1. The heat and mechanical energies are mutually convertible. This statement was established by
2. In an irreversible process, there is a
3. A triatomic molecule consists of __________ atoms.
4. An open cycle gas turbine works on
5. Which of the following has the highest calorific value?
6. A cycle consisting of __________ and two isothermal processes is known as Stirling cycle.
7. One Joule (J) is equal to
8. The amount of heat required to raise the temperature of unit mass of a gas through one degree at constant pressure is called specific heat at constant pressure.
9. The entropy is a point function and thus it is a property of the same.
10. The change of entropy, when heat is removed from the gas, is negative.
11. The ratio of molar specific heats for mono-atomic gas is
12. The value of cp/cv for air is
13. Mond gas is obtained by
14. When a gas is heated at constant volume
15. According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.
16. For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.
17. The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)
18. The general law of expansion or compression is pvn = C, The process is said to be hyperbolic, if n is equal to
19. In an isolated system, neither the heat and work nor the, mass of the working substance crosses the boundary of the system.
20. The area under the temperature-entropy curve (T-s curve) of any thermodynamic process represents the work-done during the process.
Thermodynamics MCQ 5
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