1. Enthalpy of an ideal gas is a function only of _______. 2. Which of the following is the most efficient thermodynamic cycle? 3. What is the first law of thermodynamics? 4. An id... 1. Enthalpy of an ideal gas is a function only of _______. 2. Which of the following is the most efficient thermodynamic cycle? 3. What is the first law of thermodynamics? 4. An ideal gas is compressed isothermally. What is the enthalpy change? 5. Name the process that has no heat transfer. 6. An ideal gas is compressed in a cylinder so well insulated that there is essentially no heat transfer. The temperature of the gas. 7. What is the SI unit of pressure? 8. The equation Cp = Cv + R applies to which of the following? 9. In the flow process, neglecting kinetic and potential energies, the integral of Vdp represents what? 10. Mechanical energy of pressure transformed into energy of heat. 11. The theory of changing heat into mechanical work. 12. Average pressure on a surface when a changing pressure condition exists. 13. Which of the following cycles consists of two isothermal and two constant volume processes? 14. A control volume refers to what? 15. In the polytropic process, PVn = constant, if the value of n is infinitely large, the process is. 16. If the temperature is held constant and the pressure is increased beyond the saturation pressure, then the working medium must be: 17. Is one whose temperature is below the saturation temperature corresponding to its pressure. 18. Number of molecules in a mole of any substance is a constant called ______. 19. If the pressure of a gas is constant the volume directly proportional to the absolute temperature. 20. The number of protons in the nucleus of an atom or the number of electrons in the orbit of an atom. 21. In a P-T diagram of a pure substance, the curve separating the solid phase from the liquid phase is: 22. A water temperature of 18 °F in the water cooled condenser is equivalent in °C to _______. 23. The latent heat of vaporization in Joules per kg is equal to _______. 24. Form of energy associated with the kinetic energy of the random motion of large number of molecules. 25. If the temperature is held constant and the pressure is increased beyond the saturation pressure, then, the working medium must be: 26. Is the condition of pressure and temperature at which a liquid and its vapor are indistinguishable. 27. When a substance in the gaseous state is below the critical temperature, it is called. 28. Superheated vapor behaves. Read more