consists of thermodynamic processes in series. As a result, system returns to its initial starting point. (a)    POWER CYCLES (HEAT ENGINE CYCLES) WITH EXTERNAL COMBUSTION Cycle  1-2 process (compression) Process 2—3 (heat addition)  3—4 process (Expansion) Process 4—1 (Heat rejection) Remarks CARNOT CYCLE ISENTROPIC ISOTHERMAL…