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DOWNLOAD MECHANICAL ENGINEERING NOTES

These are the hand written notes of made easy in very neat and clean hand writing. You can read it online or you can download and print it in hard copy for reading long hours. HArd copy of Notes are recommended by many coaching teachers. These notes are prepared by Mohit Chouksey. Download it and enjoy reading. Click on the Subject Names for Downloading it Contents Thermodynamics Power Plant Engineering Internal Combustion Engine Heat Transfer Fluid Mechanics Fluid Machinery Refrigeration and Air Conditioning Engineering Mechanics Strength of Material/Mechanics of Material Machine Design Theory of Machines Material Science Casting and Welding Machining ...
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Properties of Pure Substances, Gases and Gas Mixture

271. The equation which perfectly represents Gibbs Phase Rule for a process where the pressure is also a variable is expressed as : (a) F = P – C + 2 (b) F = C + P – 1 (c) F = P – C – 1 (d) F = C – P + 2 BHEL ET 2019 . (d) : Gibbs phase rule- P + F = C + 2 or F C P 2 = − + P = Number of phase C = Number of chemical components n = number of non-compositional variable (i.e. n=2) h = 2 i.e., pressure and temperature F = Degree of freedom Answer 272. Which relationship defines Gibbs free energy G: (a) G = H + TS (b) G = H - TS (c) G = U + TS (d) F = U + TS SJVN ET 2013 APPSC AEE 2016 . (b) : Gibbs free energy 'G' G H TS = − Answer 273. Joule-Thomson coefficient is defined as : (a) h T P   ∂     ∂ (b) T H P   ∂     ∂ (c) P H T   ∂     ∂ (d) h P T   ∂     ∂ MPPSC AE 2016 BPSC AE Mains 2017 Paper - V : (a) Joule thomson co-efficient:- ...

Basic Concepts & Zeroth Law of Thermodynamics 5

81. The density of water is maximum at   (a) 20 ºC             (b) 4 ºC  (c) 0 ºC               (d) -4 ºC  UPPSC AE 12.04.2016 Paper-II  Ans : (b) The maximum density of water occurs at 4  ºC because, at this temperature two opposing effects are in balance. In ice, the water molecules are in a crystal lattice that has a lot of empty space. When the ice melts to liquid water, the structure collapses and the density of the liquid increases. Thus, the density of water is a maximum at 4 ºC                                 82. A perfect gas at 27 °C is heated at constant pressure so as to triple its volume. The final temperature of the gas will be.  (a) 81 °C           ...