11. |
The work done by a closed system in a reversible process is always ___ that done in an irreversible process.
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Answer:
Option (d) |
12. |
The efficiency of a Carnot engine is given as 0.75. If the cycle direction is reversed, what will be the value of COP of reversed Carnot cycle
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Answer:
Option (c) |
13. |
Kelvin-Planck's law deals with
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Answer:
Option (c) |
14. |
According to Kelvin-Planck's statement a perpeual motion machine of the ____________is impossible.
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Answer:
Option (b) |
15. |
Which of the following is the correct statement of the second law of thermodynamics?
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Answer:
Option (d) |
16. |
The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by
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Answer:
Option (c) |
17. |
In an irreversible process, there is a
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Answer:
Option (a) |
18. |
The main cause for the irreversibility is
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Answer:
Option (d) |
19. |
The condition for the reversibility of a cycle is
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Answer:
Option (d) |
20. |
Which is incorrect statement about the reversible process?
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Answer:
Option (d) |