The discussion centers on the nature of cyclic transformations in thermodynamics, specifically addressing the question of irreversibility. It is established that a cyclic transformation does not inherently imply irreversibility, as the process can be reversible depending on the work done on or by the surroundings. The TS (temperature-entropy) diagram does not provide sufficient information to conclude that the transformation is irreversible. A reversible process can indeed correspond to the same cycle under specific conditions.
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No it's not safe to say that. This TS diagram doesn't say anything about the amount of work that's being done on or by the surroundings, or how the process is carried out. I can easily visualize a reversible process corresponding to this cycle.Ahmed1029 said: