Last updated: October 2, 2020
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1. Otto cycle consists of
2. The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)
3. The increase in entropy of a system represents
4. The work ratio of simple gas turbine cycle depends upon
5. In a free expansion process,
6. One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.
7. A perpetual motion machine of the first kind is __________ according to first law of thermodynamics.
8. The efficiency of a gas turbine is given by
9. One m3 of methane (CH4) requires 2m3 of oxygen and produces 1m3 of carbon dioxide and 2m3 of water or steam.
10. The smallest quantity of a substance, which can exist by itself in a chemically recognisable form is known as
11. An open system is one in which
12. The efficiency of Otto cycle depends upon the specific heats of the working substance.
13. A process, in which the gas is heated or expanded in such a way that product of its pressure and volume remains constant, is called isothermal process.
14. In closed cycle gas turbine, the air is compressed
15. The standard value of atmospheric pressure taken at sea level is
16. The unit of energy is S. I. units system is
17. Which of the following statement is correct?
18. A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called
19. High air-fuel ratio in gas turbines
20. If in the equation pvn = C, the value of n = ∝ , then the process is called
Thermodynamics MCQ 9
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