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Thermodynamics: Thermodynamic Relations
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Thermodynamics: Thermodynamic Relations
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25 Questions

1. The rotary positive displacement machines are ____ and compression is ____
2. In isothermal compression, all work done on gas is transformed into
3. The adiabatic efficiency of real compressor can be ____
4. Availability is a composite property.
5. A steady stream of R-22 at ambient temperature of 10°C, and at 750 kPa enters a solar collector. The stream exits at 80°C, 700 kPa. Calculate the change in availability.
6. The lowest practicable temperature of heat rejected is the
7. In displacement compressor, compression occurs by
8. Cold water is running in a river at 2°C and the air temperature is 20°C. What is the availability of water relative to the ambient temperature?
9. When the clearance volume is at minimum level,
10. Whenever heat is transferred through a finite temperature difference, there is always a decrease in the availability of energy so transferred.
11. In steady-flow compressor, compression occurs by
12. Rotary compressors are used where ____ quantities of gas are needed at relatively ____ pressure.
13. Work done in all reversible processes is equal.
14. The available energy is known as ____ and the unavailable energy is known as ____
15. The temperature at which a liquid boils is very sensitive to pressure but the temperature at which a solid melts is not such a strong function of pressure.
16. The availability(A) of a given system is defined as the ____ work that is obtainable in a process in which system comes to equilibrium with its surroundings.
17. Which of the following is true?
18. Which of the following curves meet at triple point?
19. The temperature and pressure conditions at free air delivery are
20. Which of the following statement is true about a chart of thermodynamic property?
21. The clearance volumetric efficiency is equal to
22. For an adiabatic machine, work of compression is greater than enthalpy rise of gas.
23. The volumetric efficiency ____ when carried out in stages.
24. Which of the following is correct?
25. The volumetric efficiency is defined as the ratio of

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